1.
Nautical mile
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A nautical mile is a unit of measurement defined as exactly 1852 meters. Historically, it was defined as one minute of latitude, which is equivalent to one sixtieth of a degree of latitude. Today it is an SI derived unit, being rounded to a number of meters. The derived unit of speed is the knot, defined as one mile per hour. The geographical mile is the length of one minute of longitude along the Equator, there is no internationally agreed symbol. M is used as the abbreviation for the mile by the International Hydrographic Organization and by the International Bureau of Weights. NM is used by the International Civil Aviation Organization, nm is used by the U. S. National Oceanic and Atmospheric Administration. Nmi is used by the Institute of Electrical and Electronics Engineers, the word mile is from the Latin word for a thousand paces, mīlia. In 1617 the Dutch scientist Snell assessed the circumference of the Earth at 24,630 Roman miles, around that time British mathematician Edmund Gunter improved navigational tools including a new quadrant to determine latitude at sea. He reasoned that the lines of latitude could be used as the basis for a unit of measurement for distance, as one degree is 1/360 of a circle, one minute of arc is 1/21600 of a circle. These sexagesimal units originated in Babylonian astronomy, Gunter used Snells circumference to define a nautical mile as 6,080 feet, the length of one minute of arc at 48 degrees latitude.3 metres. Other countries measure the minute of arc at 45 degrees latitude, in 1929, the international nautical mile was defined by the First International Extraordinary Hydrographic Conference in Monaco as 1,852 meters. Imperial units and United States customary units used a definition of the nautical mile based on the Clarke Spheroid, the United States nautical mile was defined as 6,080.20 feet based in the Mendenhall Order foot of 1893. It was abandoned in favour of the nautical mile in 1954.181 meters. It was abandoned in 1970 and, legally, references to the unit are now converted to 1,853 meters. Conversion of units Orders of magnitude
2.
Shkhara
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Shkhara, is the highest point in the nation of Georgia. Located in the Svaneti region along the Russian frontier, Shkhara lies 88 kilometres north of the city of Kutaisi, the summit lies in the central part of the Greater Caucasus Mountain Range, to the south-east of Mount Elbrus, Europes highest mountain. Shkhara is the third highest peak in the Caucasus, just behind Dykh-Tau, Shkhara is the high point and the eastern anchor of a massif known as the Bezingi Wall, a 12 kilometres long ridge. It is a large, steep peak in a glaciated region. Its north face is 1,500 metres high and contains several classic difficult routes, the peak was first climbed in 1888 via the North East Ridge route, by the British/Swiss team of U. Almer, J. Cockin and C. Roth and this route is still one of the easier and more popular routes on the mountain. The first complete traverse of the Bezingi Wall was in 1931, by the Austrians K. Poppinger, K. Moldan, and S. Schintlmeister
3.
Bog
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A bog is a wetland that accumulates peat, a deposit of dead plant material—often mosses, and in a majority of cases, sphagnum moss. It is one of the four types of wetlands. Other names for bogs include mire, quagmire, and muskeg and they are frequently covered in ericaceous shrubs rooted in the sphagnum moss and peat. The gradual accumulation of decayed plant material in a bog functions as a carbon sink, Bogs occur where the water at the ground surface is acidic and low in nutrients. In some cases, the water is derived entirely from precipitation, water flowing out of bogs has a characteristic brown colour, which comes from dissolved peat tannins. In general, the low fertility and cool climate results in relatively slow plant growth, large areas of landscape can be covered many metres deep in peat. Bogs have distinctive assemblages of animal, fungal and plant species, Bogs are widely distributed in cold, temperate climes, mostly in boreal ecosystems in the Northern Hemisphere. The worlds largest wetland is the bogs of the Western Siberian Lowlands in Russia. Large peat bogs also occur in North America, particularly the Hudson Bay Lowland and they are less common in the Southern Hemisphere, with the largest being the Magellanic moorland, comprising some 44,000 square kilometres. Sphagnum bogs were widespread in northern Europe but have often been cleared and drained for agriculture, a 2014 expedition leaving from Itanga village, Republic of the Congo discovered a peat bog as big as England which stretches into neighboring Democratic Republic of Congo. There are many highly specialised animals, fungi and plants associated with bog habitat, most are capable of tolerating the combination of low nutrient levels and waterlogging. Sphagnum moss is generally abundant, along with ericaceous shrubs, the shrubs are often evergreen, which is understood to assist in conservation of nutrients. In drier locations, evergreen trees can occur, in case the bog blends into the surrounding expanses of boreal evergreen forest. Sedges are one of the more common herbaceous species, carnivorous plants such as sundews and pitcher plants have adapted to the low-nutrient conditions by using invertebrates as a nutrient source. Orchids have adapted to these conditions through the use of fungi to extract nutrients. Some shrubs such as Myrica gale have root nodules in which nitrogen fixation occurs, Bogs are recognized as a significant/specific habitat type by a number of governmental and conservation agencies. They can provide habitat for mammals, such as caribou, moose, the United Kingdom in its Biodiversity Action Plan establishes bog habitats as a priority for conservation. Russia has a reserve system in the West Siberian Lowland
4.
Poti
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Poti is a port city in Georgia, located on the eastern Black Sea coast in the region of Samegrelo-Zemo Svaneti in the west of the country. Built near the site of the ancient Greek colony of Phasis and deriving its name from the same and it is also home to a main naval base and the headquarters of the Georgian navy. Adjacent to the Poti port area is the RAKIA owned Free Industrial Zone, inaugurated in April 2008, it has registered a number of businesses, including those from Iranian businesspeople trying to evade sanctions against Iran. The name Poti is apparently linked to Phasis, but the etymology is a matter of a scholarly dispute, Phasis is first recorded in Hesiods Theogony as a name of the river, not a town. The recorded history of Poti and its environs spans over 26 centuries, after many years of uncertainty and academic debate, the site of this settlement now seems to be established, thanks to underwater archaeology under tough conditions. Apparently the lake which the well-informed Ancient Greek author Strabo reported as bounding one side of Phasis has now engulfed it, Phasis appears to have been an important center of trade and culture in Colchis throughout the Classical period. The section along the river Phasis was a component of the presumed trade route from India to the Black Sea, attested by Strabo. Between the 6th and 2nd centuries BC, the played a active role in these contacts. During the Third Mithridatic War, Phasis came under Roman control and it was where the Roman commander-in-chief Pompey, having crossed into Colchis from Iberia, met the legate Servilius, the admiral of his Euxine fleet in 65 BC. After the introduction of Christianity, Phasis was a seat of a Greek diocese, one of whose bishops, Cyrus, during the Lazic War between the Eastern Roman and Sassanid Iranian empires Phasis was attacked, unsuccessfully, by Iranian soldiers. In the 8th century, the name Poti entered Georgian written sources and it remained a place of maritime trade within the Kingdom of Georgia and was known to medieval European travelers as Fasso. In the 14th century, the Genoese established a trading factory, in 1578, Poti was conquered by the Ottoman Empire. The Turks, who knew the town as Faş, heavily fortified it, a combined army of the western Georgian princes recovered Poti in 1640, but the town fell under the Ottoman sway again in 1723. Another futile attempt to dispossess the Ottomans of Poti was made by Russo-Georgian forces in 1770 and 1771, the next Russo-Turkish War resulted in the capture of Poti by Russia in 1828. The town was subordinated to the Governorate of Kutais and granted the status of a town in 1858. The seaport was reconstructed between 1863 and 1905, in 1872, the town became the terminus of the Caucasian railway, whence the line led direct to Tiflis. Poti particularly grew in size and importance during the mayorship of Niko Nikoladze between 1894 and 1912, by 1900, Poti had become one of the major ports on the Black Sea, exporting most of Georgia’s manganese and coal. During the First Russian Revolution, Poti became a scene of workers strikes, during a brief period of independence in 1918–1921 Poti was Georgia’s principal window to Europe, also serving as the portal of entry for successive German and British expeditionary forces
5.
Alazani
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The Alazani is a river that flows through the Caucasus. It is the tributary of the Kura in eastern Georgia. Part of its path forms the border between Georgia and Azerbaijan, before it meets the Kura at the Mingəçevir Reservoir, the Alazani originates in the Greater Caucasus, south of the main ridge, in the northwestern part of the Akhmeta District. It flows initially to the south towards the town Akhmeta, then through the fruitful Alazani Valley of Kakheti towards the southeast, the Alazani is the center of the Georgian wine industry. For centuries, it was a gateway for Persian invaders. The Alazani dries up during the winter, but in the spring, snow melt from the mountains swells the river enormously. The river is used for irrigation and for drinking water. In the 1990s, Chinese investors built many small power plants. The river is popular with tourists for rafting trips. A light pollution of the river with biological substances comes from untreated sewage from the cities and other communities, in the districts of Kvareli and Lagodekhi, water quality is said to be quite bad. Alazani serves also as the name of different Georgian wines, among them the semi-dry brands of Marani Alazani Valley, the information in this article is a based on and/or translated from that in its German equivalent
6.
Paravani Lake
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Paravani lake is a volcanic lake in Georgia, located in Javakheti Plateau between Abul-Samsari and Javakheti Ranges. Paravani Lake is located 2,073 m above sea level and has an area of 37.5 km2. Its maximum and average depths are 3.3 m and 2.2 m respectively, the volume of the lake is 91,000,000 m3. The water level is low during October and November and is high during May, the lake is frozen during wintertime and the thickness of the ice ranges from 47 to 73 cm. In addition to the rivers of Shaori, Sabadostskali, and Rodionovskis Tskali, the lake gets its water from snow, rain. The Paravani River begins from the part of the lake. The lake is a destination for fishing. Paravani lake location on the map
7.
Temperate climate
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In geography, temperate or tepid latitudes of Earth lie between the tropics and the polar regions. The temperatures in these regions are relatively moderate, rather than extremely hot or cold. The north temperate zone extends from the Tropic of Cancer to the Arctic Circle, the south temperate zone extends from the Tropic of Capricorn to the Antarctic Circle. In some climate classifications, the zone is often divided into several smaller climate zones. These include Humid subtropical climate, Mediterranean climate, oceanic, subtropical climates are located between 23. 5° and 35. 0° north or south latitude on the eastern or leeward sides of landmasses. This climate has long, generally hot, summers and short, mild winters and these climates may occur in southern Asia, the southeastern United States, parts of eastern Australia, and in eastern coastal South America. Mediterranean climates, occur between 30° and 42° north and south latitude, on the sides of landmasses. This climate has hot summers and short mild winters, however, seasonal rainfall is the opposite of that of the subtropical humid type. These climates occur near the rimlands of the Mediterranean Sea, in western Australia, in California, the oceanic climates occur in the higher middle latitudes, between 45° and 60° north and south latitude. They are created by the flow from the cool high latitude oceans to their west. This causes the climate to have cool summers and cool winters, annual rainfall is spread throughout the entire year. Regions with this climate include Western Europe, northwestern North America, the Continental climates occur in middle latitudes, between 35° or 40° to 55°. These climates are normally inland or on sides of landmasses. They feature warm to hot summers and cold winters, with a large temperature variation. Regions with this climate include northern temperate Asia, the northern United States, southern Canada, the vast majority of the worlds human population resides in temperate zones, especially in the northern hemisphere, due to its greater mass of land. The richest temperate flora in the world is found in southern Africa, geographical zone Habitat Köppen climate classification Middle latitudes Polar circle Subtropics
8.
Subtropics
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The subtropics are geographic and climate zones located roughly between the tropic circle of latitude at 23.5 latitude and temperate latitudes. Subtropical climates are characterized by warm to hot summers and cool to mild winters with infrequent frost. Subtropical climates can occur at elevations within the tropics, such as in the southern end of the Mexican Plateau and in Vietnam. Six climate classifications use the term to define the various temperature. A great portion of the deserts are located within the subtropics. Within savanna regimes in the subtropics, a wet season is seen annually during the summer, within Mediterranean climate regimes, the wet season occurs during the winter. Areas bordering warm oceans are prone to heavy rainfall from tropical cyclones. Plants such as palms, citrus, mango, lychee, the tropics have been historically defined as lying between the Tropic of Cancer and Tropic of Capricorn, located at 23. 45° north and south latitude respectively. The poleward fringe of the subtropics is located at approximately 40° north and south latitude respectively, northern fringes of the type can go further north due to moderating effects of ocean streams, like in parts of Southern Europe due to heat transported by the Gulf Stream. Several methods have used to define the subtropical climate. In the Trewartha climate classification, a subtropical region should have at least eight months with a temperature greater than 10 °C. According to the Troll-Paffen climate classification, there exists one large subtropical zone named the warm-temperate subtropical zone. According to the E. Neef climate classification, the zone is divided into two parts, Rainy winters of the west sides and Eastern subtropical climate. According to the Wilhelm Lauer & Peter Frankenberg climate classification, the zone is divided into three parts, high-continental, continental, and maritime. According to the Siegmund/Frankenberg climate classification, subtropical is one of six zones in the world. Heating of the earth near the equator leads to large amounts of upward motion and convection along the trough or Intertropical convergence zone. The upper-level divergence over the near-equatorial trough leads to air rising and moving away from the equator aloft, as the air moves towards the Mid-Latitudes, it cools and sinks, which leads to subsidence near the 30th parallel of both hemispheres. This circulation is known as the Hadley cell and leads to the formation of the subtropical ridge, many of the worlds deserts are caused by these climatological high-pressure areas, located within the subtropics
9.
