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http://www.russia-ic.com/news/show/11083/
In addition, according to http://www.strf.ru/material.aspx?CatalogId=222&d_no=35210, the lake's rim is tilted Northwards by 0.12°. The trough's slopes are steep, with steepness angle about 15°, and their height can exceed 1500 m. The southern part of the lake, occupying an area of 70×10 kms are deeper. Mean depth there is about 800 m, but there is a single bowl 1050 m deep. The northern part (180×60 km) are shallower, its mean depth is 300 m, the deepest places are 450 m. This part of the lake has hilly landscape.
The subglacial lake Vostok is completely isolated in its trough. Its surface is below mean sea level and begins at 450 m below the edge of the trough. Scientists are looking forward to finding out if there had been any water level changes or subglacial floods in the Vostok.
Bottom of Lake Vostok Mapped
22.11.2010
Bottom of Lake Vostok Mapped
Russian polar explorers and scientists have mapped the bottom of famous Antarctic subglacial lake Vostok. Information for mapping was obtained by means of complex seismic and radar investigations.
Lake Vostok is the largest subglacial Antarctic lake, known to date. Polar explorers have studied the lake since 1900s. Lake’s coastline is 1030 kilometers long, and its water surface area is 15.5 thousand square kilometers.
For mapping the lake’s bottom Russian researchers have developed unique techniques. Seismic sounding required exploding 5-6 lines of detonating cord – they generated powerful waves, which haven’t been blanketed by 100-meter thick layer of snow.
Lake Vostok appears to be a 310x100 km trough full of water with a hilly bottom. Mean depth is 800 m, maximum depth reaches 1050 m. The trough is completely isolated, despite that it is surrounded by 37 smaller lakes, and lies below sea level. Further research will reveal more interesting facts.
In addition, according to http://www.strf.ru/material.aspx?CatalogId=222&d_no=35210, the lake's rim is tilted Northwards by 0.12°. The trough's slopes are steep, with steepness angle about 15°, and their height can exceed 1500 m. The southern part of the lake, occupying an area of 70×10 kms are deeper. Mean depth there is about 800 m, but there is a single bowl 1050 m deep. The northern part (180×60 km) are shallower, its mean depth is 300 m, the deepest places are 450 m. This part of the lake has hilly landscape.
The subglacial lake Vostok is completely isolated in its trough. Its surface is below mean sea level and begins at 450 m below the edge of the trough. Scientists are looking forward to finding out if there had been any water level changes or subglacial floods in the Vostok.