Antarctica is Earth's southernmost continent. It contains the geographic South Pole and is situated in the Antarctic region of the Southern Hemisphere entirely south of the Antarctic Circle, is surrounded by the Southern Ocean. At 14,200,000 square kilometres, it is the fifth-largest continent. For comparison, Antarctica is nearly twice the size of Australia. About 98% of Antarctica is covered by ice that averages 1.9 km in thickness, which extends to all but the northernmost reaches of the Antarctic Peninsula. Antarctica, on average, is the coldest and windiest continent, has the highest average elevation of all the continents. Most of Antarctica is a polar desert, with annual precipitation of only 200 mm along the coast and far less inland; the temperature in Antarctica has reached −89.2 °C, though the average for the third quarter is −63 °C. Anywhere from 1,000 to 5,000 people reside throughout the year at research stations scattered across the continent. Organisms native to Antarctica include many types of algae, fungi, plants and certain animals, such as mites, penguins and tardigrades.
Vegetation, where it occurs, is tundra. Antarctica is noted as the last region on Earth in recorded history to be discovered, unseen until 1820 when the Russian expedition of Fabian Gottlieb von Bellingshausen and Mikhail Lazarev on Vostok and Mirny sighted the Fimbul ice shelf; the continent, remained neglected for the rest of the 19th century because of its hostile environment, lack of accessible resources, isolation. In 1895, the first confirmed. Antarctica is a de facto condominium, governed by parties to the Antarctic Treaty System that have consulting status. Twelve countries signed the Antarctic Treaty in 1959, thirty-eight have signed it since then; the treaty prohibits military activities and mineral mining, prohibits nuclear explosions and nuclear waste disposal, supports scientific research, protects the continent's ecozone. Ongoing experiments are conducted by more than 4,000 scientists from many nations; the name Antarctica is the romanised version of the Greek compound word ἀνταρκτική, feminine of ἀνταρκτικός, meaning "opposite to the Arctic", "opposite to the north".
Aristotle wrote in his book Meteorology about an Antarctic region in c. 350 BC Marinus of Tyre used the name in his unpreserved world map from the 2nd century CE. The Roman authors Hyginus and Apuleius used for the South Pole the romanised Greek name polus antarcticus, from which derived the Old French pole antartike attested in 1270, from there the Middle English pol antartik in a 1391 technical treatise by Geoffrey Chaucer. Before acquiring its present geographical connotations, the term was used for other locations that could be defined as "opposite to the north". For example, the short-lived French colony established in Brazil in the 16th century was called "France Antarctique"; the first formal use of the name "Antarctica" as a continental name in the 1890s is attributed to the Scottish cartographer John George Bartholomew. The long-imagined south polar continent was called Terra Australis, sometimes shortened to'Australia' as seen in a woodcut illustration titled Sphere of the winds, contained in an astrological textbook published in Frankfurt in 1545.
Although the longer Latin phrase was better known, the shortened name Australia was used in Europe's scholarly circles. In the nineteenth century, the colonial authorities in Sydney removed the Dutch name from New Holland. Instead of inventing a new name to replace it, they took the name Australia from the south polar continent, leaving it nameless for some eighty years. During that period, geographers had to make do with clumsy phrases such as "the Antarctic Continent", they searched for a more poetic replacement, suggesting various names such as Antipodea. Antarctica was adopted in the 1890s. Antarctica has no indigenous population, there is no evidence that it was seen by humans until the 19th century. However, in February 1775, during his second voyage, Captain Cook called the existence of such a polar continent "probable" and in another copy of his journal he wrote:" believe it and it's more than probable that we have seen a part of it". However, belief in the existence of a Terra Australis—a vast continent in the far south of the globe to "balance" the northern lands of Europe and North Africa—had prevailed since the times of Ptolemy in the 1st century AD.
In the late 17th century, after explorers had found that South America and Australia were not part of the fabled "Antarctica", geographers believed that the continent was much larger than its actual size. Integral to the story of the origin of Antarctica's name is that it was not named Terra Australis—this name was given to Australia instead, because of the misconception that no significant landmass could exist further south. Explorer Matthew Flinders, in particular, has been credited with popularising the transfer of the name Terra Australis to Australia, he justified the titling of his book A Voyage to Terra Australis by writing in the introduction: There is no probability, that any other detached body of land, of nearly equal extent, will be found in a more southern latitude.