Mediterranean Sea
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The sea is sometimes considered a part of the Atlantic Ocean, although it is usually identified as a separate body of water. The name Mediterranean is derived from the Latin mediterraneus, meaning inland or in the middle of land and it covers an approximate area of 2.5 million km2, but its connection to the Atlantic is only 14 km wide. The Strait of Gibraltar is a strait that connects the Atlantic Ocean to the Mediterranean Sea and separates Gibraltar. In oceanography, it is called the Eurafrican Mediterranean Sea or the European Mediterranean Sea to distinguish it from mediterranean seas elsewhere. The Mediterranean Sea has a depth of 1,500 m. The sea is bordered on the north by Europe, the east by Asia and it is located between latitudes 30° and 46° N and longitudes 6° W and 36° E. Its west-east length, from the Strait of Gibraltar to the Gulf of Iskenderun, the seas average north-south length, from Croatia’s southern shore to Libya, is approximately 800 km. The Mediterranean Sea, including the Sea of Marmara, has an area of approximately 2,510,000 square km. The sea was an important route for merchants and travelers of ancient times that allowed for trade, the history of the Mediterranean region is crucial to understanding the origins and development of many modern societies. In addition, the Gaza Strip and the British Overseas Territories of Gibraltar and Akrotiri, the term Mediterranean derives from the Latin word mediterraneus, meaning amid the earth or between land, as it is between the continents of Africa, Asia and Europe. The Ancient Greek name Mesogeios, is similarly from μέσο, between + γη, land, earth) and it can be compared with the Ancient Greek name Mesopotamia, meaning between rivers. The Mediterranean Sea has historically had several names, for example, the Carthaginians called it the Syrian Sea and latter Romans commonly called it Mare Nostrum, and occasionally Mare Internum. Another name was the Sea of the Philistines, from the people inhabiting a large portion of its shores near the Israelites, the sea is also called the Great Sea in the General Prologue by Geoffrey Chaucer. In Ottoman Turkish, it has also been called Bahr-i Sefid, in Modern Hebrew, it has been called HaYam HaTikhon, the Middle Sea, reflecting the Seas name in ancient Greek, Latin, and modern languages in both Europe and the Middle East. Similarly, in Modern Arabic, it is known as al-Baḥr al-Mutawassiṭ, in Turkish, it is known as Akdeniz, the White Sea since among Turks the white colour represents the west. Several ancient civilisations were located around the Mediterranean shores, and were influenced by their proximity to the sea. It provided routes for trade, colonisation, and war, as well as food for numerous communities throughout the ages, due to the shared climate, geology, and access to the sea, cultures centered on the Mediterranean tended to have some extent of intertwined culture and history. Two of the most notable Mediterranean civilisations in classical antiquity were the Greek city states, later, when Augustus founded the Roman Empire, the Romans referred to the Mediterranean as Mare Nostrum
10.
Plain
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In geography, a plain is a flat, sweeping landmass that generally does not change much in elevation. Plains occur as lowlands along the bottoms of valleys or on the doorsteps of mountains, as coastal plains, and as plateaus or uplands. In a valley, a plain is enclosed on two sides but in other cases a plain may be delineated by a complete or partial ring of hills, where a geological region contains more than one plain, they may be connected by a pass. Coastal plains would mostly rise from sea level until they run into elevated features such as mountains or plateaus, plains are one of the major landforms on earth, where they are present on all continents, and would cover more than one-third of the world’s land area. Plains may have formed from flowing lava, deposited by water, ice, wind, or formed by erosion by these agents from hills. Plains would generally be under the grassland, steppe, savannah or tundra biomes, in a few instances, deserts and rainforests can also be plains. Structural plains are relatively undisturbed horizontal surfaces of the Earth and they are structurally depressed areas of the world that make up some of the most extensive natural lowlands on the Earths surface. Erosional plains have been leveled by various agents of such as running water, rivers, wind and glacier which wear out the rugged surface. Plain resulting from the action of these agents of denudation are called peneplains while plains formed from wind action are called pediplains, depositional plains formed by the deposition of materials brought by various agents of transportation such as rivers, wind, waves, and glaciers. Their fertility and economic relevance depend greatly on the types of sediments that are laid down, flood plain, adjacent to a stream, river, lake or wetland that experiences occasional or periodic flooding. Scroll plain, a plain through which a river meanders with a low gradient. Lacustrine plain, a plain that originally formed in a lacustrine environment, lava plain, formed by sheets of flowing lava. Glacial plains, formed by the movement of glaciers under the force of gravity, Sandur, sandar consist mainly of stratified gravel and sand. Till plain, a plain of glacial till that forms when a sheet of ice becomes detached from the body of a glacier. Till plains are composed of unsorted material of all sizes, abyssal plain, a flat or very gently sloping area of the deep ocean basin. Planitia, the Latin word for plain, is used in the naming of plains on extraterrestrial objects, such as Hellas Planitia on Mars or Sedna Planitia on Venus
11.
Mountain
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A mountain is a large landform that stretches above the surrounding land in a limited area, usually in the form of a peak. A mountain is steeper than a hill. Mountains are formed through tectonic forces or volcanism and these forces can locally raise the surface of the earth. Mountains erode slowly through the action of rivers, weather conditions, a few mountains are isolated summits, but most occur in huge mountain ranges. High elevations on mountains produce colder climates than at sea level and these colder climates strongly affect the ecosystems of mountains, different elevations have different plants and animals. Because of the less hospitable terrain and climate, mountains tend to be used less for agriculture and more for resource extraction and recreation, the highest mountain on Earth is Mount Everest in the Himalayas of Asia, whose summit is 8,850 m above mean sea level. The highest known mountain on any planet in the Solar System is Olympus Mons on Mars at 21,171 m, there is no universally accepted definition of a mountain. Elevation, volume, relief, steepness, spacing and continuity have been used as criteria for defining a mountain, whether a landform is called a mountain may depend on local usage. The highest point in San Francisco, California, is called Mount Davidson, notwithstanding its height of 300 m, similarly, Mount Scott outside Lawton, Oklahoma is only 251 m from its base to its highest point. Whittows Dictionary of Physical Geography states Some authorities regard eminences above 600 metres as mountains, in addition, some definitions also include a topographical prominence requirement, typically 100 or 500 feet. For a while, the US defined a mountain as being 1,000 feet or taller, any similar landform lower than this height was considered a hill. However, today, the United States Geological Survey concludes that these terms do not have technical definitions in the US, using these definitions, mountains cover 33% of Eurasia, 19% of South America, 24% of North America, and 14% of Africa. As a whole, 24% of the Earths land mass is mountainous, there are three main types of mountains, volcanic, fold, and block. All three types are formed from plate tectonics, when portions of the Earths crust move, crumple, compressional forces, isostatic uplift and intrusion of igneous matter forces surface rock upward, creating a landform higher than the surrounding features. The height of the feature makes it either a hill or, if higher and steeper, major mountains tend to occur in long linear arcs, indicating tectonic plate boundaries and activity. Volcanoes are formed when a plate is pushed below another plate, at a depth of around 100 km, melting occurs in rock above the slab, and forms magma that reaches the surface. When the magma reaches the surface, it builds a volcanic mountain. Examples of volcanoes include Mount Fuji in Japan and Mount Pinatubo in the Philippines, the magma does not have to reach the surface in order to create a mountain, magma that solidifies below ground can still form dome mountains, such as Navajo Mountain in the US
12.
Valley
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A valley is a low area between hills, often with a river running through it. In geology, a valley or dale is a depression that is longer than it is wide, the terms U-shaped and V-shaped are descriptive terms of geography to characterize the form of valleys. Most valleys belong to one of two main types or a mixture of them, with respect to the cross section of the slopes or hillsides. A valley in its broadest geographic sense is known as a dale. A valley through which a river runs may also be referred to as a vale, a small, secluded, and often wooded valley is known as a dell or in Scotland as a glen. A wide, flat valley through which a river runs is known in Scotland as a strath, a mountain cove is a small valley, closed at one or both ends, in the central or southern Appalachian Mountains which sometimes results from the erosion of a geologic window. A small valley surrounded by mountains or ridges is sometimes known as a hollow, a deep, narrow valley is known as a cwm. Similar geological structures, such as canyons, ravines, gorges, gullies, chines, a valley formed by erosion is called an erosional valley, a valley formed by geologic events such as drop faults or the rise of highlands is called a structural valley. A valley formed by flowing water, or river valley, is usually V-shaped, the exact shape will depend on the characteristics of the stream flowing through it. Rivers with steep gradients, as in mountain ranges, produce steep walls, shallower slopes may produce broader and gentler valleys. However, in the lowest stretch of a river, where it approaches its base level, it begins to deposit sediment, in prehistory, the rivers were used as a source of fresh water and food, as well as a place to wash and a sewer. The proximity of water moderated temperature extremes and provided a source for irrigation, most of the first civilizations developed from these river valley communities. In geography, a vale is a river valley, usually with a particularly wide flood plain or flat valley bottom. In Southern England, vales commonly occur between the escarpment slopes of pairs of chalk formations, where the dome has been eroded, exposing less resistant underlying rock. Rift valleys, such as the Albertine Rift, are formed by the expansion of the Earths crust due to tectonic activity beneath the Earths surface, there are various forms of valley associated with glaciation that may be referred to as glacial valleys. A valley carved by glaciers is normally U-shaped, the valley becomes visible upon the recession of the glacier that forms it. When the ice recedes or thaws, the remains, often littered with small boulders that were transported within the ice. Floor gradient does not affect the shape, it is the glaciers size that does
13.
Manganese
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Manganese is a chemical element with symbol Mn and atomic number 25. It is not found as an element in nature, it is often found in minerals in combination with iron. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels, by the mid-18th century, Swedish chemist Carl Wilhelm Scheele had used pyrolusite to produce chlorine. Scheele and others were aware that pyrolusite contained a new element, johan Gottlieb Gahn was the first to isolate an impure sample of manganese metal in 1774, which he did by reducing the dioxide with carbon. Manganese phosphating is used for rust and corrosion prevention on steel, ionized manganese is used industrially as pigments of various colors, which depend on the oxidation state of the ions. The permanganates of alkali and alkaline earth metals are powerful oxidizers, Manganese dioxide is used as the cathode material in zinc-carbon and alkaline batteries. In biology, manganese ions function as cofactors for a variety of enzymes with many functions. Manganese enzymes are essential in detoxification of superoxide free radicals in organisms that must deal with elemental oxygen. Manganese also functions in the complex of photosynthetic plants. The element is a trace mineral for all known living organisms but is a neurotoxin. In larger amounts, and apparently with far greater effectiveness through inhalation, Manganese is a silvery-gray metal that resembles iron. It is hard and very brittle, difficult to fuse, Manganese metal and its common ions are paramagnetic. Manganese tarnishes slowly in air and oxidizes like iron in water containing dissolved oxygen, naturally occurring manganese is composed of one stable isotope, 55Mn. Eighteen radioisotopes have been isolated and described, the most stable being 53Mn with a half-life of 3.7 million years, 54Mn with a half-life of 312.3 days, and 52Mn with a half-life of 5.591 days. All of the radioactive isotopes have half-lives of less than three hours, and the majority of less than one minute. Manganese also has three meta states, Manganese is part of the iron group of elements, which are thought to be synthesized in large stars shortly before the supernova explosion. 53Mn decays to 53Cr with a half-life of 3.7 million years, because of its relatively short half-life, 53Mn is relatively rare, produced by cosmic rays impact on iron. Manganese isotopic contents are combined with chromium isotopic contents and have found application in isotope geology
14.
