1.
Southeast Asia
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Southeast Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India, west of New Guinea and north of Australia. The region lies near the intersection of geological plates, with seismic and volcanic activity. Southeast Asia consists of two regions, Mainland Southeast Asia, also known historically as Indochina, comprising Vietnam, Laos, Cambodia, Thailand, Myanmar. Maritime Southeast Asia, comprising Indonesia, East Malaysia, Singapore, Philippines, East Timor, Brunei, Cocos Islands, definitions of Southeast Asia vary, but most definitions include the area represented by the countries listed below. All of the states are members of the Association of Southeast Asian Nations, the area, together with part of South Asia, was widely known as the East Indies or simply the Indies until the 20th century. Sovereignty issues exist over some territories in the South China Sea, Papua New Guinea has stated that it might join ASEAN, and is currently an observer. Southeast Asia is geographically divided into two subregions, namely Mainland Southeast Asia and Maritime Southeast Asia, Mainland Southeast Asia includes, Maritime Southeast Asia includes, The Andaman and Nicobar Islands of India are geographically considered part of Southeast Asia. Eastern Bangladesh and the Seven Sister States of India are culturally part of Southeast Asia, the eastern half of Indonesia and East Timor are considered to be biogeographically part of Oceania. Homo sapiens reached the region by around 45,000 years ago, homo floresiensis also lived in the area up until 12,000 years ago, when they became extinct. Austronesian people, who form the majority of the population in Indonesia, Malaysia, Brunei, East Timor. Solheim and others have shown evidence for a Nusantao maritime trading network ranging from Vietnam to the rest of the archipelago as early as 5000 BC to 1 AD. The peoples of Southeast Asia, especially those of Austronesian descent, have been seafarers for thousands of years and their vessels, such as the vinta, were ocean-worthy. Magellans voyage records how much more manoeuvrable their vessels were, as compared to the European ships, Passage through the Indian Ocean aided the colonisation of Madagascar by the Austronesian people, as well as commerce between West Asia and Southeast Asia. Gold from Sumatra is thought to have reached as far west as Rome and this was later replaced by Hinduism. Theravada Buddhism soon followed in 525, in the 15th century, Islamic influences began to enter. This forced the last Hindu court in Indonesia to retreat to Bali, in Mainland Southeast Asia, Burma, Cambodia and Thailand retained the Theravada form of Buddhism, brought to them from Sri Lanka. This type of Buddhism was fused with the Hindu-influenced Khmer culture, very little is known about Southeast Asian religious beliefs and practices before the advent of Indian merchants and religious influences from the 2nd century BCE onwards. Prior to the 13th century CE, Hinduism and Buddhism were the religions in Southeast Asia
2.
South China Sea
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The South China Sea is a marginal sea that is part of the Pacific Ocean, encompassing an area from the Karimata and Malacca Straits to the Strait of Taiwan of around 3,500,000 square kilometres. The areas importance largely results from one-third of the worlds shipping sailing through its waters, the sea and its mostly uninhabited islands are subject to competing claims of sovereignty by several countries. These claims are reflected in the variety of names used for the islands. South China Sea is the dominant term used in English for the sea, and this name is a result of early European interest in the sea as a route from Europe and South Asia to the trading opportunities of China. In the sixteenth century Portuguese sailors called it the China Sea, the International Hydrographic Organization refers to the sea as South China Sea. The Classic of Poetry, Zuo Zhuan, and Guoyu classics of the Spring and Autumn period also referred to the sea, Nan Hai, the South Sea, was one of the Four Seas of Chinese literature. There are three other seas, one for each of the four cardinal directions, during the Eastern Han dynasty, Chinas rulers called the Sea Zhang Hai. Fei Hai became popular during the Southern and Northern Dynasties period, usage of the current Chinese name, Nan Hai, became gradually widespread during the Qing Dynasty. In Southeast Asia it was called the Champa Sea or Sea of Cham. The majority of the sea came under Japanese naval control during World War II following the acquisition of many surrounding South East Asian territories in 1941. Japan calls the sea Minami Shina Kai South China Sea and this was written 南支那海 until 2004, when the Japanese Foreign Ministry and other departments switched the spelling 南シナ海, which has become the standard usage in Japan. In China, it is called the South Sea, 南海 Nánhǎi, in Malaysia, Indonesia and the Philippines, it was long called the South China Sea, with the part within Philippine territorial waters often called the Luzon Sea, Dagat Luzon, by the Philippines. However, following an escalation of the