Uzbekistan also the Republic of Uzbekistan, is a landlocked country in Central Asia. The sovereign state is a secular, unitary constitutional republic, comprising 12 provinces, one autonomous republic, a capital city. Uzbekistan is bordered by five landlocked countries: Kazakhstan to the north. Along with Liechtenstein, it is one of the world's only two doubly landlocked countries. What is now Uzbekistan was in ancient times part of the Iranian-speaking region of Transoxiana and Turan; the first recorded settlers were Eastern Iranian nomads, known as Scythians, who founded kingdoms in Khwarezm, Sogdia and Margiana. The area was incorporated into the Persian Empire and, after a period of Macedonian Greek rule, was ruled by the Persian Parthian Empire and by the Sasanian Empire, until the Muslim conquest of Persia in the 7th century; the Muslim conquest in the 7th century converted the majority of the population, including the local ruling classes, into adherents of Islam. During this period, cities such as Samarkand and Bukhara began to grow rich from the Silk Road.
The local Khwarezmian dynasty, Central Asia as a whole, were decimated by the Mongol invasion in the 13th century. After the Mongol Conquests, the area became dominated by Turkic peoples; the city of Shahrisabz was the birthplace of the Turco-Mongol warlord Timur known as one of Genghis Khan's grandchildren, who in the 14th century established the Timurid Empire and was proclaimed the Supreme Emir of Turan with his capital in Samarkand. The area was conquered by Uzbek Shaybanids in the 16th century, moving the centre of power from Samarkand to Bukhara; the region was split into three states: Khanate of Khiva, Khanate of Kokand, Emirate of Bukhara. It was incorporated into the Russian Empire during the 19th century, with Tashkent becoming the political center of Russian Turkestan. In 1924, after national delimitation, the constituent republic of the Soviet Union known as the Uzbek Soviet Socialist Republic was created. Following the breakup of the Soviet Union, it declared independence as the Republic of Uzbekistan on 31 August 1991.
Uzbekistan has a diverse cultural heritage due to strategic location. Its first major official language is Uzbek, a Turkic language written in the Latin alphabet and spoken natively by 85% of the population. Russian has widespread use as a governmental language. Uzbeks constitute 81% of the population, followed by Russians, Tajiks and others. Muslims constitute 79% of the population while 5% of the population follow Russian Orthodox Christianity, 16% of the population follow other religions or are non-religious. A majority of Uzbeks are non-denominational Muslims. Uzbekistan is a member of the CIS, OSCE, UN, the SCO. While a democratic republic, by 2008 non-governmental human rights organizations defined Uzbekistan as "an authoritarian state with limited civil rights". Following the death of Islam Karimov in 2016, the second president, Shavkat Mirziyoyev, started a new course, described as a A Quiet Revolution and Revolution from Above, he stated he intended to abolish cotton slavery, systematic use of child labour, exit visas, to introduce a tax reform, create four new free economic zones, as well as amnestied some political prisoners.
The relations with neighboring countries of Tajikistan and Afghanistan drastically improved. However, the Amnesty International report on human rights in the country for 2017/2018 described continued repressive measures, including forced labour in cotton harvesting, restrictions on movements of'freed' prisoners; the Uzbek economy is in a gradual transition to the market economy, with foreign trade policy being based on import substitution. In September 2017, the country's currency became convertible in the market rates. Uzbekistan is a major exporter of cotton; the country operates the largest open-pit gold mine in the world. With the gigantic power-generation facilities of the Soviet era and an ample supply of natural gas, Uzbekistan has become the largest electricity producer in Central Asia. Renewable energy constitutes more than 23% of the country's energy sector, with hydroelectricity and solar energy having 21.4% and 2% respectively. Uzbekistan has an area of 447,400 square kilometres, it is the 56th largest country in the 42nd by population.