Iron ore
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Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are rich in iron oxides and vary in color from dark grey, bright yellow. The iron itself is found in the form of magnetite, hematite, goethite, limonite or siderite. Ores containing very high quantities of hematite or magnetite are known as ore or direct shipping ore. Iron ore is the raw material used to make pig iron, indeed, it has been argued that iron ore is more integral to the global economy than any other commodity, except perhaps oil. Metallic iron is virtually unknown on the surface of the Earth except as iron-nickel alloys from meteorites, although iron is the fourth most abundant element in the Earths crust, comprising about 5%, the vast majority is bound in silicate or more rarely carbonate minerals. Prior to the revolution, most iron was obtained from widely available goethite or bog ore, for example during the American Revolution. Prehistoric societies used laterite as a source of iron ore, historically, much of the iron ore utilized by industrialized societies has been mined from predominantly hematite deposits with grades of around 70% Fe. These deposits are referred to as direct shipping ores or natural ores. Iron-ore mining methods vary by the type of ore being mined, there are four main types of iron-ore deposits worked currently, depending on the mineralogy and geology of the ore deposits. These are magnetite, titanomagnetite, massive hematite and pisolitic ironstone deposits, banded iron formations are sedimentary rocks containing more than 15% iron composed predominantly of thinly bedded iron minerals and silica. Banded iron formations occur exclusively in Precambrian rocks, and are weakly to intensely metamorphosed. Banded iron formations may contain iron in carbonates or silicates, banded iron formations are known as taconite within North America. The mining involves moving tremendous amounts of ore and waste, the waste comes in two forms, non-ore bedrock in the mine, and unwanted minerals which are an intrinsic part of the ore rock itself. The mullock is mined and piled in dumps, and the gangue is separated during the beneficiation process and is removed as tailings. Taconite tailings are mostly the mineral quartz, which is chemically inert and this material is stored in large, regulated water settling ponds. The typical magnetite iron-ore concentrate has less than 0. 1% phosphorus, 3–7% silica, currently magnetite iron ore is mined in Minnesota and Michigan in the U. S. Direct-shipping iron-ore deposits are exploited on all continents except Antarctica, with the largest intensity in South America
15.
Copper
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Copper is a chemical element with symbol Cu and atomic number 29. It is a soft, malleable, and ductile metal with high thermal and electrical conductivity. A freshly exposed surface of copper has a reddish-orange color. Copper is one of the few metals that occur in nature in directly usable metallic form as opposed to needing extraction from an ore and this led to very early human use, from c.8000 BC. Copper used in buildings, usually for roofing, oxidizes to form a green verdigris, Copper is sometimes used in decorative art, both in its elemental metal form and in compounds as pigments. Copper compounds are used as agents, fungicides, and wood preservatives. Copper is essential to all living organisms as a trace dietary mineral because it is a key constituent of the enzyme complex cytochrome c oxidase. In molluscs and crustaceans, copper is a constituent of the blood pigment hemocyanin, replaced by the hemoglobin in fish. In humans, copper is found mainly in the liver, muscle, the adult body contains between 1.4 and 2.1 mg of copper per kilogram of body weight. The filled d-shells in these elements contribute little to interatomic interactions, unlike metals with incomplete d-shells, metallic bonds in copper are lacking a covalent character and are relatively weak. This observation explains the low hardness and high ductility of single crystals of copper, at the macroscopic scale, introduction of extended defects to the crystal lattice, such as grain boundaries, hinders flow of the material under applied stress, thereby increasing its hardness. For this reason, copper is supplied in a fine-grained polycrystalline form. The softness of copper partly explains its high conductivity and high thermal conductivity. The maximum permissible current density of copper in open air is approximately 3. 1×106 A/m2 of cross-sectional area, Copper is one of a few metallic elements with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air, as with other metals, if copper is put in contact with another metal, galvanic corrosion will occur. A green layer of verdigris can often be seen on old structures, such as the roofing of many older buildings. Copper tarnishes when exposed to sulfur compounds, with which it reacts to form various copper sulfides. There are 29 isotopes of copper, 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper, both have a spin of 3⁄2
16.
Coal
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Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon, along with quantities of other elements, chiefly hydrogen, sulfur, oxygen. A fossil fuel, coal forms when plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, after that bituminous coal. This involves biological and geological processes that take place over time, throughout history, coal has been used as an energy resource, primarily burned for the production of electricity and heat, and is also used for industrial purposes, such as refining metals. Coal is the largest source of energy for the generation of electricity worldwide, the extraction of coal, its use in energy production and its byproducts are all associated with environmental and health effects including climate change. Coal is extracted from the ground by coal mining, since 1983, the worlds top coal producer has been China. In 2015 China produced 3,747 million tonnes of coal –47. 7% of 7,861 million tonnes world coal production, in 2015 other large producers were United States, India, European Union and Australia. The word originally took the col in Old English, from Proto-Germanic *kula. In Old Turkic languages, kül is ash, cinders, öčür is quench, the compound charcoal in Turkic is öčür kül, literally quenched ashes, cinders, coals with elided anlaut ö- and inflection affixes -ülmüş. At various times in the geologic past, the Earth had dense forests in low-lying wetland areas, due to natural processes such as flooding, these forests were buried underneath soil. As more and more soil deposited over them, they were compressed, the temperature also rose as they sank deeper and deeper. As the process continued the plant matter was protected from biodegradation and oxidation and this trapped the carbon in immense peat bogs that were eventually covered and deeply buried by sediments. Under high pressure and high temperature, dead vegetation was slowly converted to coal, as coal contains mainly carbon, the conversion of dead vegetation into coal is called carbonization. The wide, shallow seas of the Carboniferous Period provided ideal conditions for coal formation, the exception is the coal gap in the Permian–Triassic extinction event, where coal is rare. Coal is known from Precambrian strata, which predate land plants — this coal is presumed to have originated from residues of algae, in its dehydrated form, peat is a highly effective absorbent for fuel and oil spills on land and water. It is also used as a conditioner for soil to make it able to retain. Lignite, or brown coal, is the lowest rank of coal, jet, a compact form of lignite, is sometimes polished and has been used as an ornamental stone since the Upper Palaeolithic
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Petroleum
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Petroleum is a naturally occurring, yellow-to-black liquid found in geological formations beneath the Earths surface, which is commonly refined into various types of fuels. Components of petroleum are separated using a technique called fractional distillation and it consists of hydrocarbons of various molecular weights and other organic compounds. The name petroleum covers both naturally occurring unprocessed crude oil and petroleum products that are made up of refined crude oil. A fossil fuel, petroleum is formed when large quantities of dead organisms, usually zooplankton and algae, are buried underneath sedimentary rock, Petroleum has mostly been recovered by oil drilling. Drilling is carried out studies of structural geology, sedimentary basin analysis. Petroleum is used in manufacturing a variety of materials. Concern over the depletion of the earths finite reserves of oil, the burning of fossil fuels plays the major role in the current episode of global warming. The word petroleum comes from Greek, πέτρα for rocks and Greek, the term was found in 10th-century Old English sources. It was used in the treatise De Natura Fossilium, published in 1546 by the German mineralogist Georg Bauer, Petroleum, in one form or another, has been used since ancient times, and is now important across society, including in economy, politics and technology. Great quantities of it were found on the banks of the river Issus, ancient Persian tablets indicate the medicinal and lighting uses of petroleum in the upper levels of their society. By 347 AD, oil was produced from bamboo-drilled wells in China, early British explorers to Myanmar documented a flourishing oil extraction industry based in Yenangyaung that, in 1795, had hundreds of hand-dug wells under production. The mythological origins of the oil fields at Yenangyaung, and its hereditary monopoly control by 24 families, Pechelbronn is said to be the first European site where petroleum has been explored and used. The still active Erdpechquelle, a spring where petroleum appears mixed with water has been used since 1498, Oil sands have been mined since the 18th century. In Wietze in lower Saxony, natural asphalt/bitumen has been explored since the 18th century, both in Pechelbronn as in Wietze, the coal industry dominated the petroleum technologies. In 1848 Young set up a small business refining the crude oil, Young eventually succeeded, by distilling cannel coal at a low heat, in creating a fluid resembling petroleum, which when treated in the same way as the seep oil gave similar products. The production of oils and solid paraffin wax from coal formed the subject of his patent dated 17 October 1850. In 1850 Young & Meldrum and Edward William Binney entered into partnership under the title of E. W. Binney & Co. at Bathgate in West Lothian, the worlds first oil refinery was built in 1856 by Ignacy Łukasiewicz. The demand for petroleum as a fuel for lighting in North America, edwin Drakes 1859 well near Titusville, Pennsylvania, is popularly considered the first modern well
18.
Tea
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Tea is an aromatic beverage commonly prepared by pouring hot or boiling water over cured leaves of the Camellia sinensis, an evergreen shrub native to Asia. After water, it is the most widely consumed drink in the world, Tea originated in Southwest China, where it was used as a medicinal drink. It was popularized as a drink during the Chinese Tang dynasty. Portuguese priests and merchants introduced it to Europe during the 16th century, during the 17th century, drinking tea became fashionable among Britons, who started large-scale production and commercialization of the plant in India to bypass the Chinese monopoly. The term herbal tea usually refers to infusions of fruit or herbs made without the tea plant, such as steeps of rosehip, chamomile and these are sometimes called tisanes or herbal infusions to prevent confusion with tea made from the tea plant. The tea industry often uses the term fruit tea to refer to what are in fact fruit-flavored black teas. The Chinese character for tea is 茶, originally written with a stroke as 荼. The word is pronounced differently in the different varieties of Chinese, such as chá in Mandarin, zo and dzo in Wu Chinese, there were other ancient words for tea, though ming is the only other one still in common use. Most Chinese languages, such as Mandarin and Cantonese, pronounce it along the lines of cha and these two pronunciations have made their separate ways into other languages around the world. Starting in the seventeen century, the Dutch played a dominant role in the early European tea trade via the Dutch East India Company. The Dutch borrowed the word for tea from Min Chinese, either through trade directly from Fujian or Formosa where they had established a port, or from Malay traders in Bantam, Java. The Dutch then introduced to other European languages this Min pronunciation for tea, including English tea, French thé, Spanish té and this pronunciation is also the most common form worldwide. The Portuguese adopted the Cantonese pronunciation chá, and spread it to India, the Korean and Japanese pronunciations of cha were borrowed into Korean and Japanese during earlier periods of Chinese history. A third form, the increasingly widespread chai, came from Persian چای chay, both the châ and chây forms are found in Persian dictionaries. English has all three forms, cha or char, attested from the 16th century, tea, from the 17th, however, the form chai refers specifically to a black tea mixed with honey, spices and milk in contemporary English. Tea plants are native to East Asia, and probably originated around the points of the lands of north Burma. Tea drinking may have begun in the Yunnan region during the Shang Dynasty in China, Chinese legends attribute the invention of tea to Shennong in 2737 BC, although evidence suggests that tea drinking may have been introduced from the southwest of China. The earliest written records of tea come from China, in the Chronicles of Huayang, it was recorded that the Ba people in Sichuan presented tu to the Zhou king
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Citrus
