Which lake is the deepest in the world?

Twenty-five million years ago, in the southern part of the central Siberian Plateau, a long and narrow valley was formed due to strong crustal fracture activity, and the cliffs on both sides were as high as1200m, thus giving birth to the deepest lake in the world-Lake Baikal. Like Lake Tanganyika and Lake Malawi in Africa, it is a typical rift lake. Lake Baikal extends 636 kilometers from northeast to southwest, but its width is only 25 ~ 79.5 kilometers, slightly crescent-shaped; The lake is 456 meters above sea level, with an average depth of 730 meters. The deepest point in the center of East Lake in Olyho Island is 1620 meters, which is the deepest lake record in the world. Lake Baikal covers an area of about 365,438+0,500 square kilometers, ranking eighth in the world. However, due to the water depth, its water storage capacity reaches 23,000 cubic kilometers, which is equivalent to the sum of the water storage capacity of the Great Lakes in North America, accounting for about one-fifth of the total water storage capacity of freshwater lakes in the world, and it is the largest freshwater reservoir in the world. There are 336 rivers, large and small, flowing into Lake Baikal, of which the Salinger River in the southeast of the lake accounts for more than half of the total water flowing into the lake. However, the only river that flows out of Lake Baikal is the Angara River in the southwest of the lake. The lake runs along the steep river bed, which can maintain huge flow and velocity even in dry summer, and its hydraulic reserves are quite rich. Lake Baikal plays an important role in regulating the climate in the lakeside area. Every year from early June to mid-May, the lake freezes, releasing latent heat, reducing the severe cold in winter. In early summer, the lake thawed, which absorbed a lot of heat and reduced the degree of heat. But the lake itself is always cold, even in the warmest month, the temperature of the lake is only 7 ~ 9 degrees Celsius.

The most interesting thing about Lake Baikal is its strange biological world. There are many creatures in the lake, which are not found in other rivers and lakes in Siberia. Only in the lakes of southern China, Indian, Balkan and even North America can they be found. Otherwise, it will be excavated in the strata tens of millions or even hundreds of millions of years ago. And the water in Lake Baikal is not salty at all. The Central Siberian Plateau where it is located has not been submerged by seawater for more than 500 million years, but the lake is full of marine life, such as seals, conchs, sponges, lobsters and so on. These have not been completely solved. According to statistics, there are 600 species of plants and 1200 species of animals in Lake Baikal, of which about three quarters are endemic to the lake.