Tell me about the strangeness of the Yarlung Zangbo River Grand Canyon.
The Yarlung Zangbo Grand Canyon is the deepest canyon on earth. According to the information released by the State Bureau of Surveying and Mapping, the Grand Canyon starts from Daduka Village, Pai Town, Milin County (3,000 meters above sea level) in the north, passes through the bend of Yarlung Zangbo River in Pailong Township, and reaches Pasigate Village in Medog County in the south (1 15m above sea level, near Assam in southern Tibet), with its main body in Medog County.
It separates the alpine barrier of water vapor communication between the Qinghai-Tibet Plateau and the Indian Ocean, and continuously transports water vapor to the interior of the plateau, thus turning the southeast of the Qinghai-Tibet Plateau into a green world, and some places into southern Tibet.
Yarlung Zangbo River Bend: Overview of Nanjia Bend (Pailong Township, Linzhi County) around Jiafeng (Nanjia Peak). Broadly speaking, there are many big bends in Yajiang, including Guoguotang, which is about12km away from the county seat of Medog County.
Extended data:
The river passes through two high mountain canyons with an altitude of more than 6000 meters, forming a peculiar U-shaped bend around Nangarbawa Peak. The mountains are high and the valleys are deep, and the water is fast (besides, there is a big bend in Guoguotang, which is about12km away from Medog County).
From Paizhen to Pasigate (the bottom of southern Tibet), the lower reaches of 496.3 kilometers, the river surface elevation dropped sharply from 29 10 meter to 155 meter, with a natural drop of 2,755 meters, with an average gradient of 5‰, ranking first among the major rivers in the world.
Especially, the straight-line distance from 212km to Medog is less than 40km, but the water level difference is 2230m, the average gradient is 10.5‰, and the average discharge for many years is 1900m? /s, thus becoming the richest and most concentrated area in the world, where hydropower stations with an installed capacity of 40 million kilowatts can be built.
The Grand Canyon is the most mysterious area on the Qinghai-Tibet Plateau. Because of its unique tectonic position, it is regarded by scientists as "the keyhole to open the door of earth history"
Therefore, the geological survey of the Grand Canyon area is an important part of the geological survey of the Qinghai-Tibet Plateau. Henan Geological Survey Institute is one of the main forces in geological survey of Qinghai-Tibet Plateau.