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Citrus is a genus of flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops like oranges, lemons, grapefruit, pomelo, the most recent research indicates an origin in Australia, New Caledonia and New Guinea. Citrus fruit has been cultivated in an area since ancient times. At various times, citrus plants were thought to be native to Asia, Europe, but the European oranges were originally brought from India at around the time of Alexander the Great, and the native oranges of Florida actually originated with the Spanish Conquistadors. The lemon reached Europe during the time of classical Rome, the generic name originated from Latin, where it referred to either the plant now known as Citron or a conifer tree. It is somehow related to the ancient Greek word for cedar and this may be due to perceived similarities in the smell of citrus leaves and fruit with that of cedar. Collectively, Citrus fruits and plants are known by the Romance loanword agrumes. The large citrus fruit of today evolved originally from small, edible berries over millions of years, Citrus plants diverged from a common ancestor about 15 million years ago, which was about when it diverged from the closely related severinia, for example the Chinese box orange. These estimates are made using genetic mapping of plant chloroplasts, the three original species in the citrus genus that have been hybridized into most modern commercial citrus fruit are the mandarin orange, pummelo, and citron. Within the last few years, all common citrus fruits were created by crossing those original species. Something similar has occurred with the array of chili peppers originating in the hybridization of a few initial species. Natural and cultivated citrus hybrids include commercially important fruit such as oranges, grapefruit, lemons, limes, apart from these four core citrus species, there are Australian limes and the recently discovered Mangshanyegan. Kumquats and Clymenia sp. are now considered to belong within the citrus genus. Trifoliate orange, which is used as commercial rootstock, is an outgroup. Phylogenetic analysis suggests the species of Oxanthera from New Caledonia should be transferred to the genus Citrus and these plants are large shrubs or small to moderate-sized trees, reaching 5–15 m tall, with spiny shoots and alternately arranged evergreen leaves with an entire margin. The flowers are solitary or in corymbs, each flower 2–4 cm diameter, with five white petals and numerous stamens. The fruit is a hesperidium, a berry, globose to elongated, 4–30 cm long and 4–20 cm diameter. The outermost layer of the pericarp is a called the flavedo
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Earthquake
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An earthquake is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earths lithosphere that creates seismic waves. Earthquakes can range in size from those that are so weak that they cannot be felt to those violent enough to people around. The seismicity or seismic activity of an area refers to the frequency, type, Earthquakes are measured using measurements from seismometers. The moment magnitude is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe and these two scales are numerically similar over their range of validity. Magnitude 3 or lower earthquakes are mostly imperceptible or weak and magnitude 7 and over potentially cause damage over larger areas. The largest earthquakes in historic times have been of magnitude slightly over 9, intensity of shaking is measured on the modified Mercalli scale. The shallower an earthquake, the damage to structures it causes. At the Earths surface, earthquakes manifest themselves by shaking and sometimes displacement of the ground, when the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides, and occasionally volcanic activity, in its most general sense, the word earthquake is used to describe any seismic event — whether natural or caused by humans — that generates seismic waves. Earthquakes are caused mostly by rupture of faults, but also by other events such as volcanic activity, landslides, mine blasts. An earthquakes point of rupture is called its focus or hypocenter. The epicenter is the point at ground level directly above the hypocenter, tectonic earthquakes occur anywhere in the earth where there is sufficient stored elastic strain energy to drive fracture propagation along a fault plane. The sides of a fault move past each other smoothly and aseismically only if there are no irregularities or asperities along the surface that increase the frictional resistance. Most fault surfaces do have such asperities and this leads to a form of stick-slip behavior, once the fault has locked, continued relative motion between the plates leads to increasing stress and therefore, stored strain energy in the volume around the fault surface. This continues until the stress has risen sufficiently to break through the asperity, suddenly allowing sliding over the portion of the fault. This energy is released as a combination of radiated elastic strain seismic waves, frictional heating of the fault surface and this process of gradual build-up of strain and stress punctuated by occasional sudden earthquake failure is referred to as the elastic-rebound theory. It is estimated that only 10 percent or less of a total energy is radiated as seismic energy. Most of the energy is used to power the earthquake fracture growth or is converted into heat generated by friction
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Air pollution
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Air pollution occurs when harmful substances including particulates and biological molecules are introduced into Earths atmosphere. It may cause diseases, allergies or death in humans, it may cause harm to other living organisms such as animals and food crops. Human activity and natural processes can both generate air pollution, indoor air pollution and poor urban air quality are listed as two of the worlds worst toxic pollution problems in the 2008 Blacksmith Institute Worlds Worst Polluted Places report. According to the 2014 WHO report, air pollution in 2012 caused the deaths of around 7 million people worldwide, an air pollutant is a substance in the air that can have adverse effects on humans and the ecosystem. The substance can be particles, liquid droplets, or gases. A pollutant can be of natural origin or man-made, pollutants are classified as primary or secondary. Primary pollutants are usually produced from a process, such as ash from a volcanic eruption, other examples include carbon monoxide gas from motor vehicle exhaust, or the sulfur dioxide released from factories. Secondary pollutants are not emitted directly, rather, they form in the air when primary pollutants react or interact. Ground level ozone is a prominent example of a secondary pollutant, some pollutants may be both primary and secondary, they are both emitted directly and formed from other primary pollutants. Substances emitted into the atmosphere by human activity include, Carbon dioxide - Debate continues over whether carbon dioxide should be classified as an atmospheric pollutant, because of its role as a greenhouse gas it has been described as the leading pollutant and the worst climate pollution. Against this it is argued that carbon dioxide is a component of the atmosphere, essential for plant life. This question of terminology has practical effects, for example as determining whether the U. S. Clean Air Act is deemed to regulate CO2 emissions, CO2 increase in earths atmosphere has been accelerating. Sulfur oxides - particularly sulfur dioxide, a compound with the formula SO2. SO2 is produced by volcanoes and in industrial processes. Coal and petroleum often contain sulfur compounds, and their combustion generates sulfur dioxide, further oxidation of SO2, usually in the presence of a catalyst such as NO2, forms H2SO4, and thus acid rain. This is one of the causes for concern over the impact of the use of these fuels as power sources. Nitrogen oxides - Nitrogen oxides, particularly nitrogen dioxide, are expelled from high temperature combustion and they can be seen as a brown haze dome above or a plume downwind of cities. Nitrogen dioxide is a compound with the formula NO2
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Water pollution
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Water pollution is the contamination of water bodies. This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds, Water pollution affects the entire biosphere – plants and organisms living in these bodies of water. In almost all cases the effect is damaging not only to individual species and population, Water pollution is a major global problem which requires ongoing evaluation and revision of water resource policy at all levels. It has been suggested that pollution is the leading worldwide cause of deaths and diseases. An estimated 580 people in India die of water related illness every day. About 90 percent of the water in the cities of China is polluted, as of 2007, half a billion Chinese had no access to safe drinking water. In addition to the problems of water pollution in developing countries. The head of Chinas national development agency said in 2007 that one quarter the length of Chinas seven main rivers were so poisoned the water harmed the skin. Natural phenomena such as volcanoes, algae blooms, storms, and earthquakes also cause changes in water quality. Although interrelated, surface water and groundwater have often studied and managed as separate resources. Surface water seeps through the soil and becomes groundwater, conversely, groundwater can also feed surface water sources. Sources of surface water pollution are generally grouped into two based on their origin. Point source water pollution refers to contaminants that enter a waterway from a single, identifiable source, examples of sources in this category include discharges from a sewage treatment plant, a factory, or a city storm drain. The U. S. Clean Water Act defines point source for regulatory enforcement purposes, the CWA definition of point source was amended in 1987 to include municipal storm sewer systems, as well as industrial storm water, such as from construction sites. Nonpoint source pollution refers to contamination that does not originate from a single discrete source. NPS pollution is often the cumulative effect of small amounts of contaminants gathered from a large area, a common example is the leaching out of nitrogen compounds from fertilized agricultural lands. Nutrient runoff in storm water from sheet flow over a field or a forest are also cited as examples of NPS pollution. Contaminated storm water washed off of parking lots, roads and highways, however, because this runoff is typically channeled into storm drain systems and discharged through pipes to local surface waters, it becomes a point source
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Soil contamination
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Soil contamination or soil pollution as part of land degradation is caused by the presence of xenobiotic chemicals or other alteration in the natural soil environment. It is typically caused by activity, agricultural chemicals, or improper disposal of waste. The most common chemicals involved are petroleum hydrocarbons, polynuclear aromatic hydrocarbons, solvents, pesticides, lead, Contamination is correlated with the degree of industrialization and intensity of chemical usage. In North America and Western Europe the extent of contaminated land is best known, with many of countries in areas having a legal framework to identify. Developing countries tend to be tightly regulated despite some of them having undergone significant industrialization. Soil pollution can be caused by the following Oil drilling Mining and activities by other heavy industries Accidental spills as may happen during activities, in a wider sense, genetically modified plants can count as a risk factor for soils, because of their potential to affect the soil fauna. Any activity that leads to other forms of soil degradation may indirectly worsen the effects in that soil remediation becomes more tedious. Coal naturally concentrates lead and zinc during its formation, as well as heavy metals to a lesser degree. When the coal is burned, most of these metals become concentrated in the ash, coal ash and slag may contain sufficient lead to qualify as a characteristic hazardous waste, defined in the USA as containing more than 5 mg/l of extractable lead using the TCLP procedure. In addition to lead, coal ash typically contains variable but significant concentrations of polynuclear aromatic hydrocarbons and these PAHs are known human carcinogens and the acceptable concentrations of them in soil are typically around 1 mg/kg. Coal ash and slag can be recognised by the presence of off-white grains in soil, gray heterogeneous soil, or bubbly, treated sewage sludge, known in the industry as biosolids, has become controversial as a fertilizer. As it is the byproduct of sewage treatment, it contains more contaminants such as organisms, pesticides. In the European Union, the Urban Waste Water Treatment Directive allows sewage sludge to be sprayed onto land, the volume is expected to double to 185,000 tons of dry solids in 2005. This has good agricultural properties due to the nitrogen and phosphate content. In 1990/1991, 13% wet weight was sprayed onto 0. 13% of the land, however, this is expected to rise 15 fold by 2005. Advocates say there is a need to control this so that microorganisms do not get into water courses. A pesticide is a substance or mixture of substances used to kill a pest, a pesticide may be a chemical substance, biological agent, antimicrobial, disinfectant or device used against any pest. Although there are benefits to the use of pesticides, there are drawbacks, such as potential toxicity to humans
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Georgia (country)
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Georgia is a country in the Caucasus region of Eurasia. The capital and largest city is Tbilisi, Georgia covers a territory of 69,700 square kilometres, and its 2016 population is about 3.72 million. Georgia is a unitary, semi-presidential republic, with the government elected through a representative democracy, during the classical era, several independent kingdoms became established in what is now Georgia. The kingdoms of Colchis and Iberia adopted Christianity in the early 4th century, a unified Kingdom of Georgia reached the peak of its political and economic strength during the reign of King David IV and Queen Tamar in the 12th and early 13th centuries. Thereafter the kingdom declined and eventually disintegrated under hegemony of various powers, including the Mongols, the Ottoman Empire. Russian rule over Georgia was eventually acknowledged in various treaties with Iran. Since the establishment of the modern Georgian republic in April 1991, post-communist Georgia suffered from civil, the countrys Western orientation soon led to the worsening of relations with Russia, culminating in the brief Russo-Georgian War in August 2008. Georgia is a member of the United Nations, the Council of Europe, and it contains two de facto independent regions, Abkhazia and South Ossetia, which gained limited international recognition after the 2008 Russo-Georgian War. Georgia and a part of the international community consider the regions to be part of Georgias sovereign territory under Russian military occupation. Georgia probably stems from the Persian designation of the Georgians – gurğān, in the 11th and 12th centuries adapted via Syriac gurz-ān/gurz-iyān, starting with the Persian word gurğ/gurğān, the word was later adopted in numerous other languages, including Slavic and West European languages. This term itself might have established through the ancient Iranian appellation of the near-Caspian region. The self-designation used by ethnic Georgians is Kartvelebi, the medieval Georgian Chronicles present an eponymous ancestor of the Kartvelians, Kartlos, a great-grandson of Japheth. However, scholars agree that the word is derived from the Karts, the name Sakartvelo consists of two parts. Its root, kartvel-i, specifies an inhabitant of the core central-eastern Georgian region of Kartli, ancient Greeks and Romans referred to early western Georgians as Colchians and eastern Georgians as Iberians. Today the full, official name of the country is Georgia, before the 1995 constitution came into force the countrys name was the Republic of Georgia. The territory of modern-day Georgia was inhabited by Homo erectus since the Paleolithic Era, the proto-Georgian tribes first appear in written history in the 12th century BC. The earliest evidence of wine to date has found in Georgia. In fact, early metallurgy started in Georgia during the 6th millennium BC, the classical period saw the rise of a number of early Georgian states, the principal of which was Colchis in the west and Iberia in the east
