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Geography Of Vietnam
Vietnam is located on the eastern margin of the Indochinese peninsula and occupies about 331,211.6 square kilometers, of which about 25% was under cultivation in 1987. It borders the Gulf of Tonkin, Gulf of Thailand, and Pacific Ocean, along with China, Laos, and Cambodia. The elongated roughly ''S'' shaped country has a north-to-south distance of and is about wide at the narrowest point. With a coastline of , excluding islands, Vietnam claims as the limit of its territorial waters, an additional as a contiguous customs and security zone. It has an exclusive economic zone of with . The boundary with Laos was settled on both an ethnic and geographical basis between the rulers of Vietnam and Laos in the mid-seventeenth century. The Annamite Range as a reference, was formally defined by a delimitation treaty signed in 1977 and ratified in 1986. The frontier with Cambodia, defined at the time of French annexation of the western part of the Mekong Delta in 1867, remained essent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southeast Asia
Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical United Nations geoscheme for Asia#South-eastern Asia, south-eastern region of Asia, consisting of the regions that are situated south of mainland China, east of the Indian subcontinent, and north-west of mainland Australia. Southeast Asia is bordered to the north by East Asia, to the west by South Asia and the Bay of Bengal, to the east by Oceania and the Pacific Ocean, and to the south by Australia (continent), Australia and the Indian Ocean. Apart from the British Indian Ocean Territory and two out of atolls of Maldives, 26 atolls of Maldives in South Asia, Maritime Southeast Asia is the only other subregion of Asia that lies partly within the Southern Hemisphere. Mainland Southeast Asia is completely in the Northern Hemisphere. East Timor and the southern portion of Indonesia are the only parts that are south of the Equator. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mekong Delta
The Mekong Delta ( vi, Đồng bằng Sông Cửu Long, lit=Nine Dragon River Delta or simply vi, Đồng Bằng Sông Mê Kông, lit=Mekong River Delta, label=none), also known as the Western Region ( vi, Miền Tây, links=no) or South-western region ( vi, Tây Nam Bộ, links=no), is the region in southwestern Vietnam where the Mekong River approaches and empties into the sea through a network of distributaries. The Mekong delta region encompasses a large portion of south-western Vietnam of over . The size of the area covered by water depends on the season. Its wet coastal geography makes it an important source of agriculture and aquaculture for the country. The delta has been occupied as early as the 4th century BC. As a product of Khmer, Vietnamese, Chinese, and French settlement in the region, the delta and its waterways have numerous names, including the Khmer term Bassac to refer to the lower basin and the largest river branch flowing through it. After the 1954 Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canal
Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface flow under atmospheric pressure, and can be thought of as artificial rivers. In most cases, a canal has a series of dams and locks that create reservoirs of low speed current flow. These reservoirs are referred to as ''slack water levels'', often just called ''levels''. A canal can be called a ''navigation canal'' when it parallels a natural river and shares part of the latter's discharges and drainage basin, and leverages its resources by building dams and locks to increase and lengthen its stretches of slack water levels while staying in its valley. A canal can cut across a drainage divide atop a ridge, generally requiring an external water source above the highest elevation. The best-known example of such a canal is the Panama Canal. Many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dike (construction)
A levee (), dike ( American English), dyke ( Commonwealth English), embankment, floodbank, or stop bank is a structure that is usually earthen and that often runs parallel to the course of a river in its floodplain or along low-lying coastlines. The purpose of a levee is to keep the course of rivers from changing and to protect against flooding of the area adjoining the river or coast. Levees can be naturally occurring ridge structures that form next to the bank of a river, or be an artificially constructed fill or wall that regulates water levels. Ancient civilizations in the Indus Valley, ancient Egypt, Mesopotamia and China all built levees. Today, levees can be found around the world, and failures of levees due to erosion or other causes can be major disasters. Etymology Speakers of American English (notably in the Midwest and Deep South) use the word ''levee'', from the French word (from the feminine past participle of the French verb , 'to raise'). It ori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black River (Asia)
The Black River, (, from the Tai language ''Da'' meaning "dark-brown") also known upstream as the Lixian River in China, is a river located in China and northwestern Vietnam. Course Its source is in Yunnan province of China. From China, the river's course passes through the Vietnamese provinces of Lai Châu (where it forms part of the border with Điện Biên province), Sơn La and Hòa Bình. The Black River is the most important tributary of the Red River, which it joins in Tam Nông district near Việt Trì in Phú Thọ province. It also forms part of the border between Phú Thọ province and Hanoi (previously the border with Hà Tây province). The river's total length is 910 km, with approximately 427 km in China and 527 km in Vietnam. Hydroelectric power The Black River yields substantial hydroelectric power. In China, seven dams are planned of which six, the Yayangshan Dam, Shimenkan Dam, Longma Dam, Jufudu Dam, Gelantan Dam, and Tukahe Dam, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yunnan