Spratly Islands dispute in 2011, a PAGASA spokesperson said that the sea to the east of the Philippines will continue to be called the Philippine Sea. In September 2012, Philippine President Benigno Aquino III signed Administrative Order No, states and territories with borders on the sea include, the Peoples Republic of China, the Republic of China, the Philippines, Malaysia, Brunei, Indonesia, Singapore, and Vietnam. Major rivers that flow into the South China Sea include the Pearl, Min, Jiulong, Red, Mekong, Rajang, Pahang, Pampanga, the International Hydrographic Organization defines the limits of the South China Sea as follows, On the South. From Fuki Kaku the North point of Formosa to Kiushan Tao on to the South point of Haitan Tao, the Mainland, the Southern limit of the Gulf of Thailand and the East coast of the Malay Peninsula. The sea lies above a drowned continental shelf, during recent ice ages global sea level was hundreds of metres lower, the South China Sea opened around 45 million years ago when the Dangerous Ground rifted away from southern China. Extension culminated in seafloor spreading around 30 million years ago, a process that propagated to the SW resulting in the V-shaped basin we see today, extension ceased around 17 million years ago
3.
Pacific Ocean
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The Pacific Ocean is the largest and deepest of the Earths oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean in the south and is bounded by Asia and Australia in the west, the Mariana Trench in the western North Pacific is the deepest point in the world, reaching a depth of 10,911 metres. Both the center of the Water Hemisphere and the Western Hemisphere are in the Pacific Ocean, the oceans current name was coined by Portuguese explorer Ferdinand Magellan during the Spanish circumnavigation of the world in 1521, as he encountered favourable winds on reaching the ocean. He called it Mar Pacífico, which in both Portuguese and Spanish means peaceful sea, important human migrations occurred in the Pacific in prehistoric times. Long-distance trade developed all along the coast from Mozambique to Japan, trade, and therefore knowledge, extended to the Indonesian islands but apparently not Australia. By at least 878 when there was a significant Islamic settlement in Canton much of trade was controlled by Arabs or Muslims. In 219 BC Xu Fu sailed out into the Pacific searching for the elixir of immortality, from 1404 to 1433 Zheng He led expeditions into the Indian Ocean. The east side of the ocean was discovered by Spanish explorer Vasco Núñez de Balboa in 1513 after his expedition crossed the Isthmus of Panama and he named it Mar del Sur because the ocean was to the south of the coast of the isthmus where he first observed the Pacific. Later, Portuguese explorer Ferdinand Magellan sailed the Pacific East to West on a Castilian expedition of world circumnavigation starting in 1519, Magellan called the ocean Pacífico because, after sailing through the stormy seas off Cape Horn, the expedition found calm waters. The ocean was often called the Sea of Magellan in his honor until the eighteenth century, sailing around and east of the Moluccas, between 1525 and 1527, Portuguese expeditions discovered the Caroline Islands, the Aru Islands, and Papua New Guinea. In 1542–43 the Portuguese also reached Japan, in 1564, five Spanish ships consisting of 379 explorers crossed the ocean from Mexico led by Miguel López de Legazpi and sailed to the Philippines and Mariana Islands. The Manila galleons operated for two and a half centuries linking Manila and Acapulco, in one of the longest trade routes in history, Spanish expeditions also discovered Tuvalu, the Marquesas, the Cook Islands, the Solomon Islands, and the Admiralty Islands in the South Pacific. In the 16th and 17th century Spain considered the Pacific Ocean a Mare clausum—a sea closed to other naval powers, as the only known entrance from the Atlantic the Strait of Magellan was at times patrolled by fleets sent to prevent entrance of non-Spanish ships. On the western end of the Pacific Ocean the Dutch threatened the Spanish Philippines, Spain also sent expeditions to the Pacific Northwest reaching Vancouver Island in southern Canada, and Alaska. The French explored and settled Polynesia, and the British made three voyages with James Cook to the South Pacific and Australia, Hawaii, and the North American Pacific Northwest, one of the earliest voyages of scientific exploration was organized by Spain in the Malaspina Expedition of 1789–1794. It sailed vast areas of the Pacific, from Cape Horn to Alaska, Guam and the Philippines, New Zealand, Australia, and the South Pacific. Growing imperialism during the 19th century resulted in the occupation of much of Oceania by other European powers, and later, Japan, in Oceania, France got a leading position as imperial power after making Tahiti and New Caledonia protectorates in 1842 and 1853 respectively. After navy visits to Easter Island in 1875 and 1887, Chilean navy officer Policarpo Toro managed to negotiate an incorporation of the island into Chile with native Rapanui in 1888, by occupying Easter Island, Chile joined the imperial nations
4.