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Caucasus
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The Caucasus /ˈkɔːkəsəs/ or Caucasia /kɔːˈkeɪʒə/ is a region at the border of Europe and Asia, situated between the Black and the Caspian seas. It is home to the Caucasus Mountains, which contain Europes highest mountain, politically, the Caucasus region is separated between northern and southern parts. The southern parts consist of independent sovereign states, and the parts are under the jurisdiction of the Russian Federation. The region is known for its diversity, aside from Indo-European and Turkic languages, the Kartvelian, Northwest Caucasian. Pliny the Elders Natural History derives the name of the Caucasus from Scythian kroy-khasis, German linguist Paul Kretschmer notes that the Latvian word Kruvesis also means ice. According to German philologists Otto Schrader and Alfons A. Nehring, the South Caucasus region and southern Dagestan were the furthest points of Persian expansions, with areas to the north of Caucasus Mountains practically impregnable. The mythological mountain of Qaf, the worlds highest mountain that ancient lore shrouded in mystery, was said to be situated in this region, therefore, the Caucasus might be associated with the legendary mountain. The Ciscaucasus contains the majority of the Greater Caucasus Mountain range. It includes Southwestern Russia and northern parts of Georgia and Azerbaijan, the Transcaucasus is bordered on the north by Russia, on the west by the Black Sea and Turkey, on the east by the Caspian Sea, and on the south by Iran. It includes the Caucasus Mountains and surrounding lowlands, all of Armenia, Azerbaijan and Georgia are in South Caucasus. The main Greater Caucasus range is generally perceived to be the line between Asia and Europe. The highest peak in the Caucasus is Mount Elbrus in the western Ciscaucasus in Russia, the Caucasus is one of the most linguistically and culturally diverse regions on Earth. The nation states that comprise the Caucasus today are the post-Soviet states Georgia, Armenia, three territories in the region claim independence but are recognized as such by only a handful or by no independent states, Nagorno-Karabakh, Abkhazia and South Ossetia. Abkhazia and South Ossetia are recognised by the majority of independent states as part of Georgia, the Russian divisions include Krasnodar Krai, Stavropol Krai, and the autonomous republics of Adygea, Karachay–Cherkessia, Kabardino-Balkaria, North Ossetia, Ingushetia, Chechnya, and Dagestan. The region has many different languages and language families, there are more than 50 ethnic groups living in the region. Russian is used as a common language, today the peoples of the Northern and Southern Caucasus tend to be either Eastern Orthodox Christians, Oriental Orthodox Christians, or Sunni Muslims. Shia Islam has had many adherents historically in Azerbaijan, located in the part of the region. Located on the peripheries of Turkey, Iran, and Russia, the region has been an arena for political, military, religious, throughout its history, the Caucasus was usually incorporated into the Iranian world
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Southwest Asia
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Western Asia, West Asia, Southwestern Asia or Southwest Asia is the westernmost subregion of Asia. The concept is in limited use, as it overlaps with the Middle East. The term is used for the purposes of grouping countries in statistics. The total population of Western Asia is an estimated 300 million as of 2015, in an unrelated context, the term is also used in ancient history and archaeology to divide the Fertile Crescent into the Asiatic or Western Asian cultures as opposed to ancient Egypt. As a geographic concept, Western Asia almost always includes the Levant, Mesopotamia, the term is used pragmatically and has no correct or generally agreed-upon definition. In contrast to this definition, the United Nations Industrial Development Organisation in its 2015 yearbook also includes Armenia and Azerbaijan, unlike the UNIDO, the United Nations Statistics Division excludes Iran from Western Asia and include Turkey, Georgia, and Cyprus in the region. These four countries are listed in the European category of the United Nations Educational, Scientific, the Olympic Council of Asias multi-sport event West Asian Games are contested by athletes representing these thirteen countries. Among the regions sports organisations are the West Asia Basketball Association, West Asian Billiards and Snooker Federation, West Asian Football Federation, Western Asia was in use as a geographical term in the early 19th century, even before Near East became current as a geopolitical concept. Use of the term in the context of contemporary geopolitics or world economy appears to date from the 1960s, Western Asia is located directly south of Eastern Europe. The region is surrounded by seven major seas, the Aegean Sea, the Black Sea, the Caspian Sea, the Persian Gulf, the Arabian Sea, the Red Sea, and the Mediterranean Sea. The Dasht-e Kavir and Dasht-e Lut deserts in eastern Iran naturally delimit the region somewhat from Asia itself, three major tectonic plates converge on Western Asia, including the African, Eurasian, and Arabian plates. The boundaries between the plates make up the Azores-Gibraltar Ridge, extending across North Africa, the Red Sea. The Arabian Plate is moving northward into the Anatolian plate at the East Anatolian Fault, several major aquifers provide water to large portions of Western Asia. In Saudi Arabia, two large aquifers of Palaeozoic and Triassic origins are located beneath the Jabal Tuwayq mountains and areas west to the Red Sea. Cretaceous and Eocene-origin aquifers are located beneath large portions of central and eastern Saudi Arabia, including Wasia, flood or furrow irrigation, as well as sprinkler methods, are extensively used for irrigation, covering nearly 90,000 km² across Western Asia for agriculture. Western Asia is primarily arid and semi-arid, and can be subject to drought, the region consists of grasslands, rangelands, deserts, and mountains. Water shortages are a problem in parts of West Asia, with rapidly growing populations increasing demands for water. Major rivers, including the Tigris and Euphrates, provide sources for water to support agriculture
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Eastern Europe
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Eastern Europe, also known as East Europe, is the eastern part of the European continent. There is no consensus on the area it covers, partly because the term has a wide range of geopolitical, geographical, cultural. There are almost as many definitions of Eastern Europe as there are scholars of the region, a related United Nations paper adds that every assessment of spatial identities is essentially a social and cultural construct. One definition describes Eastern Europe as an entity, the region lying in Europe with main characteristics consisting in Byzantine, Orthodox. Another definition was created during the Cold War and used more or less synonymously with the term Eastern Bloc, a similar definition names the formerly communist European states outside the Soviet Union as Eastern Europe. Historians and social scientists generally view such definitions as outdated or relegating, several definitions of Eastern Europe exist today, but they often lack precision or are extremely general. These definitions vary both across cultures and among experts, even scientists, recently becoming more and more imprecise. The Ural Mountains, Ural River, and the Caucasus Mountains are the land border of the eastern edge of Europe. Eurovoc, a multilingual thesaurus maintained by the Publications Office of the European Union, provides entries for 23 EU languages, of these, those in italics are classified as Eastern Europe in this source. Other official web-pages of the European Union classify some of the countries as strictly Central European. The East–West Schism is the break of communion and theology between what are now the Eastern and Western churches which began in the 11th century and lasts until this very day and it divided Christianity in Europe, and consequently the world, into Western Christianity and Eastern Christianity. Since the Great Schism of 1054, Europe has been divided between Roman Catholic and Protestant churches in the West, and the Eastern Orthodox Christian churches in the east, due to this religious cleavage, Eastern Orthodox countries are often associated with Eastern Europe. A cleavage of this sort is, however, often problematic, for example, Greece is overwhelmingly Orthodox, the fall of the Iron Curtain brought the end of the East–West division in Europe, but this geopolitical concept is sometimes still used for quick reference by the media. The Baltic states have seats in the Nordic Council as observer states and they also are members of the Nordic-Baltic Eight whereas Eastern European countries formed their own alliance called the Visegrád Group. Estonia Latvia Lithuania The Caucasus nations may be included in the definitions of Eastern Europe, the extent of their geographic or political affiliation with Europe varies by country and source. All three states are members of the European Unions Eastern Partnership program and the Euronest Parliamentary Assembly, on 12 January 2002, the European Parliament noted that Armenia and Georgia may enter the EU in the future. Georgia — in modern geography, Georgia has been classified as part of Eastern Europe. Under the European Union’s geographic criteria, Georgia is viewed as part of Eastern Europe and is the only Caucasus country to be actively seeking EU membership and it is a member of Council of Europe and Eurocontrol
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Black Sea
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The Black Sea is a body of water between Eastern Europe and Western Asia, bounded by Bulgaria, Georgia, Romania, Russia, Turkey, and Ukraine. It is supplied by a number of rivers, such as the Danube, Dnieper, Rioni, Southern Bug. The Black Sea has an area of 436,400 km2, a depth of 2,212 m. It is constrained by the Pontic Mountains to the south and by the Caucasus Mountains to the east, the longest east-west extent is about 1,175 km. The Black Sea has a water balance, that is, a net outflow of water 300 km3 per year through the Bosphorus. Mediterranean water flows into the Black Sea as part of a two-way hydrological exchange, the Black Sea drains into the Mediterranean Sea and then the Atlantic Ocean, via the Aegean Sea and various straits. The Bosphorus Strait connects it to the Sea of Marmara, and these waters separate Eastern Europe and Western Asia. The Black Sea is also connected to the Sea of Azov by the Strait of Kerch, the water level has varied significantly. Due to these variations in the level in the basin. At certain critical water levels it is possible for connections with surrounding water bodies to become established and it is through the most active of these connective routes, the Turkish Straits, that the Black Sea joins the world ocean. When this hydrological link is not present, the Black Sea is a basin, operating independently of the global ocean system. Currently the Black Sea water level is high, thus water is being exchanged with the Mediterranean. The Turkish Straits connect the Black Sea with the Aegean Sea, and comprise the Bosphorus, the Sea of Marmara, the International Hydrographic Organization defines the limits of the Black Sea as follows, On the Southwest. The Northeastern limit of the Sea of Marmara, a line joining Cape Takil and Cape Panaghia. Strabos Geographica reports that in antiquity, the Black Sea was often just called the Sea, for the most part, Graeco-Roman tradition refers to the Black Sea as the Hospitable sea, Εὔξεινος Πόντος Eúxeinos Póntos. This is a euphemism replacing an earlier Inhospitable Sea, Πόντος Ἄξεινος Póntos Áxeinos, strabo thinks that the Black Sea was called inhospitable before Greek colonization because it was difficult to navigate, and because its shores were inhabited by savage tribes. The name was changed to hospitable after the Milesians had colonized the southern shoreline and it is also possible that the epithet Áxeinos arose by popular etymology from a Scythian word axšaina- unlit, dark, the designation Black Sea may thus date from antiquity. A map of Asia dating to 1570, entitled Asiae Nova Descriptio, from Abraham Orteliuss Theatrum Orbis Terrarum, english-language writers of the 18th century often used the name Euxine Sea to refer to the Black Sea
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Russia
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Russia, also officially the Russian Federation, is a country in Eurasia. The European western part of the country is more populated and urbanised than the eastern. Russias capital Moscow is one of the largest cities in the world, other urban centers include Saint Petersburg, Novosibirsk, Yekaterinburg, Nizhny Novgorod. Extending across the entirety of Northern Asia and much of Eastern Europe, Russia spans eleven time zones and incorporates a range of environments. It shares maritime borders with Japan by the Sea of Okhotsk, the East Slavs emerged as a recognizable group in Europe between the 3rd and 8th centuries AD. Founded and ruled by a Varangian warrior elite and their descendants, in 988 it adopted Orthodox Christianity from the Byzantine Empire, beginning the synthesis of Byzantine and Slavic cultures that defined Russian culture for the next millennium. Rus ultimately disintegrated into a number of states, most of the Rus lands were overrun by the Mongol invasion. The Soviet Union played a role in the Allied victory in World War II. The Soviet era saw some of the most significant technological achievements of the 20th century, including the worlds first human-made satellite and the launching of the first humans in space. By the end of 1990, the Soviet Union had the second largest economy, largest standing military in the world. It is governed as a federal semi-presidential republic, the Russian economy ranks as the twelfth largest by nominal GDP and sixth largest by purchasing power parity in 2015. Russias extensive mineral and energy resources are the largest such reserves in the world, making it one of the producers of oil. The country is one of the five recognized nuclear weapons states and possesses the largest stockpile of weapons of mass destruction, Russia is a great power as well as a regional power and has been characterised as a potential superpower. The name Russia is derived from Rus, a state populated mostly by the East Slavs. However, this name became more prominent in the later history, and the country typically was called by its inhabitants Русская Земля. In order to distinguish this state from other states derived from it, it is denoted as Kievan Rus by modern historiography, an old Latin version of the name Rus was Ruthenia, mostly applied to the western and southern regions of Rus that were adjacent to Catholic Europe. The current name of the country, Россия, comes from the Byzantine Greek designation of the Kievan Rus, the standard way to refer to citizens of Russia is Russians in English and rossiyane in Russian. There are two Russian words which are translated into English as Russians