Among the CIS countries, it is the 2nd largest by population. Uzbekistan lies between latitudes 37° and 46° N, longitudes 56° and 74° E, it stretches 1,425 kilometres from west to east and 930 kilometres from north to south. Bordering Kazakhstan and the Aralkum Desert to the north and northwest and Afghanistan to the southwest, Tajikistan to the southeast, Kyrgyzstan to the northeast, Uzbekistan is one of the largest Central Asian states and the only Central Asian state to border all the other four. Uzbekistan shares a short border with Afghanistan to the south. Uzbekistan is a landlocked country, it is one of two doubly landlocked countries in the world (that is, a country completel
The Arctic Circle is one of the two polar circles and the most northerly of the five major circles of latitude as shown on maps of Earth. It marks the northernmost point at which the centre of the noon sun is just visible on the December solstice and the southernmost point at which the centre of the midnight sun is just visible on the June solstice; the region north of this circle is known as the Arctic, the zone just to the south is called the Northern Temperate Zone. As seen from the Arctic, the Sun is above the horizon for 24 continuous hours at least once per year and below the horizon for 24 continuous hours at least once per year; this is true in the Antarctic region, south of the equivalent Antarctic Circle. The position of the Arctic Circle is not fixed, its latitude depends on the Earth's axial tilt, which fluctuates within a margin of more than 2° over a 41,000-year period, due to tidal forces resulting from the orbit of the Moon. The Arctic Circle is drifting northwards at a speed of about 15 m per year.
The word arctic comes from the Greek word ἀρκτικός and that from the word ἄρκτος. The Arctic Circle is the southernmost latitude in the Northern Hemisphere at which the centre of the sun can remain continuously above or below the horizon for twenty-four hours. Directly on the Arctic Circle these events occur, in principle once per year: at the June and December solstices, respectively. However, because of atmospheric refraction and mirages, because the sun appears as a disk and not a point, part of the midnight sun may be seen on the night of the northern summer solstice up to about 50 minutes south of the Arctic Circle; that is true at sea level. Only four million people live north of the Arctic Circle due to the climate. Tens of thousands of years ago, waves of people migrated from eastern Siberia across the Bering Strait into North America to settle; the largest communities north of the Arctic Circle are situated in Russia and Sweden: Murmansk, Tromsø, Kiruna. Rovaniemi in Finland is the largest settlement in the immediate vicinity of the Arctic Circle, lying 6 km south of the line.
In contrast, the largest North American community north of the Arctic Circle, has 5,000 inhabitants. Of the Arctic communities in Canada and the United States, Alaska is the largest settlement with about 4,000 inhabitants; the Arctic Circle is 16,000 km long. The area north of the Circle is about 20,000,000 km2 and covers 4% of Earth's surface; the Arctic Circle passes through the Arctic Ocean, the Scandinavian Peninsula, North Asia, Northern America, Greenland. The land within the Arctic Circle is divided among eight countries: Norway, Finland, the United States, Canada and Iceland; the climate inside the Arctic Circle is cold, but the coastal areas of Norway have a mild climate as a result of the Gulf Stream, which makes the ports of northern Norway and northwest Russia ice-free all year long. In the interior, summers can be quite warm, while winters are cold. For example, summer temperatures in Norilsk, Russia will sometimes reach as high as 30 °C, while the winter temperatures fall below −50 °C.
Starting at the prime meridian and heading eastwards, the Arctic Circle passes through: Terra Incognita: Exploration of the Canadian Arctic—Historical essay about early expeditions to the Canadian Arctic, illustrated with maps and drawings Temporal Epoch Calculations ©2006 by James Q. Jacobs Download: Epoch v2009.xls Useful constants" See: Obliquity of the ecliptic
Pakistan the Islamic Republic of Pakistan, is a country in South Asia. It is the world’s sixth-most populous country with a population exceeding 212,742,631 people. In area, it is the 33rd-largest country. Pakistan has a 1,046-kilometre coastline along the Arabian Sea and Gulf of Oman in the south and is bordered by India to the east, Afghanistan to the west, Iran to the southwest, China in the far northeast, it is separated narrowly from Tajikistan by Afghanistan's Wakhan Corridor in the northwest, shares a maritime border with Oman. The territory that now constitutes Pakistan was the site of several ancient cultures and intertwined with the history of the broader Indian subcontinent; the ancient history involves the Neolithic site of Mehrgarh and the Bronze Age Indus Valley Civilisation, was home to kingdoms ruled by people of different faiths and cultures, including Hindus, Indo-Greeks, Turco-Mongols and Sikhs. The area has been ruled by numerous empires and dynasties, including the Persian Achaemenid Empire, Alexander III of Macedon, the Seleucid Empire, the Indian Maurya Empire, the Gupta Empire, the Arab Umayyad Caliphate, the Delhi Sultanate, the Mongol Empire, the Mughal Empire, the Afghan Durrani Empire, the Sikh Empire and, most the British Empire.