Age of Discovery
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It also marks the rise of the period of widespread adoption in Europe of colonialism and mercantilism. Many lands previously unknown to Europeans were discovered during this period, from the perspective of many non-Europeans, the Age of Discovery marked the arrival of settlers and invaders from a previously unknown continent. This represented one of the most-significant global events concerning ecology, agriculture and it also allowed for the expansion of Christianity throughout the world with the spread of missionary activity, becoming the worlds largest religion. The Portuguese began systematically exploring the Atlantic coast of Africa from 1418, in 1488 Bartolomeu Dias reached the Indian Ocean by this route. In 1492 the Catholic Monarchs of Castile and Aragon funded Christopher Columbuss plan to sail west to reach the Indies by crossing the Atlantic and he landed on a continent uncharted by Europeans and seen as a new world, the Americas. In 1498, a Portuguese expedition commanded by Vasco da Gama reached India by sailing around Africa, soon, the Portuguese sailed further eastward, to the valuable Spice Islands in 1512, landing in China one year later. In 1513, Spanish Vasco Núñez de Balboa crossed the Isthmus of Panama, thus, Europe first received news of the eastern and western Pacific within a one-year span around 1512. Meanwhile, from the 1580s to the 1640s, Russians explored and conquered almost the whole of Siberia, another source was the Radhanite Jewish trade networks of merchants established as go-betweens between Europe and the Muslim world during the time of the Crusader states. Knowledge about the Atlantic African coast was fragmented and derived mainly from old Greek and Roman maps based on Carthaginian knowledge, the Red Sea was barely known and only trade links with the Maritime republics, the Republic of Venice especially, fostered collection of accurate maritime knowledge. Indian Ocean trade routes were sailed by Arab traders, between 1405 and 1421, the Yongle Emperor of Ming China sponsored a series of long range tributary missions under the command of Zheng He. The fleets visited Arabia, East Africa, India, Maritime Southeast Asia, by 1400 a Latin translation of Ptolemys Geographia reached Italy coming from Constantinople. The rediscovery of Roman geographical knowledge was a revelation, both for mapmaking and worldview, although reinforcing the idea that the Indian Ocean was landlocked, a prelude to the Age of Discovery was a series of European expeditions crossing Eurasia by land in the late Middle Ages. A series of Europeans took advantage of these to explore eastwards, most were Italians, as trade between Europe and the Middle East was controlled mainly by the Maritime republics. The close Italian links to the Levant raised great curiosity and commercial interest in countries which lay further east, christian embassies were sent as far as Karakorum during the Mongol invasions of the Levant, from which they gained a greater understanding of the world. The first of these travellers was Giovanni da Pian del Carpine, dispatched by Pope Innocent IV to the Great Khan, about the same time, Russian prince Yaroslav of Vladimir, and subsequently his sons Alexander Nevsky and Andrey II of Vladimir, travelled to the Mongolian capital. Though having strong political implications, their journeys left no detailed accounts, other travellers followed, like French André de Longjumeau and Flemish William of Rubruck, who reached China through Central Asia. After returning, he dictated an account of his journeys to a scholar he met in Granada, the Rihla, between 1357 and 1371 a book of supposed travels compiled by John Mandeville acquired extraordinary popularity. These overland journeys had little immediate effect, the Mongol Empire collapsed almost as quickly as it formed and soon the route to the east became more difficult and dangerous
5.