Yunnan , () is a landlocked Provinces of China, province in Southwest China, the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is Kunming. The province borders the Chinese provinces of Guizhou, Sichuan, autonomous regions of Guangxi, and Tibet Autonomous Region, Tibet as well as Southeast Asian countries: Vietnam, Laos, and Myanmar. Yunnan is China's fourth least developed province based on disposable income per capita in 2014. Yunnan is situated in a mountainous area, with high elevations in the northwest and low elevations in the southeast. Most of the population lives in the eastern part of the province. In the west, the altitude can vary from the mountain peaks to river valleys by as much as . Yunnan is rich in natural resources and has the largest diversity of plant life in China. Of the approximately 30,000 species of Vascular plant, higher plants in China, Yu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alluvial Fan
An alluvial fan is an accumulation of sediments that fans outwards from a concentrated source of sediments, such as a narrow canyon emerging from an escarpment. They are characteristic of mountainous terrain in arid to semiarid climates, but are also found in more humid environments subject to intense rainfall and in areas of modern glaciation. They range in area from less than to almost . Alluvial fans typically form where flow emerges from a confined channel and is free to spread out and infiltrate the surface. This reduces the carrying capacity of the flow and results in deposition of sediments. The flow can take the form of infrequent debris flows or one or more ephemeral or perennial streams. Alluvial fans are common in the geologic record, such as in the Triassic basins of eastern North America and the New Red Sandstone of south Devon. Such fan deposits likely contain the largest accumulations of gravel in the geologic record. Alluvial fans have also been found on Mars ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thái Bình River
Thái Bình river (Vietnamese: Sông Thái Bình) is the name of the Thái Bình river system's main river in Northern Vietnam. This river system joins with the Red River system and brings alluvium to create Red River Delta. Thái Bình river starts in the area of Đồng Phúc commune, Yên Dũng District, Bắc Giang Province - where the Thuong River and Cầu River join with each other. It then flows to Hải Dương Province and becomes the boundary between Bắc Giang and Hải Dương. After flowing through the area of Hải Dương, it enters Thái Bình Province and flows to the South China Sea The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by the shores of South China (hence the name), in the west by the Indochinese Peninsula, in the east by the islands of Taiwan and northwestern Phi ... at Ba Lat river mouth. The total length of the main river is about Rivers of Thái Bình province Rivers of Bắc G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hong River
The Red River, also known as the Hong River (; vi, Sông Hồng; Chữ Nôm: 瀧紅; Chữ Hán: 紅河), the ' and ' (lit. "Mother River") in Vietnamese, and the (, ' Nguyên Giang) in Chinese, is a -long river that flows from Yunnan in Southwest China through northern Vietnam to the Gulf of Tonkin. According to C. Michael Hogan, the associated Red River Fault was instrumental in forming the entire South China Sea at least as early as 37 million years before present. The name red and southern position in China are associated in traditional cardinal directions. Geography The Red River begins in China's Yunnan province in the mountains south of Dali. Main headstreams Leqiu River, Xi River and Juli River confluence at Nanjian where they form the Lishe River. The Lishe River meets with another headstream, the Yijie River at Hongtupo, Chuxiong Prefecture. It flows generally southeastward, passing through Yi and Dai ethnic minority areas before leaving ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hong River Delta
The Red River Delta or Hong River Delta ( vi, Châu thổ sông Hồng) is the flat low-lying plain formed by the Red River and its distributaries merging with the Thái Bình River in northern Vietnam. ''Hồng'' (紅) is a Sino-Vietnamese word for "red" or "crimson." The delta has the smallest area but highest population and population density of all regions. The region, measuring some is well protected by a network of dikes. It is an agriculturally rich and densely populated area. Most of the land is devoted to rice cultivation. Eight provinces together with two municipalities, the capital Hanoi, and the port Haiphong form the delta. It has a population of almost 23 million in 2019. In 2021, Paul Sidwell proposed that the locus of Proto-Austroasiatic languages was in this area about 4,000–4,500 years before present.Sidwell, Paul. 2021''Austroasiatic Dispersal: the AA "Water-World" Extended'' The Hong River Delta is the cradle of the Vietnamese nation. Water puppetry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paracel Islands
The Paracel Islands, also known as the Xisha Islands () and the Hoang Sa Archipelago ( vi, Quần đảo Hoàng Sa, lit=Yellow Sand Archipelago), are a disputed archipelago in the South China Sea. The archipelago includes about 130 small coral islands and reefs, most grouped into the northeastern Amphitrite Group or the western Crescent Group. They are distributed over a maritime area of around , with a land area of approximately . The name ''Paracel'' is of Portuguese origin, and appears on 16th-century Portuguese maps. The archipelago is approximately equidistant from the coastlines of the People's Republic of China (PRC) and Vietnam, and approximately one-third of the way from central Vietnam to the northern Philippines. The archipelago includes Dragon Hole, the deepest underwater sinkhole in the world. Turtles and seabirds are native to the islands, which have a hot and humid climate, abundant rainfall and frequent typhoons. The archipelago is surrounded by productive fishin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