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Turkey
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Turkey, officially the Republic of Turkey, is a transcontinental country in Eurasia, mainly in Anatolia in Western Asia, with a smaller portion on the Balkan peninsula in Southeast Europe. Turkey is a democratic, secular, unitary, parliamentary republic with a cultural heritage. The country is encircled by seas on three sides, the Aegean Sea is to the west, the Black Sea to the north, and the Mediterranean Sea to the south. The Bosphorus, the Sea of Marmara, and the Dardanelles, Ankara is the capital while Istanbul is the countrys largest city and main cultural and commercial centre. Approximately 70-80% of the countrys citizens identify themselves as ethnic Turks, other ethnic groups include legally recognised and unrecognised minorities. Kurds are the largest ethnic minority group, making up approximately 20% of the population, the area of Turkey has been inhabited since the Paleolithic by various ancient Anatolian civilisations, as well as Assyrians, Greeks, Thracians, Phrygians, Urartians and Armenians. After Alexander the Greats conquest, the area was Hellenized, a process continued under the Roman Empire. The Seljuk Sultanate of Rûm ruled Anatolia until the Mongol invasion in 1243, the empire reached the peak of its power in the 16th century, especially during the reign of Suleiman the Magnificent. During the war, the Ottoman government committed genocides against its Armenian, Assyrian, following the war, the conglomeration of territories and peoples that formerly comprised the Ottoman Empire was partitioned into several new states. Turkey is a member of the UN, an early member of NATO. Turkeys growing economy and diplomatic initiatives have led to its recognition as a regional power while her location has given it geopolitical, the name of Turkey is based on the ethnonym Türk. The first recorded use of the term Türk or Türük as an autonym is contained in the Old Turkic inscriptions of the Göktürks of Central Asia, the English name Turkey first appeared in the late 14th century and is derived from Medieval Latin Turchia. Similarly, the medieval Khazar Empire, a Turkic state on the shores of the Black. The medieval Arabs referred to the Mamluk Sultanate as al-Dawla al-Turkiyya, the Ottoman Empire was sometimes referred to as Turkey or the Turkish Empire among its European contemporaries. The Anatolian peninsula, comprising most of modern Turkey, is one of the oldest permanently settled regions in the world, various ancient Anatolian populations have lived in Anatolia, from at least the Neolithic period until the Hellenistic period. Many of these peoples spoke the Anatolian languages, a branch of the larger Indo-European language family, in fact, given the antiquity of the Indo-European Hittite and Luwian languages, some scholars have proposed Anatolia as the hypothetical centre from which the Indo-European languages radiated. The European part of Turkey, called Eastern Thrace, has also been inhabited since at least forty years ago. It is the largest and best-preserved Neolithic site found to date, the settlement of Troy started in the Neolithic Age and continued into the Iron Age
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Armenia
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Armenia, officially the Republic of Armenia, is a sovereign state in the South Caucasus region of Eurasia. The Republic of Armenia constitutes only one-tenth of historical Armenia, Armenia is a unitary, multi-party, democratic nation-state with an ancient cultural heritage. Urartu was established in 860 BC and by the 6th century BC it was replaced by the Satrapy of Armenia, in the 1st century BC the Kingdom of Armenia reached its height under Tigranes the Great. Armenia became the first state in the world to adopt Christianity as its official religion, in between the late 3rd century to early years of the 4th century, the state became the first Christian nation. The official date of adoption of Christianity is 301 AD. The ancient Armenian kingdom was split between the Byzantine and Sasanian Empires around the early 5th century, under the Bagratuni dynasty, the Bagratid Kingdom of Armenia was restored in the 9th century. Declining due to the wars against the Byzantines, the fell in 1045. An Armenian principality and later a kingdom Cilician Armenia was located on the coast of the Mediterranean Sea between the 11th and 14th centuries. By the 19th century, Eastern Armenia had been conquered by the Russian Empire, during World War I, Armenians living in their ancestral lands in the Ottoman Empire were systematically exterminated in the Armenian Genocide. By 1920, the state was incorporated into the Transcaucasian Socialist Federative Soviet Republic, in 1936, the Transcaucasian state was dissolved, transforming its constituent states, including the Armenian Soviet Socialist Republic, into full Union republics. The modern Republic of Armenia became independent in 1991 during the dissolution of the Soviet Union, the Republic of Armenia recognises the Armenian Apostolic Church, the worlds oldest national church, as the countrys primary religious establishment. The unique Armenian alphabet was invented by Mesrop Mashtots in 405 AD, Armenia is a member of the Eurasian Economic Union, the Council of Europe and the Collective Security Treaty Organization. Armenia supports the de facto independent Nagorno-Karabakh Republic, which was proclaimed in 1991, the native Armenian name for the country is Հայք. The name in the Middle Ages was extended to Հայաստան, by addition of the Persian suffix -stan, the further origin of the name is uncertain. It is also postulated that the name Hay comes from one of the two confederated, Hittite vassal states—the Ḫayaša-Azzi. The exonym Armenia is attested in the Old Persian Behistun Inscription as Armina, the ancient Greek terms Ἀρμενία and Ἀρμένιοι are first mentioned by Hecataeus of Miletus. Xenophon, a Greek general serving in some of the Persian expeditions, describes many aspects of Armenian village life and he relates that the people spoke a language that to his ear sounded like the language of the Persians. According to the histories of both Moses of Chorene and Michael Chamchian, Armenia derives from the name of Aram, a descendant of Hayk
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Azerbaijan
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Azerbaijan, officially the Republic of Azerbaijan, is a country in the South Caucasus region, situated at the crossroads of Southwest Asia and Southeastern Europe. It is bound by the Caspian Sea to the east, Russia to the north, Georgia to the northwest, Armenia to the west and Iran to the south. The exclave of Nakhchivan is bound by Armenia to the north and east, Iran to the south and west, the Azerbaijan Democratic Republic proclaimed its independence in 1918 and became the first democratic state in the Muslim orient world. The country was incorporated into the Soviet Union in 1920 as the Azerbaijan Soviet Socialist Republic, the modern Republic of Azerbaijan proclaimed its independence on 30 August 1991, prior to the official dissolution of the USSR in December 1991. In September 1991, the Armenian majority of the disputed Nagorno-Karabakh region seceded to form the Nagorno-Karabakh Republic, the region and seven adjacent districts outside it became de facto independent with the end of the Nagorno-Karabakh War in 1994. These regions are recognized as part of Azerbaijan pending a solution to the status of the Nagorno-Karabakh. Azerbaijan is a unitary semi-presidential republic, the country is a member state of the Council of Europe, the OSCE and the NATO Partnership for Peace program. It is one of six independent Turkic states, a member of the Turkic Council. Azerbaijan has diplomatic relations with 158 countries and holds membership in 38 international organizations and it is one of the founding members of GUAM, the Commonwealth of Independent States and the Organization for the Prohibition of Chemical Weapons. Its term of office began on 19 June 2006, Azerbaijan is also a member state of the Non-Aligned Movement, holds observer status in World Trade Organization and is a correspondent at the International Telecommunication Union. The Constitution of Azerbaijan does not declare an official religion and all political forces in the country are secularist. However, the majority of the population are of a Shiite Muslim background, Azerbaijan has a high level of human development which ranks on par with most Eastern European countries. It has a rate of economic development and literacy, as well as a low rate of unemployment. According to the Davos World Economic Forum, Azerbaijans economy has scored 37th place within 138 countries in 2016, Global Competitiveness Index 2015 indicates that Azerbaijan scores highest in its region. ASAN services, established with Presidential Decree, are known for eliminating bribery. ASAN Service has been awarded with United Nations Public Service Award 2015, the ruling party, the New Azerbaijan Party, has been accused of authoritarianism and human rights abuses. The original etymology of name is thought to have its roots in the once-dominant Zoroastrianism. In the Avesta, Frawardin Yasht, there is a mention of âterepâtahe ashaonô fravashîm ýazamaide, the name Atropates itself is the Greek transliteration of an Old Iranian, probably Median, compounded name with the meaning Protected by the Fire or The Land of the Fire
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Transcaucasia
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Transcaucasia, or the South Caucasus, is a geopolitical region in the vicinity of the southern Caucasus Mountains on the border of Eastern Europe and Western Asia. Transcaucasia roughly corresponds to modern Georgia, Armenia, and Azerbaijan, Transcaucasia and Ciscaucasia together comprise the larger Caucasus geographical region that divides Eurasia. All of present-day Armenia is in Transcaucasia, the majority of present-day Georgia and Azerbaijan, including the exclave of Nakhchivan, parts of Iran and Turkey are also included within the region of Transcaucasia. Goods produced in the region include oil, manganese ore, tea, citrus fruits and it remains one of the most politically tense regions in the post-Soviet area, and contains three heavily disputed areas, Abkhazia, South Ossetia, and Nagorno-Karabakh. Between 1878 and 1917 the Russian controlled province of Kars Oblast was also incorporated into the Transcaucasus, Transcaucasia is a Latin rendering of the Russian-language word zakavkazie, meaning the area beyond the Caucasus Mountains. This implies a Russian vantage point, and is analogous to similar terms such as Transnistria and Transleithania, other forms of this word include Trans-Caucasus and Transcaucasus. The region is referred to as Southern Caucasia and the South Caucasus. Located on the peripheries of Turkey, Iran and Russia, the region has been an arena for political, military, religious, throughout history, Transcaucasia was usually under the direct rule of the various in-Iran based empires and part of the Iranian world. In the course of the 19th century, Qajar Iran had to cede the region as a result of the two Russo-Persian Wars of that century to Imperial Russia. Ancient kingdoms of the region included Armenia, Albania and Iberia, later, the Orthodox Christian Kingdom of Georgia dominated most of Transcaucasia. The region was conquered by the Seljuk, Mongol, Turkic, Safavid, Ottoman, Afsharid. The 1826-1828 conquerings were confirmed in the 1828 Treaty of Turkmenchay, in 1801, what is now Georgia was formally incorporated into the Russian Empire. After 1828-1829 war, Ottomans ceded Western Georgia except Adjaria, which was known as Sanjak of Batum, finally after Russo-Turkish War, Russians completed conquest of Transcaucasus. In 1844, Georgia, Armenia and Azerbaijan were combined into a single czarist government-general, Transcaucasia, in particular where modern-day Turkey, Georgia, Armenia and Iran are located, is one of the native areas of the wine-producing vine Vitis vinifera. Some experts speculate that Transcaucasia may be the birthplace of wine production, archaeological excavations and carbon dating of grape seeds from the area have dated back to 7000–5000 BC. Wine found in Iran has been dated to c. 7400 BC and c. 5000 BC, the earliest winery, dated to c. 4000 BC, was found in Armenia
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Eurasia
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Eurasia /jʊˈreɪʒə/ is a combined continental landmass of Europe and Asia. The term is a portmanteau of its constituent continents, in geology, Eurasia is often considered as a single rigid megablock. However, the rigidity of Eurasia is debated based on the paleomagnet data, Eurasia covers around 55,000,000 square kilometres, or around 36. 2% of the Earths total land area. The landmass contains around 5.0 billion people, equating to approximately 70% of the human population, humans first settled in Eurasia between 60,000 and 125,000 years ago. Physiographically, Eurasia is a single continent, the concepts of Europe and Asia as distinct continents date back to antiquity and their borders are geologically arbitrary. Eurasia is connected to Africa at the Suez Canal, and Eurasia is sometimes combined with Africa as the largest contiguous landmass on Earth called Afro-Eurasia. Eurasia formed 375 to 325 million years ago with the merging of Siberia, Kazakhstania, and Baltica, chinese cratons collided with Siberias southern coast. Eurasia has been the host of ancient civilizations, including those based in Mesopotamia. In the Axial Age, a belt of civilizations stretched through the Eurasian subtropical zone from the Atlantic to the Pacific. This belt became the mainstream of world history for two millennia, originally, “Eurasia” is a geographical notion, in this sense, it is simply the biggest continent, the combined landmass of Europe and Asia. However, geopolitically, the word has different meanings, reflecting the specific geopolitical interests of each nation. “Eurasia” is one of the most important geopolitical concepts, as Zbigniew Brzezinski observed, how America manages Eurasia is critical. A power that dominates “Eurasia” would control two of the three most advanced and economically productive regions. About 75 per cent of the people live in “Eurasia”. “Eurasia” accounts for about three-fourths of the known energy resources. ”At the moment one of the most prominent projects of the European Union is the Russia - EU Four Common Spaces Initiative. A political and economic union of former Soviet states named the Eurasian Economic Union was established in 2015, the Russian concept of “Eurasia” corresponded initially more or less to the land area of Imperial Russia in 1914, including parts of Eastern Europe. One of Russias main geopolitical interests lies in ever closer integration with those countries that it considers part of “Eurasia. ”Every two years since 1996 a meeting of most Asian and European countries is organised as the Asia-Europe Meeting. In ancient times, the Greeks classified Europe and Asia as separate lands, where to draw the dividing line between the two regions is still a matter of discussion