Thailand
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Thailand, officially the Kingdom of Thailand, formerly known as Siam, is a country at the centre of the Indochinese peninsula in Southeast Asia. With a total area of approximately 513,000 km2, Thailand is the worlds 51st-largest country and it is the 20th-most-populous country in the world, with around 66 million people. The capital and largest city is Bangkok, Thailand is a constitutional monarchy and has switched between parliamentary democracy and military junta for decades, the latest coup being in May 2014 by the National Council for Peace and Order. Its capital and most populous city is Bangkok and its maritime boundaries include Vietnam in the Gulf of Thailand to the southeast, and Indonesia and India on the Andaman Sea to the southwest. The Thai economy is the worlds 20th largest by GDP at PPP and it became a newly industrialised country and a major exporter in the 1990s. Manufacturing, agriculture, and tourism are leading sectors of the economy and it is considered a middle power in the region and around the world. The country has always been called Mueang Thai by its citizens, by outsiders prior to 1949, it was usually known by the exonym Siam. The word Siam has been identified with the Sanskrit Śyāma, the names Shan and A-hom seem to be variants of the same word. The word Śyâma is possibly not its origin, but a learned, another theory is the name derives from Chinese, Ayutthaya emerged as a dominant centre in the late fourteenth century. The Chinese called this region Xian, which the Portuguese converted into Siam, the signature of King Mongkut reads SPPM Mongkut King of the Siamese, giving the name Siam official status until 24 June 1939 when it was changed to Thailand. Thailand was renamed Siam from 1945 to 11 May 1949, after which it reverted to Thailand. According to George Cœdès, the word Thai means free man in the Thai language, ratcha Anachak Thai means kingdom of Thailand or kingdom of Thai. Etymologically, its components are, ratcha, -ana- -chak, the Thai National Anthem, written by Luang Saranupraphan during the extremely patriotic 1930s, refers to the Thai nation as, prathet Thai. The first line of the anthem is, prathet thai ruam lueat nuea chat chuea thai, Thailand is the unity of Thai flesh. There is evidence of habitation in Thailand that has been dated at 40,000 years before the present. Similar to other regions in Southeast Asia, Thailand was heavily influenced by the culture and religions of India, Thailand in its earliest days was under the rule of the Khmer Empire, which had strong Hindu roots, and the influence among Thais remains even today. Voretzsch believes that Buddhism must have been flowing into Siam from India in the time of the Indian Emperor Ashoka of the Maurya Empire, later Thailand was influenced by the south Indian Pallava dynasty and north Indian Gupta Empire. The Menam Basin was originally populated by the Mons, and the location of Dvaravati in the 7th century, the History of the Yuan mentions an embassy from the kingdom of Sukhothai in 1282
6.
Vietnam
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Vietnam, officially the Socialist Republic of Vietnam, is the easternmost country on the Indochina Peninsula in Southeast Asia. With an estimated 92.7 million inhabitants as of 2016, it is the worlds 14th-most-populous country, and its capital city has been Hanoi since the reunification of North and South Vietnam in 1976, with Ho Chi Minh City as a historical city as well. The northern part of Vietnam was part of Imperial China for over a millennium, an independent Vietnamese state was formed in 939, following a Vietnamese victory in the Battle of Bạch Đằng River. Following a Japanese occupation in the 1940s, the Vietnamese fought French rule in the First Indochina War, thereafter, Vietnam was divided politically into two rival states, North Vietnam, and South Vietnam. Conflict between the two sides intensified in what is known as the Vietnam War, the war ended with a North Vietnamese victory in 1975. Vietnam was then unified under a communist government but remained impoverished, in 1986, the government initiated a series of economic and political reforms which began Vietnams path towards integration into the world economy. By 2000, it had established relations with all nations. Since 2000, Vietnams economic growth rate has been among the highest in the world and its successful economic reforms resulted in its joining the World Trade Organization in 2007. It is also a member of the Asia-Pacific Economic Cooperation and the Organisation Internationale de la Francophonie, Vietnam remains one of the worlds four remaining one-party socialist states officially espousing communism. The name Việt Nam is a