Pakistan is the only country to have been created in the name of Islam. It is an ethnically and linguistically diverse country, with a diverse geography and wildlife. A dominion, Pakistan adopted a constitution in 1956, becoming an Islamic republic. An ethnic civil war and Indian military intervention in 1971 resulted in the secession of East Pakistan as the new country of Bangladesh. In 1973, Pakistan adopted a new constitution which stipulated that all laws are to conform to the injunctions of Islam as laid down in the Quran and Sunnah. A regional and middle power, Pakistan has the sixth-largest standing armed forces in the world and is a nuclear power as well as a declared nuclear-weapons state, the second in South Asia and the only nation in the Muslim world to have that status. Pakistan has a semi-industrialised economy with a well-integrated agriculture sector and a growing services sector, it is ranked among the emerging and growth-leading economies of the world, is backed by one of the world's largest and fastest-growing middle class.
Pakistan's political history since independence has been characterized by periods of military rule, political instability and conflicts with India. The country continues to face challenging problems, including overpopulation, poverty and corruption. Pakistan is a member of the UN, the Shanghai Cooperation Organisation, the OIC, the Commonwealth of Nations, the SAARC and the Islamic Military Counter Terrorism Coalition; the name Pakistan means "land of the pure" in Urdu and Persian. It alludes to the word pāk meaning pure in Pashto; the suffix ـستان is a Persian word meaning the place of, recalls the synonymous Sanskrit word sthāna स्थान. The name of the country was coined in 1933 as Pakstan by Choudhry Rahmat Ali, a Pakistan Movement activist, who published it in his pamphlet Now or Never, using it as an acronym referring to the names of the five northern regions of British India: Punjab, Kashmir and Baluchistan; the letter i was incorporated to ease pronunciation. Some of the earliest ancient human civilisations in South Asia originated from areas encompassing present-day Pakistan.
The earliest known inhabitants in the region were Soanian during the Lower Paleolithic, of whom stone tools have been found in the Soan Valley of Punjab. The Indus region, which covers most of present day Pakistan, was the site of several successive ancient cultures including the Neolithic Mehrgarh and the Bronze Age Indus Valley Civilisation at Harappa and Mohenjo-Daro; the Vedic period was characterised by an Indo-Aryan culture. Multan was an important Hindu pilgrimage centre; the Vedic civilisation flourished in the ancient Gandhāran city of Takṣaśilā, now Taxila in the Punjab, founded around 1000 BCE. Successive ancient empires and kingdoms ruled the region: the Persian Achaemenid Empire, Alexander the Great's empire in 326 BCE and the Maurya Empire, founded by Chandragupta Maurya and extended by Ashoka the Great, until 185 BCE; the Indo-Greek Kingdom founded by Demetrius of Bactria included Gandhara and Punjab and reached its greatest extent under Menander, prospering the Greco-Buddhist culture in the region.
Taxila had one of the earliest universities and centres of higher education in the world, established during the late Vedic period in 6th century BCE. The school consisted of several monasteries without large dormitories or lecture halls where the religious instruction was provided on an individualistic basis; the ancient university was documented by the invading forces of Alexander the Great, "the like of which had not been seen in Greece," and was recorded by Chinese pilgrims in the 4th or 5th century CE. At its zenith, the Rai Dynasty of Sindh ruled the surrounding territories; the Pala Dynasty was the last Buddhist empire, under Dharmapala and Devapala, stretched across South Asia from what is now Bangladesh through Northern India to Pakistan. The Arab conqueror Muhammad bin Qasim conquered Sindh in 711 CE; the Pakistan government's official chronol
Baydaratskaya Bay or Baydarata Bay is a gulf in Russia, located in the southern part of the Kara Sea between the coastline of the Northern termination of the Ural Mountains and Yamal Peninsula. The length of the gulf is approx. 180 km, mouth width - 78 km, depth - up to 20 m. Surface water temperature is 5-6C during summertime; the gulf freezes up during winter. The rivers Baydarata, Yuribey and some others flow into the Baydarata Bay; the gulf contains the following larger islands: Torasovey Island, Litke Island, Levdiyev Island. The Yamal-Center gas pipeline is laid by Gazprom on the seabed across the bay from rich gas deposits of the Yamal. Breeding conditions for waders in Russian tundras in 1993 P. S. Tomkovich A description of the Baydaraka Gulf in the context of the construction of a gas pipeline—
An equator of a rotating spheroid is its zeroth circle of latitude. It is the imaginary line on the spheroid, equidistant from its poles, dividing it into northern and southern hemispheres. In other words, it is the intersection of the spheroid with the plane perpendicular to its axis of rotation and midway between its geographical poles. On Earth, the Equator is 21.3 % over land. Indonesia is the country straddling the greatest length of the equatorial line across both land and sea; the name is derived from medieval Latin word aequator, in the phrase circulus aequator diei et noctis, meaning ‘circle equalizing day and night’, from the Latin word aequare meaning ‘make equal’. The latitude of the Earth's equator is, by definition, 0° of arc; the Equator is one of the five notable circles of latitude on Earth. The Equator is the only line of latitude, a great circle — that is, one whose plane passes through the center of the globe; the plane of Earth's equator, when projected outwards to the celestial sphere, defines the celestial equator.