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Caspian Sea
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The Caspian Sea is the largest enclosed inland body of water on Earth by area, variously classed as the worlds largest lake or a full-fledged sea. It is in a basin located between Europe and Asia. It is bounded by Kazakhstan to the northeast, Russia to the northwest, Azerbaijan to the west, Iran to the south, the Caspian Sea lies to the east of the Caucasus Mountains and to the west of the vast steppe of Central Asia. In its northern part, the Caspian Depression lies 28 to 130 m below sea level, the sea bed in the southern part reaches as low as 1023 m below sea level, which is the second lowest natural depression on earth after Lake Baikal. The ancient inhabitants of its coast perceived the Caspian Sea as an ocean, probably because of its saltiness, the sea has a surface area of 371,000 km2 and a volume of 78,200 km3. It has a salinity of approximately 1. 2%, about a third of the salinity of most seawater, the word Caspian is derived from the name of the Caspi, an ancient people who lived to the southwest of the sea in Transcaucasia. Strabo wrote that to the country of the Albanians belongs also the territory called Caspiane, which was named after the Caspian tribe, as was also the sea, but the tribe has now disappeared. Moreover, the Caspian Gates, which is the name of a region in Irans Tehran province, the Iranian city of Qazvin shares the root of its name with that of the sea. In fact, the traditional Arabic name for the sea itself is Bahr al-Qazwin, in classical antiquity among Greeks and Persians it was called the Hyrcanian Ocean. In Persian antiquity, as well as in modern Iran, it is known as the دریای خزر, Daryā-e Khazar, ancient Arabic sources refer to it as Baḥr Gīlān meaning the Gilan Sea. Turkic languages refer to the lake as Khazar Sea, in Turkmen, the name is Hazar deňizi, in Azeri, it is Xəzər dənizi, and in modern Turkish, it is Hazar denizi. An exception is Kazakh, where it is called Каспий теңізі, old Russian sources call it the Khvalyn or Khvalis Sea after the name of Khwarezmia. In modern Russian, it is called Каспи́йское мо́ре, Kaspiyskoye more, the Caspian Sea, like the Black Sea, Namak Lake, and Lake Urmia, is a remnant of the ancient Paratethys Sea. It became landlocked about 5.5 million years ago due to tectonic uplift and a fall in sea level. Due to the current inflow of water, the Caspian Sea is a freshwater lake in its northern portions, and is most saline on the Iranian shore. Currently, the salinity of the Caspian is one third that of Earths oceans. The Caspian Sea is the largest inland body of water in the world, the coastlines of the Caspian are shared by Azerbaijan, Iran, Kazakhstan, Russia, and Turkmenistan. The Caspian is divided into three distinct regions, the Northern, Middle, and Southern Caspian
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Greater Caucasus
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Greater Caucasus is the major mountain range of the Caucasus Mountains. In the drier Eastern Caucasus, the mountains are mostly treeless, the watershed of the Caucasus is also considered the boundary between Eastern Europe and Western Asia. The border of Russia with Georgia and Azerbaijan runs along the most of the Caucasus length, the Georgian Military Road and Trans-Caucasus Highway traverse this mountain range at altitudes of up to 3,000 metres. The border between Russia and Georgia still follows the watershed almost exactly, while Azerbaijan in its northeastern corner has five districts north of the watershed, mount Elbrus,5,642 m, 43°21′18″N 42°26′21″E is the highest mountain in Europe
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Europe
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Europe is a continent that comprises the westernmost part of Eurasia. Europe is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, yet the non-oceanic borders of Europe—a concept dating back to classical antiquity—are arbitrary. Europe covers about 10,180,000 square kilometres, or 2% of the Earths surface, politically, Europe is divided into about fifty sovereign states of which the Russian Federation is the largest and most populous, spanning 39% of the continent and comprising 15% of its population. Europe had a population of about 740 million as of 2015. Further from the sea, seasonal differences are more noticeable than close to the coast, Europe, in particular ancient Greece, was the birthplace of Western civilization. The fall of the Western Roman Empire, during the period, marked the end of ancient history. Renaissance humanism, exploration, art, and science led to the modern era, from the Age of Discovery onwards, Europe played a predominant role in global affairs. Between the 16th and 20th centuries, European powers controlled at times the Americas, most of Africa, Oceania. The Industrial Revolution, which began in Great Britain at the end of the 18th century, gave rise to economic, cultural, and social change in Western Europe. During the Cold War, Europe was divided along the Iron Curtain between NATO in the west and the Warsaw Pact in the east, until the revolutions of 1989 and fall of the Berlin Wall. In 1955, the Council of Europe was formed following a speech by Sir Winston Churchill and it includes all states except for Belarus, Kazakhstan and Vatican City. Further European integration by some states led to the formation of the European Union, the EU originated in Western Europe but has been expanding eastward since the fall of the Soviet Union in 1991. The European Anthem is Ode to Joy and states celebrate peace, in classical Greek mythology, Europa is the name of either a Phoenician princess or of a queen of Crete. The name contains the elements εὐρύς, wide, broad and ὤψ eye, broad has been an epithet of Earth herself in the reconstructed Proto-Indo-European religion and the poetry devoted to it. For the second part also the divine attributes of grey-eyed Athena or ox-eyed Hera. The same naming motive according to cartographic convention appears in Greek Ανατολή, Martin Litchfield West stated that phonologically, the match between Europas name and any form of the Semitic word is very poor. Next to these there is also a Proto-Indo-European root *h1regʷos, meaning darkness. Most major world languages use words derived from Eurṓpē or Europa to refer to the continent, in some Turkic languages the originally Persian name Frangistan is used casually in referring to much of Europe, besides official names such as Avrupa or Evropa
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Asia
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Asia covers an area of 44,579,000 square kilometres, about 30% of Earths total land area and 8. 7% of the Earths total surface area. The continent, which has long been home to the majority of the population, was the site of many of the first civilizations. Asia is notable for not only its large size and population. In general terms, Asia is bounded on the east by the Pacific Ocean, on the south by the Indian Ocean, the western boundary with Europe is a historical and cultural construct, as there is no clear physical and geographical separation between them. The most commonly accepted boundaries place Asia to the east of the Suez Canal, the Ural River, and the Ural Mountains, and south of the Caucasus Mountains, China and India alternated in being the largest economies in the world from 1 to 1800 A. D. The accidental discovery of America by Columbus in search for India demonstrates this deep fascination, the Silk Road became the main East-West trading route in the Asian hitherland while the Straits of Malacca stood as a major sea route. Asia has exhibited economic dynamism as well as robust population growth during the 20th century, given its size and diversity, the concept of Asia—a name dating back to classical antiquity—may actually have more to do with human geography than physical geography. Asia varies greatly across and within its regions with regard to ethnic groups, cultures, environments, economics, historical ties, the boundary between Asia and Africa is the Red Sea, the Gulf of Suez, and the Suez Canal. This makes Egypt a transcontinental country, with the Sinai peninsula in Asia, the border between Asia and Europe was historically defined by European academics. In Sweden, five years after Peters death, in 1730 Philip Johan von Strahlenberg published a new atlas proposing the Urals as the border of Asia, the Russians were enthusiastic about the concept, which allowed them to keep their European identity in geography. Tatishchev announced that he had proposed the idea to von Strahlenberg, the latter had suggested the Emba River as the lower boundary. Over the next century various proposals were made until the Ural River prevailed in the mid-19th century, the border had been moved perforce from the Black Sea to the Caspian Sea into which the Ural River projects. The border between the Black Sea and the Caspian is usually placed along the crest of the Caucasus Mountains, the border between Asia and the loosely defined region of Oceania is usually placed somewhere in the Malay Archipelago. The terms Southeast Asia and Oceania, devised in the 19th century, have had several different geographic meanings since their inception. The chief factor in determining which islands of the Malay Archipelago are Asian has been the location of the possessions of the various empires there. Lewis and Wigen assert, The narrowing of Southeast Asia to its present boundaries was thus a gradual process, Asia is larger and more culturally diverse than Europe. It does not exactly correspond to the borders of its various types of constituents. From the time of Herodotus a minority of geographers have rejected the three-continent system on the grounds there is no or is no substantial physical separation between them
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Philip Johan von Strahlenberg
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Philip Johan von Strahlenberg was a Swedish officer and geographer of German origin who made important contributions to the cartography of Russia. He was the first geographer, who came up with the Ural border idea, then later he fixed it with the approval of Russian Tzar. Strahlenberg was born in Stralsund, which belonged to Sweden. He joined the Swedish army in 1694 and was promoted captain in 1703, in 1707, he was ennobled and took the name von Strahlenberg. Taking part in the Great Northern War, he was captured by the victorious Russian forces during the Battle of Poltava in 1709, as a prisoner of war, he was sent to Tobolsk, where he lived from 1711 to 1721. During this time, he studied the geography of Siberia and the anthropology, languages, after returning to Stockholm in 1730, he published his book Das Nord- und Ostliche Theil von Europa und Asia with the results of his studies. The book was received and soon translated into English, French. As part of his book, Strahlenberg and Johan Anton von Matérn drew new maps of all of Russia - a formidable task in itself and he also suggested a new border between the continents of Europe and Asia in Russian territory. Vasily Tatischev claimed that it was at his suggestion that Strahlenberg adopted the idea, see Boundaries between continents for the current political and geographical debates about the Europe-Asia border. Strahlenbergs book also deals with the languages and customs of the Tartars, Yakuts, Chuvash, Crimean Tartars, Uzbeks, Bashkirs, Kyrgyz, Turkmen Tartars. He also compiled and published a Kalmyk-German dictionary, subsequently issued with French, in writing about the shamanic rituals of the indigenous peoples of Siberia, he noted their use of the fly agaric mushroom. In his later years, Strahlenberg wrote an extensive treatise on the history of Russia. The asteroid Strahlenberg is named after him
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Ural Mountains
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The mountain range forms part of the conventional boundary between the continents of Europe and Asia. Vaygach Island and the islands of Novaya Zemlya form a continuation of the chain to the north into the Arctic Ocean. The mountains lie within the Ural geographical region and significantly overlap with the Ural Federal District and they have rich resources, including metal ores, coal, precious and semi-precious stones. Since the 18th century the mountains have contributed significantly to the sector of the Russian economy. As attested by Sigismund von Herberstein, in the 16th century Russians called the range by a variety of names derived from the Russian words for rock and it might have been a borrowing from either Turkic stone belt, or Ob-Ugric. From the 13th century, in Bashkortostan there has been a legend about a hero named Ural and he sacrificed his life for the sake of his people and they poured a stone pile over his grave, which later turned into the Ural Mountains. Possibilities include Bashkir үр elevation, upland or Mansi ур ала mountain peak, top of the mountain, tatischev believes that this oronym is set to belt and associates it with the Turkic verb oralu- gird. Dobrodomov suggests a transition from Aral to Ural explained on the basis of ancient Bulgar-Chuvash dialects, hawks believes that the name goes back to the Bashkir folklore Ural-Batyr. Shumilov suggested a Mongolian origin, Khural Uul, that is, the Evenk geographical term era mountain has also been theorized. Finno-Ugrist scholars consider Ural deriving from the Mansi word urr meaning a mountain, turkologists, on the other hand, have achieved majority support for their assertion that ural in Tatar means a belt, and recall that an earlier name for the range was stone belt. During the next few centuries Novgorodians engaged in fur trading with the population and collected tribute from Yugra and Great Perm. The rivers Chusovaya and Belaya were first mentioned in the chronicles of 1396 and 1468, in 1430 the town of Solikamsk was founded on the Kama at the foothills of the Ural, where salt was produced in open pans. Ivan III of Moscow captured Perm, Pechora and Yugra from the declining Novgorod Republic in 1472, with the excursions of 1483 and 1499–1500 across the Ural Moscow managed to subjugate Yugra completely. The Middle and Southern Ural were still largely unavailable and unknown to the Russian or Western European geographers, the Stroganovs land provided the staging ground for Yermaks incursion into Siberia. Yermak crossed the Ural from the Chusovaya to the Tagil around 1581, in 1597 Babinovs road was built across the Ural from Solikamsk to the valley of the Tura, where the town of Verkhoturye was founded in 1598. Customs was established in Verkhoturye shortly thereafter and the road was made the legal connection between European Russia and Siberia for a long time. In 1648 the town of Kungur was founded at the foothills of the Middle Ural. During the 17th century the first deposits of iron and copper ores, mica, gemstones, iron and copper smelting works emerged
41.