variation of Nam Việt, a name that can be traced back to the Triệu Dynasty of the 2nd century BC. The word Việt originated as a form of Bách Việt. The form Vietnam is first recorded in the 16th-century oracular poem Sấm Trạng Trình, the name has also been found on 12 steles carved in the 16th and 17th centuries, including one at Bao Lam Pagoda in Haiphong that dates to 1558. Then, as recorded, rewarded Yuenan/Vietnam as their nations name, to also show that they are below the region of Baiyue/Bach Viet. Between 1804 and 1813, the name was used officially by Emperor Gia Long and it was revived in the early 20th century by Phan Bội Châus History of the Loss of Vietnam, and later by the Vietnamese Nationalist Party. The country was usually called Annam until 1945, when both the government in Huế and the Viet Minh government in Hanoi adopted Việt Nam. Archaeological excavations have revealed the existence of humans in what is now Vietnam as early as the Paleolithic age, Homo erectus fossils dating to around 500,000 BC have been found in caves in Lạng Sơn and Nghệ An provinces in northern Vietnam. The oldest Homo sapiens fossils from mainland Southeast Asia are of Middle Pleistocene provenance, teeth attributed to Homo sapiens from the Late Pleistocene have also been found at Dong Can, and from the Early Holocene at Mai Da Dieu, Lang Gao and Lang Cuom. The Hồng Bàng dynasty of the Hùng kings is considered the first Vietnamese state, in 257 BC, the last Hùng king was defeated by Thục Phán, who consolidated the Lạc Việt and Âu Việt tribes to form the Âu Lạc, proclaiming himself An Dương Vương
7.
Chao Phraya River
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The Chao Phraya is the major river in Thailand, with its low alluvial plain forming the centre of the country. It flows through Bangkok and then into the Gulf of Thailand, on many old European maps, the river is named Menam or Mae Nam, Thai for river. H. Warington Smyth, who served as Director of the Department of Mines in Siam from 1891 to 1896, in the English-language media in Thailand, the name Chao Phraya River is often translated as river of kings. The Chao Phraya begins at the confluence of the Ping and Nan rivers at Nakhon Sawan in Nakhon Sawan Province, after this it flows south for 372 kilometres from the central plains to Bangkok and the Gulf of Thailand. In the low alluvial plain which begins below the Chainat Dam, the khlongs are used for the irrigation of the regions rice paddies. The rough coordinates of the river are 13 N,100 E and this area has a wet monsoon climate, with over 1,400 millimetres of rainfall per year. Temperatures range from 24 to 33 °C in Bangkok, the lower Chao Phraya underwent several man-made modifications during the Ayutthaya period. Several shortcut canals were constructed to bypass large loops in the river, the course of the river has since changed to follow many of these canals. In 1538, Thailands first river engineering of a 3 km long canal was dug at the order of King Chairachathirat and it was called khlong lat, today known as Khlong Bangkok Noi. It shortened the route by 13–14 km for ships from the Gulf of Siam to the then-capital city, in 1542, a two kilometre-long canal, khlong lat Bangkok, was completed. Today its called Khlong Bangkok Yai and it is said to have shortened the river route by 14 km. In 1608, a seven kilometre-long Khlong Bang Phrao canal was completed and has shortened the Chao Phrayas original route by 18 km, in 1636, the khlong lat mueang Nonthaburi was completed. In 1722, the two kilometre long khlong lat Kret Noi shortened the Chao Phraya by 7 km and this route was from the island of Ko Kret. Cities along the Chao Phraya include, from north to south, Nakhon Sawan, Uthai Thani, Chai Nat, Sing Buri, Ang Thong, Ayutthaya, Pathum Thani, Nonthaburi, Bangkok, and Samut Prakan. These cities are among the most historically significant and densely populated settlements of Thailand due to their access to the waterway, in Bangkok, the Chao Phraya is a major transportation artery for a network of river buses, cross-river ferries, and water taxis. More than 15 boat lines operate on the rivers and canals of the city, the principal tributaries of the Chao Phraya River are the Pa Sak River, the Sakae Krang River, the Nan River, the Ping River, and the Tha Chin River. Each of these tributaries is augmented by minor tributaries referred to as khwae, all of the tributaries, including the lesser khwae, form an extensive tree-like pattern, with branches flowing through nearly every province in central and northern Thailand. None of the tributaries of the Chao Phraya extend beyond the nations borders, the Nan and the Yom River flow nearly parallel from Phitsanulok to Chumsaeng in the north of Nakhon Sawan Province
8.