In the cycle of Earth's seasons, the equatorial plane runs through the Sun twice per year: on the equinoxes in March and September. To a person on Earth, the Sun appears to travel above the Equator at these times. Light rays from the Sun's center are perpendicular to Earth's surface at the point of solar noon on the Equator. Locations on the Equator experience the shortest sunrises and sunsets because the Sun's daily path is nearly perpendicular to the horizon for most of the year; the length of daylight is constant throughout the year. Earth bulges at the Equator. Sites near the Equator, such as the Guiana Space Centre in Kourou, French Guiana, are good locations for spaceports as they have a faster rotational speed than other latitudes. Since Earth rotates eastward, spacecraft must be launched eastward to take advantage of this Earth-boost of speed; the precise location of the Equator is not fixed. This effect must be accounted for in detailed geophysical measurements; the International Association of Geodesy and the International Astronomical Union have chosen to use an equatorial radius of 6,378.1366 kilometres.
This equatorial radius is in the 2003 and 2010 IERS Conventions. It is the equatorial radius used for the IERS 2003 ellipsoid. If it were circular, the length of the Equator would be 2π times the radius, namely 40,075.0142 kilometres. The GRS 80 as approved and adopted by the IUGG at its Canberra, Australia meeting of 1979 has an equatorial radius of 6,378.137 kilometres. The WGS 84, a standard for use in cartography and satellite navigation including GPS has an equatorial radius of 6,378.137 kilometres. For both GRS 80 and WGS 84, this results in a length for the Equator of 40,075.0167 km. The geographical mile is defined as one arc-minute of the Equator, so it has different values depending on which radius is assumed. For example, by WSG-84, the distance is 1,855.3248 metres, while by IAU-2000, it is 1,855.3257 metres. This is a difference of less than one millimetre over the total distance; the earth is modeled as a sphere flattened 0.336% along its axis. This makes the Equator 0.16% longer than a meridian.
The IUGG standard meridian is, to the nearest millimetre, 40,007.862917 kilometres, one arc-minute of, 1,852.216 metres, explaining the SI standardization of the nautical mile as 1,852 metres, more than 3 metres less than the geographical mile. The sea-level surface of the Earth is irregular, so the actual length of the Equator is not so easy to determine. Aviation Week and Space Technology on 9 October 1961 reported that measurements using the Transit IV-A satellite had shown the equatorial "diameter" from longitude 11° West to 169° East to be 1,000 feet greater than its "diameter" ninety degrees away; the Equator passes through the land of 11 countries. Starting at the Prime Meridian and heading eastwards, the Equator passes through: Despite its name, no part of Equatorial Guinea lies on the Equator. However, its island of Annobón is 155 km south of the Equator, the rest of the country lies to the north. Seasons result from the tilt of the Earth's axis compared to the plane of its revolution around the Sun.