Council of Europe
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The Council of Europe is an international organisation focused on protecting human rights, democracy, rule of law in Europe and promoting European culture. Founded in 1949, it has 47 member states, covers approximately 820 million people, No country has ever joined the EU without first belonging to the Council of Europe. Unlike the EU, the Council of Europe cannot make binding laws, the best known body of the Council of Europe is the European Court of Human Rights, which enforces the European Convention on Human Rights. The Commissioner for Human Rights is an independent institution within the Council of Europe, mandated to promote awareness of, the Secretary General heads the secretariat of the organisation. Other major CoE bodies include the European Directorate for the Quality of Medicines, the headquarters of the Council of Europe are in Strasbourg, France. English and French are its two official languages, the Committee of Ministers, the Parliamentary Assembly and the Congress also use German, Italian, Russian, and Turkish for some of their work. In a speech at the University of Zurich on 19 September 1946, Sir Winston Churchill called for a kind of United States of Europe and he had spoken of a Council of Europe as early as 1943 in a radio broadcast. There were two schools of thought competing, some favoured a classical international organisation with representatives of governments, both approaches were finally combined through the creation of the Committee of Ministers and the Parliamentary Assembly under the Statute of the Council of Europe. The Council of Europe was founded on 5 May 1949 by the Treaty of London and those conventions and decisions are developed by the member states working together at the Council of Europe. Both organizations function as concentric circles around the foundations for European co-operation and harmony. The European Union could be seen as the circle with a much higher level of integration through the transfer of powers from the national to the EU level. The Council of Europe and the European Union, different roles, Council of Europe conventions/treaties are also open for signature to non-member states, thus facilitating equal co-operation with countries outside Europe. The Convention created the European Court of Human Rights in Strasbourg, the Court supervises compliance with the European Convention on Human Rights and thus functions as the highest European court. It is to court that Europeans can bring cases if they believe that a member country has violated their fundamental rights. The various activities and achievements of the Council of Europe can be found in detail on its official website, Promotion of the right to education under Article 2 of the first Protocol to the European Convention on Human Rights and several conventions on the recognition of university studies and diplomas. Promotion of fair sport through the Anti-Doping Convention Promotion of European youth exchanges and co-operation through European Youth Centres in Strasbourg and Budapest, Promotion of the quality of medicines throughout Europe by the European Directorate for the Quality of Medicines and its European Pharmacopoeia. The institutions of the Council of Europe are, The Secretary General, mr Thorbjørn Jagland, the former Prime Minister of Norway was elected Secretary General of the Council of Europe in September 2009. In June 2014, he was re-elected, and his term in office commenced on 1 October 2014
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Caucasus Mountains
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The Caucasus Mountains are a mountain system in Eurasia between the Black Sea and the Caspian Sea in the Caucasus region. The Caucasus Mountains include the Greater Caucasus in the north and Lesser Caucasus in the south, the Greater Caucasus runs west-northwest to east-southeast, from the Caucasian Natural Reserve in the vicinity of Sochi on the northeastern shore of the Black Sea nearly to Baku on the Caspian Sea. The Lesser Caucasus runs parallel to the Greater about 100 km south, the Greater and Lesser Caucasus ranges are connected by the Likhi Range, and to the west and east of the Likhi Range lie the Colchis Plain and the Kur-Araz Lowland. The Meskheti Range is a part of the Lesser Caucasus system, in the southeast the Aras River separates the Lesser Caucasus from the Talysh Mountains which straddle the border of southeastern Azerbaijan and Iran. The highest peak in the Caucasus range is Mount Elbrus in the Greater Caucasus, Mountains near Sochi hosted part of the 2014 Winter Olympics. Geologically, the Caucasus Mountains belong to a system that extends from southeastern Europe into Asia, the Greater Caucasus Mountains are mainly composed of Cretaceous and Jurassic rocks with the Paleozoic and Precambrian rocks in the higher regions. Some volcanic formations are found throughout the range, on the other hand, the Lesser Caucasus Mountains are formed predominantly of the Paleogene rocks with a much smaller portion of the Jurassic and Cretaceous rocks. The Caucasus Mountains formed largely as the result of a plate collision between the Arabian plate moving northwards with respect to the Eurasian plate. As this happened, the rocks that had been deposited in this basin from the Jurassic to the Miocene were folded to form the Greater Caucasus Mountains. This collision also caused the uplift and the Cenozoic volcanic activity in the Lesser Caucasus Mountains, the entire region is regularly subjected to strong earthquakes from this activity. While the Greater Caucasus Mountains have a mainly folded sedimentary structure, the Javakheti Volcanic Plateau in Georgia and the surrounding volcanic ranges which extend well into central Armenia are some of the youngest features of the region. The Kazbek is no active, but the Elbrus erupted in postglacial times. Contemporary seismic activity is a prominent feature of the region, reflecting active faulting, clusters of seismicity occur in Dagestan and in northern Armenia. Many devastating earthquakes have been documented in historical times, including the Spitak earthquake in December 1988 which destroyed the Gyumri-Vanadzor region of Armenia, europes highest mountain is Mount Elbrus 5,642 m in the Caucasus Mountains. Elbrus is 832 m higher than Mont Blanc, the highest peak in the Alps at 4,810 m, the Caucasus Mountains are defined as the continental divide between Asia and Europe for the region between the Black and Caspian Seas. The table below lists some of the highest peaks of the Caucasus, with the exception of Shkhara, the heights are taken from Soviet 1,50,000 mapping. There are higher and more prominent, but nameless, peaks than some of the peaks included below, the climate of the Caucasus varies both vertically and horizontally. Temperature generally decreases as elevation rises, average annual temperature in Sukhumi, Abkhazia at sea level is 15 °C while on the slopes of Mt. Kazbek at an elevation of 3,700 metres, average annual temperature falls to−6.1 °C
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Landslide
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A landslide, also known as a landslip, is a form of mass wasting that includes a wide range of ground movements, such as rockfalls, deep failure of slopes, and shallow debris flows. Landslides can occur underwater, called a submarine landslide, coastal, although the action of gravity is the primary driving force for a landslide to occur, there are other contributing factors affecting the original slope stability. Typically, pre-conditional factors build up specific sub-surface conditions that make the prone to failure. Landslides occur when the changes from a stable to an unstable condition. A change in the stability of a slope can be caused by a number of factors, slope material that becomes saturated with water may develop into a debris flow or mud flow. The resulting slurry of rock and mud may pick up trees, houses and cars, debris flow is often mistaken for flash flood, but they are entirely different processes. Muddy-debris flows in alpine areas cause severe damage to structures and infrastructure, muddy-debris flows can start as a result of slope-related factors and shallow landslides can dam stream beds, resulting in temporary water blockage. As the impoundments fail, an effect may be created, with a remarkable growth in the volume of the flowing mass. The solid–liquid mixture can reach densities of up to 2,000 kg/m3, for a small basin in the Italian Alps affected by a debris flow, estimated a peak discharge of 750 m3/s for a section located in the middle stretch of the main channel. At the same section, the maximum foreseeable water discharge, was 19 m3/s. Earthflows are downslope, viscous flows of saturated, fine-grained materials, typically, they can move at speeds from 0.17 to 20 km/h. Though these are a lot like mudflows, overall they are slow moving and are covered with solid material carried along by flow from within. They are different from fluid flows which are more rapid, clay, fine sand and silt, and fine-grained, pyroclastic material are all susceptible to earthflows. The velocity of the earthflow is all dependent on how much content is in the flow itself, if there is more water content in the flow. This thereby creates a bulging lobe which advances with a slow, as these lobes spread out, drainage of the mass increases and the margins dry out, thereby lowering the overall velocity of the flow. This process causes the flow to thicken, the bulbous variety of earthflows are not that spectacular, but they are much more common than their rapid counterparts. They develop a sag at their heads and are derived from the slumping at the source. Earthflows occur much more during periods of precipitation, which saturates the ground
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Hydroelectricity
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Hydroelectricity is electricity produced from hydropower. In 2015 hydropower generated 16. 6% of the total electricity and 70% of all renewable electricity. Hydropower is produced in 150 countries, with the Asia-Pacific region generating 33 percent of global hydropower in 2013, China is the largest hydroelectricity producer, with 920 TWh of production in 2013, representing 16.9 percent of domestic electricity use. The cost of hydroelectricity is relatively low, making it a source of renewable electricity. The hydro station consumes no water, unlike coal or gas plants, the average cost of electricity from a hydro station larger than 10 megawatts is 3 to 5 U. S. cents per kilowatt-hour. With a dam and reservoir it is also a source of electricity since the amount produced by the station can be changed up or down very quickly to adapt to changing energy demands. Once a hydroelectric complex is constructed, the project produces no direct waste, Hydropower has been used since ancient times to grind flour and perform other tasks. In the mid-1770s, French engineer Bernard Forest de Bélidor published Architecture Hydraulique which described vertical-, by the late 19th century, the electrical generator was developed and could now be coupled with hydraulics. The growing demand for the Industrial Revolution would drive development as well, in 1878 the worlds first hydroelectric power scheme was developed at Cragside in Northumberland, England by William George Armstrong. It was used to power an arc lamp in his art gallery. The old Schoelkopf Power Station No.1 near Niagara Falls in the U. S. side began to produce electricity in 1881. The first Edison hydroelectric power station, the Vulcan Street Plant, began operating September 30,1882, in Appleton, Wisconsin, by 1886 there were 45 hydroelectric power stations in the U. S. and Canada. By 1889 there were 200 in the U. S. alone, at the beginning of the 20th century, many small hydroelectric power stations were being constructed by commercial companies in mountains near metropolitan areas. Grenoble, France held the International Exhibition of Hydropower and Tourism with over one million visitors, by 1920 as 40% of the power produced in the United States was hydroelectric, the Federal Power Act was enacted into law. The Act created the Federal Power Commission to regulate hydroelectric power stations on federal land, as the power stations became larger, their associated dams developed additional purposes to include flood control, irrigation and navigation. Federal funding became necessary for development and federally owned corporations, such as the Tennessee Valley Authority. Hydroelectric power stations continued to become larger throughout the 20th century, Hydropower was referred to as white coal for its power and plenty. Hoover Dams initial 1,345 MW power station was the worlds largest hydroelectric station in 1936
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Kura (Caspian Sea)
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The Kura is an east-flowing river south of the Greater Caucasus Mountains which drains the southern slopes of the Greater Caucasus east into the Caspian Sea. It also drains the north side of the Lesser Caucasus while its main tributary, starting in northeastern Turkey, it flows through Turkey to Georgia, then to Azerbaijan, where it receives the Aras as a right tributary, and enters the Caspian Sea. The total length of the river is 1,515 kilometres, people have inhabited the Caucasus region for thousands of years, and first established agriculture in the Kura Valley over 4,500 years ago. Large, complex civilizations eventually grew up on the river, but by 1200 CE, most were reduced to ruin by natural disasters, the increasing human use, and eventual damage, of the watershed’s forests and grasslands contributed to a rising intensity of floods through the 20th century. In the 1950s, the Soviet Union started building many dams, previously navigable up to Tbilisi in Georgia, it is now much slower and shallower, as its power has been harnessed by hydroelectric power stations. The river is now polluted by major industrial centers like Tbilisi. The name Kura is related to the name of Cyrus the Great, emperor of Persia, The Georgian name of Kura is Mtkvari, the name Kura was adopted first by the Russians and later by European cartographers. In some definitions of Europe, the Kura River defines the borderline between Europe and Asia and it rises in northeastern Turkey in a small valley in the Kars Upland of the Lesser Caucasus. It flows west, then north and east past Ardahan, and it arcs to the northwest, then into a canyon near Akhaltsikhe where it starts to run northeast in a gorge for about 75 kilometres, spilling out of the mountains near Khashuri. The Kura then empties into Mingachevir reservoir, the largest body of water in Azerbaijan, the Iori and Alazani rivers formerly joined the Kura, but their mouths are now submerged under the lake. The entirety of Armenia and most of Azerbaijan are drained by the Kura River, also in the Kura watershed are Turkey, Georgia, and a bit of northern Iran. Most of the change in the river occurs within the first 200 kilometres. The lower part of the flows through the Kura-Aras Lowland. The Kura is the third largest, after the Volga and Ural, before 1998, the river flowed all the way to the tip of the delta, where it discharged into the Caspian. In that year, the river escaped its channel and started to flow off to the west, the course change is believed to be the result of a rise in the level of the Caspian Sea coupled with a major flood of the Kura. About 174 kilometres of the river is in Turkey,435 kilometres in Georgia, at the confluence with the Aras River, the drainage area of the tributary is actually larger than the Kura by about 4%, and it is also longer. However, because of the arid conditions and equally intensive water use. About 52% of the flow comes from snowmelt and glaciers, 30% comes from groundwater seepage
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Rioni River
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The Rioni or Rion River is the main river of western Georgia. It originates in the Caucasus Mountains, in the region of Racha and flows west to the Black Sea, the city of Kutaisi, once the ancient city of Colchis, lies on its banks. It drains the western Transcaucasus into the Black Sea while its sister, the Rioni is the longest river wholly within the borders of Georgia. The river is 327 kilometres long, and its basin covers about 13,400 square kilometres. It starts on the slopes of the Caucasus Mountains at 2,960 metres above sea level
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Svaneti
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Svaneti or Svanetia is a historic province in Georgia, in the northwestern part of the country. It is inhabited by the Svans, a subgroup of Georgians. Situated on the slopes of the central Caucasus Mountains and surrounded by 3, 000–5,000 meter peaks. Four of the 10 highest peaks of the Caucasus are located in the region, the highest mountain in Georgia, Mount Shkhara at 5,201 meters, is located in the province. Prominent peaks include Tetnuldi, Shota Rustaveli, Mount Ushba, Ailama, as well as Lalveri, Latsga and others. Historical Svaneti also included the Kodori Gorge in the rebel province of Abkhazia. Writing in 1848, Bodenstedt said that Upper Svaneti could only be reached by a footpath which was closed in winter. The landscape of Svaneti is dominated by mountains that are separated by deep gorges, most of the region which lies below 1,800 meters above sea level is covered by mixed and coniferous forests. The forest zone is made up of species such as spruce, fir, beech, oak. Other species that are common but may still be found in some areas include chestnut, birch, maple, pine. The zone which extends from 1,800 meters to roughly about 3,000 meters above sea level consists of alpine meadows, eternal snows and glaciers take over in areas that are over 3,000 meters above sea level. The region is notable for its glaciers and picturesque summits, Svanetis signature peak is probably Mount Ushba which towers over the Inguri Gorge and can be seen from many parts of the region. The climate of Svaneti is humid and is influenced by the air coming in from the Black Sea throughout the year. Average temperatures and precipitation vary considerably with elevation, annual precipitation ranges between 1000 and 3200 mm. The highest amount of falls on the Greater Caucasus Mountains. The region is characterized by heavy snowfall in the winter. Snow cover may reach 5 meters in some areas, in general, the lowest regions of Svaneti are characterized by long, warm summers and relatively cold and snowy winters. Middle altitudes experience relatively warm summers and cold winters, areas above 2000 meters above sea level lie within a zone that experiences short, cool summers and long and cold winters
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This article incorporates public domain material from the Library of Congress Country Studies website http://lcweb2.loc.gov/frd/cs/.
This article incorporates 