Mekong
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The Mekong is a trans-boundary river in Southeast Asia. It is the worlds 12th-longest river and the 7th-longest in Asia and its estimated length is 4,350 km, and it drains an area of 795,000 km2, discharging 475 km3 of water annually. From the Tibetan Plateau the river runs through Chinas Yunnan Province, Myanmar, Laos, Thailand, Cambodia, in 1995, Laos, Thailand, Cambodia, and Vietnam established the Mekong River Commission to assist in the management and coordinated use of the Mekongs resources. In 1996 China and Myanmar became dialogue partners of the MRC, the extreme seasonal variations in flow and the presence of rapids and waterfalls in the Mekong make navigation difficult. Even so, the river is a trade route between western China and Southeast Asia. The English name Mekong derives from a form of Thai. In Thai and Lao, mae nam is used for any major river, as such, Thai and Lao locals often refer to it in English as the River Khong. In Khmer, Mékôngk is itself glossed as mother of water, from mé and taking kôngk as a form of kôngkea. The local names for the river include, Burmese, မဲခေါင်မြစ်, IPA, Chinese, 加果空桑贡玛曲, 扎那曲 and 扎曲 Zā Qū, upper reaches, 澜沧江, 瀾滄江 Láncāng Jiāng, middle and lower reaches, Khmer, មេគង្គ Mékôngk, ទន្លេមេគង្គ Tônlé Mékôngk, ទន្លេធំ Tônlé Thum. Tai of Sipsong Panna, น้ำแม่ของ, น้ำของ, the Mekong Basin has one of the worlds largest and most productive inland fisheries. An estimated two million tonnes of fish are landed a year, in addition to almost 500,000 tonnes of aquatic animals. Aquaculture yields about two tonnes of fish a year. Hence, the lower Mekong basin yields about 4.5 million tonnes of fish, the total economic value of the fishery is between US$3.9 and US$7 billion a year. Wild capture fisheries alone have been valued at US$2 billion a year and this value increases considerably when the multiplier effect is included, but estimates vary widely. An estimated 2.56 million tonnes of fish and other aquatic animals are consumed in the lower Mekong every year. Aquatic resources make up between 47 and 80 percent of protein in rural diets for people who live in the Lower Mekong Basin. Fish are the cheapest source of protein in the region and any decline in the fishery is likely to significantly impact nutrition. Fisheries contribute significantly to a diversified livelihood strategy for many people, particularly the poor and they provide a principal form of income for numerous people and act as a safety net and coping strategy in times of poor agricultural harvests or other difficulties
9.
Sediment
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For sediment in beverages, see dregs. For example, sand and silt can be carried in suspension in water and on reaching the sea be deposited by sedimentation. Sediments are most often transported by water, but also wind, beach sands and river channel deposits are examples of fluvial transport and deposition, though sediment also often settles out of slow-moving or standing water in lakes and oceans. Desert sand dunes and loess are examples of transport and deposition. Glacial moraine deposits and till are ice-transported sediments, sediment can be classified based on its grain size and/or its composition. Sediment size is measured on a log base 2 scale, called the Phi scale, composition of sediment can be measured in terms of, parent rock lithology mineral composition chemical make-up. This leads to an ambiguity in which clay can be used as both a size-range and a composition, sediment is transported based on the strength of the flow that carries it and its own size, volume, density, and shape. Stronger flows will increase the lift and drag on the particle, causing it to rise, rivers and streams carry sediment in their flows. This sediment can be in a variety of locations within the flow and these relationships are shown in the following table for the Rouse number, which is a ratio of sediment fall velocity to upwards velocity. If the upwards velocity is less than the settling velocity, but still high enough for the sediment to move, it will move along the bed as bed load by rolling, sliding. If the upwards velocity is higher than the velocity, the sediment will be transported high in the flow as wash load. As there are generally a range of different particle sizes in the flow, sediment motion can create self-organized structures such as ripples, dunes, antidunes on the river or stream bed. These bedforms are often preserved in rocks and can be used to estimate the direction. Overland flow can erode soil particles and transport them downslope, the erosion associated with overland flow may occur through different methods depending on meteorological and flow conditions. If the initial impact of rain droplets dislodges soil, the phenomenon is called rainsplash erosion, if overland flow is directly responsible for sediment entrainment but does not form gullies, it is called sheet erosion. If the flow and the substrate permit channelization, gullies may form, glaciers carry a wide range of sediment sizes, and deposit it in moraines. The overall balance between sediment in transport and sediment being deposited on the bed is given by the Exner equation and this expression states that the rate of increase in bed elevation due to deposition is proportional to the amount of sediment that falls out of the flow. This can be localized, and simply due to obstacles, examples are scour holes behind boulders, where flow accelerates
10.