Throughout the year the northern and southern hemispheres are alternately turned either toward or away from the sun depending on Earth's position in its orbit. The hemisphere turned toward the sun receives more sunlight and is in summer, while the other hemisphere receives less sun and is in winter. At the equinoxes, the Earth's axis
The Indian Ocean is the third largest of the world's oceanic divisions, covering 70,560,000 km2. It is bounded by Asia on the north, on the west by Africa, on the east by Australia, on the south by the Southern Ocean or, depending on definition, by Antarctica; the Indian Ocean is named after India. Called the Sindhu Mahasagara or the great sea of the Sindhu by the Ancient Indians, this ocean has been variously called Hindu Ocean, Indic Ocean, etc. in various languages. The Indian Ocean was known earlier as the Eastern Ocean; the term was still in use during the mid-18th century. The borders of the Indian Ocean, as delineated by the International Hydrographic Organization in 1953 included the Southern Ocean but not the marginal seas along the northern rim, but in 2000 the IHO delimited the Southern Ocean separately, which removed waters south of 60°S from the Indian Ocean, but included the northern marginal seas. Meridionally, the Indian Ocean is delimited from the Atlantic Ocean by the 20° east meridian, running south from Cape Agulhas, from the Pacific Ocean by the meridian of 146°49'E, running south from the southernmost point of Tasmania.
The northernmost extent of the Indian Ocean is 30° north in the Persian Gulf. The Indian Ocean covers 70,560,000 km2, including the Red Sea and the Persian Gulf but excluding the Southern Ocean, or 19.5% of the world's oceans. The ocean's continental shelves are narrow. An exception is found off Australia's western coast; the average depth of the ocean is 3,890 m. Its deepest point is Sunda Trench at a depth of 7,450 m. North of 50° south latitude, 86% of the main basin is covered by pelagic sediments, of which more than half is globigerina ooze; the remaining 14% is layered with terrigenous sediments. Glacial outwash dominates the extreme southern latitudes; the major choke points include Bab el Mandeb, Strait of Hormuz, the Lombok Strait, the Strait of Malacca and the Palk Strait. Seas include the Gulf of Aden, Andaman Sea, Arabian Sea, Bay of Bengal, Great Australian Bight, Laccadive Sea, Gulf of Mannar, Mozambique Channel, Gulf of Oman, Persian Gulf, Red Sea and other tributary water bodies.
The Indian Ocean is artificially connected to the Mediterranean Sea through the Suez Canal, accessible via the Red Sea. All of the Indian Ocean is in the Eastern Hemisphere and the centre of the Eastern Hemisphere, the 90th meridian east, passes through the Ninety East Ridge. Marginal seas, gulfs and straits of the Indian Ocean include: Several features make the Indian Ocean unique, it constitutes the core of the large-scale Tropical Warm Pool which, when interacting with the atmosphere, affects the climate both regionally and globally. Asia prevents the ventilation of the Indian Ocean thermocline; that continent drives the Indian Ocean monsoon, the strongest on Earth, which causes large-scale seasonal variations in ocean currents, including the reversal of the Somali Current and Indian Monsoon Current. Because of the Indian Ocean Walker circulation there is no continuous equatorial easterlies. Upwelling occurs near the Horn of Africa and the Arabian Peninsula in the Northern Hemisphere and north of the trade winds in the Southern Hemisphere.
The Indonesian Throughflow is a unique Equatorial connection to the Pacific. The climate north of the equator is affected by a monsoon climate. Strong north-east winds blow from October until April. In the Arabian Sea the violent Monsoon brings rain to the Indian subcontinent. In the southern hemisphere, the winds are milder, but summer storms near Mauritius can be severe; when the monsoon winds change, cyclones sometimes strike the shores of the Arabian Sea and the Bay of Bengal. The Indian Ocean is the warmest ocean in the world. Long-term ocean temperature records show a rapid, continuous warming in the Indian Ocean, at about 0.7–1.2 °C during 1901–2012. Indian Ocean warming is the largest among the tropical oceans, about 3 times faster than the warming observed in the Pacific. Research indicates that human induced greenhouse warming, changes in the frequency and magnitude of El Niño events are a trigger to this strong warming in the Indian Ocean. South of the Equator the Indian Ocean is gaining heat from June to October, during the austral winter, while it is losing heat from November to March, during the austral summer.
Among the few large rivers flowing into the Indian Ocean are the Zambezi and Jubba in Africa. The ocean's currents are controlled by the monsoon. Two large gyres, one in the northern hemisphere flowing clockwise and one south of the equator moving anticlockwise, constitute the dominant flow pattern. During the winter monsoon, circulation is reversed north of 30°S and winds are weakened during winter and the transitional periods between the monsoons. Deep water circulation is controlled by inflows from the Atlantic Ocean, the Red Sea, Antarctic currents. North of 20 ° south latitude the minimum surface temperature is 22 °C. Southward of 40° south latitude, temperatures