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The Third Pole, also known as the Hindu Kush-Karakoram-Himalayan system (HKKH), is a mountainous region located in the west and south of the Tibetan Plateau.Part of High-Mountain Asia, it spreads over an area of more than 4.2 million square kilometres (1.6 million square miles) across nine countries, i.e. Afghanistan, Bangladesh, Bhutan, China, India, Myanmar, Nepal, Pakistan and Tajikistan ...
High-mountain Asia (HMA) is a high-elevation [1] geographic region in central-south Asia that includes numerous cordillera and highland systems around the Tibetan Plateau, encompassing regions of East, Southeast, South and Central Asia.
The ocean plays a key role in the water cycle as it is the source of 86% of global evaporation. [2] The water cycle involves the exchange of energy, which leads to temperature changes. When water evaporates, it takes up energy from its surroundings and cools the environment. When it condenses, it releases energy and warms the environment.
Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, and erosion by water and glaciers. Plateaus are classified according to their surrounding environment as intermontane, piedmont, or continental. A few plateaus may have a small flat top while others have wide ones.
The Caspian Sea is the world's largest inland body of water, described as the world's largest lake and usually referred to as a full-fledged sea. [2] [3] [4] An endorheic basin, it lies between Europe and Asia: east of the Caucasus, west of the broad steppe of Central Asia, south of the fertile plains of Southern Russia in Eastern Europe, and north of the mountainous Iranian Plateau.
As of 2003, 85% of the river mouths have dried up, including the lake's largest tributary, the Buha River. In between 1959 and 1982, there had been an annual water level drop of 10 centimeters (3.9 in), which was reversed at a rate of 10 cm/year (3.9 in/year) between 1983 and 1989, but has continued to drop since.
The river has been called the "Everest of Rivers" because of the extreme conditions of the river. [18] The first attempt to run was made in 1993 by a Japanese group who lost one member on the river. In October 1998, a kayaking expedition sponsored by the National Geographic Society attempted to navigate the Yarlung Tsangpo Grand Canyon .
The Tibetan Plateau, [a] also known as Qinghai–Tibet Plateau [b] and Qing–Zang Plateau, [c] is a vast elevated plateau located at the intersection of Central, South, and East Asia. [ d ] Geographically, it is located to the north of Himalayas and the Indian subcontinent , and to the south of Tarim Basin and Mongolian Plateau .