Ocean current
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Depth contours, shoreline configurations, and interactions with other currents influence a currents direction and strength. Therefore ocean currents are primarily horizontal water movements, Ocean currents flow for great distances, and together, create the global conveyor belt which plays a dominant role in determining the climate of many of the Earth’s regions. More specifically, ocean currents influence the temperature of the regions through which they travel, for example, warm currents traveling along more temperate coasts increase the temperature of the area by warming the sea breezes that blow over them. Perhaps the most striking example is the Gulf Stream, which makes northwest Europe much more temperate than any region at the same latitude. Another example is Lima, Peru where the climate is cooler than the tropical latitudes in which the area is located, in these wind driven currents, the Ekman spiral effect results in the currents flowing at an angle to the driving winds. In addition, the areas of ocean currents move somewhat with the seasons. Deep ocean basins generally have a surface current, in that the eastern equatorward-flowing branch is broad. These western boundary currents are a consequence of the rotation of the Earth, Deep ocean currents are driven by density and temperature gradients. Thermohaline circulation is known as the oceans conveyor belt. These currents, called submarine rivers, flow under the surface of the ocean and are hidden from immediate detection, where significant vertical movement of ocean currents is observed, this is known as upwelling and downwelling. Deep ocean currents are currently being researched using a fleet of robots called Argo. The South Equatorial Currents of the Atlantic and Pacific straddle the equator, though the Coriolis effect is weak near the equator, water moving in the currents on either side of the equator is deflected slightly poleward and replaced by deeper water. Thus, equatorial upwelling occurs in these westward flowing equatorial surface currents, upwelling is an important process because this water from within and below the pycnocline is often rich in nutrients and greatly benefits the growth of marine organisms. By contrast, generally poor conditions for growth prevail in most of the tropical ocean because strong layering isolates deep. Ocean currents are measured in sverdrup, where 1 sv is equivalent to a flow rate of 1,000,000 m3 per second. Surface currents are found on the surface of an ocean, and are driven by large scale wind currents and they are directly affected by the wind—the Coriolis effect plays a role in their behaviors. Horizontal and vertical currents also exist below the pycnocline in the deeper waters. The movement of water due to differences in density as a function of water temperature, ripple marks in sediments, scour lines, and the erosion of rocky outcrops on deep-ocean floors are evidence that relatively strong, localized bottom currents exist
11.
Cambodia
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Cambodia, officially known as the Kingdom of Cambodia, is a country located in the southern portion of the Indochina Peninsula in Southeast Asia. It is 181,035 square kilometres in area, bordered by Thailand to the northwest, Laos to the northeast, Vietnam to the east, Cambodia has a population of over 15 million. The official religion is Theravada Buddhism, practiced by approximately 95 percent of the population, the countrys minority groups include Vietnamese, Chinese, Chams, and 30 hill tribes. The capital and largest city is Phnom Penh, the political, economic, the kingdom is a constitutional monarchy with Norodom Sihamoni, a monarch chosen by the Royal Throne Council, as head of state. The head of government is Hun Sen, who is currently the longest serving leader in South East Asia and has ruled Cambodia for over 25 years. In 802 AD, Jayavarman II declared himself king, uniting the warring Khmer princes of Chenla under the name Kambuja. The Indianized kingdom built monumental temples including Angkor Wat, now a World Heritage Site, after the fall of Angkor to Ayutthaya in the 15th century, a reduced and weakened Cambodia was then ruled as a vassal state by its neighbours. In 1863 Cambodia became a protectorate of France which doubled the size of the country by reclaiming the north, the Vietnam War extended into the country with the US bombing of Cambodia from 1969 until 1973. Following the Cambodian coup of 1970, the king gave his support to his former enemies. Following the 1991 Paris Peace Accords, Cambodia was governed briefly by a United Nations mission, the UN withdrew after holding elections in which around 90 percent of the registered voters cast ballots. The 1997 coup placed power solely in the hands of Prime Minister Hun Sen and the Cambodian Peoples Party, important sociopolitical issues includes widespread poverty, pervasive corruption, lack of political freedoms, low human development, and a high rate of hunger. While per capita income remains low compared to most neighbouring countries, agriculture remains the dominant economic sector, with strong growth in textiles, construction, garments, and tourism leading to increased foreign investment and international trade. Cambodia scored dismally in an annual index ranking the rule of law in 102 countries, placing 99th overall, Cambodia also faces environmental destruction as an imminent problem. The most severe activity in this regard is considered to be the countrywide deforestation, the Kingdom of Cambodia is the official English name of the country. The English Cambodia is an anglicisation of the French Cambodge, which in turn is the French transliteration of the Khmer Kampuchea, Kampuchea is the shortened alternative to the countrys official name in Khmer, Preah Reacheanachak Kampuchea. The Khmer endonym Kampuchea derives from the Sanskrit name Kambujadeśa, composed of देश, desa and कम्बोज, Kambujas, colloquially, Cambodians refer to their country as either Srok Khmer, meaning Khmers Land, or the slightly more formal Prateh Kampuchea, literally Country of Kampuchea. The name Cambodia is used most often in the Western world while Kampuchea is more used in the East. Excavations in its lower layers produced a series of dates as of 6000 BC
12.
Kota Bharu
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Kota Bharu is a city in Malaysia that serves as the state capital and royal seat of Kelantan. It is also the name of the territory or district in which Kota Bharu City is situated, the name means new city or new castle/fort in Malay. Kota Bharu is situated in the part of Peninsular Malaysia. The northeastern Malaysian city is close to the Thailand border, Kota Bharu is home to many mosques, various museums, the unique architecture of the old royal palaces and former royal buildings in the centre of town. Kota Bharu was founded during the late 19th century, prior to this, Kota Bharu was known as Kuala Kelantan. Before Kota Bharu assumed the role, the Kelantanese capital was divided into two which were Kota Kubang Labu and Kota Pengkalan Datu. During the 19th century, Kelantan was a prosperous and populous state which holds a population of around 30,000 to 50,000 people including a thousands of Chinese. One of the production from the state are gold, tin ore, black pepper, areca nut, rice, rattan, bamboo, agarwood, Kota Bharu act as entepot for goods due to its strategic location on the beside the Kelantan River. Besides that, there are also minority Tamil, Siamese and Orang Asli that resides in the city, the total population of Kota Bharu as at 2010 is 491,237. Ranking Population Kota Bharu District Kota Bharus population is 70% Muslim with the remainder consisting of Buddhists, the indigenous peoples that reside in the citys outskirts are generally practicing Christians. The predominantly urban local Chinese community mainly practices Buddhism, morality police are common and apprehend people who engaged in acts perceived as immoral. The Jawi script is used in names and restaurants. Social activities that do not contradict Islamic norms are allowed, government offices and many stores are closed on Fridays and Saturdays, but the vibrant markets remain open except for Islamic prayer times. The conservative Kelantanese state government under PAS has implemented some Islamic laws, however, these regulations apply only to Muslims. The Kota Bharu Municipal Council, the government authority, discourages the use of indecent attire by female employees in retail outlets and restaurants. Those who are caught for dressing indecently may be fined up to RM500, the definition of indecent dressing includes body hugging outfits which show off the body, blouses which show the navel, see through blouses, mini-skirts and tight pants. The Kelantanese culture is influenced by Thai culture because of its geographical proximity to Thailand. The Chinese are much more assimilated to local culture than those in parts of Malaysia
listen), "Thai Gulf") and "Gulf of Thailand" has been adopted as the official name of the body by the International Hydrographic Organization.[5][when?] Its name in Malay and Khmer continues to be the "Gulf of Siam", Teluk Siam and Khmer: ឈូងសមុទ្រសៀម, Chhoung Samut Siem, respectively. In Thai, the gulf is historically known as Ao Sayam (Thai: อ่าวสยาม).[6] In Vietnamese it is known as Vịnh Thái Lan.
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