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Lake Baikal: Fire and Ice

... dissolved methane in the lake is more than 800 tons. To maintain this concentration, about 80 tons of gas must come into the lake each year (Granin et al. , 2013). Moreover, Lake Baikal is the only freshwater body with enormous confirmed deposits of gas hydrates (discovered in 1997), a unique “preserve” of methane and water, with a bulk gas content of 150–180 units per volume! Gas hydrates are known to form at low temperatures and high pressures, and these particular conditions exist in deepwater ...

Modified: 20.02.2017
gas hydrates , methane , Baikal , Lake Baikal , methanotrophs , mud volcanoes
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The Bermuda Triangle of Yamal

... m. They revealed rock layers differing in electrical resistivity and faults and allowed determination of the lower permafrost boundary. A horizon with abnormally high resistivity was detected at depths of 60–70 m; presumably, it was saturated with gas hydrates. How did the crater arise? Natural gas hydrates , or clathrates , are crystalline compounds forming from water and gas in a certain range of temperatures and pressures. As early as in 1961, Soviet geologists, including A. A. Trofimuk ...

Modified: 30.08.2015
Yamal Peninsula , crater , gas hydrates , geophysical methods , electrical resistivity tomography (ERT) , time-domain electromagnetics (TEM)
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MIR Dives. Notes from the Bottom of Lake Baikal

... hundred dives were made. The expedition was charged with hydrogeological and paleogeographical studies; morphology investigation of the Lake bottom; examination of orifices of underwater thermal springs and mud volcanoes as well as accumulations of gas hydrates and oil shows; monitoring the current condition of the Lake's ecosystem; studies of the flora and fauna; and obtaining accurate data on tectonic processing taking place at the Lake bottom. Well-known singers, writers, and politicians who ...

Modified: 30.12.2009
MIR-1 , MIR-2 , gas hydrates , sponges , Baikal oilfish , Akademicheskiy Ridge
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Fossil Fuel of the Future

Gas hydrates are ice-like mixtures of gases and water, in which gas molecules are trapped within the framework of water molecules. Each volume of hydrate may contain as much as 150—180 volumes of gas. The total amount of methane that occurs in hydrated ...

Modified: 25.04.2007
gas hydrates , gas hydrate deposits
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Weather Forecasting Back for 8 Million Years

... uppermost sediments, and we had to pull the over 1400 m long rig up aboard the barge for cleaning out. That was an arduous job. 28.2.1998.…Only 40 meters of continuous coring has been possible. The coordination panel takes a decision to search for gas hydrates which hypothetically exist in the bottom sediments.* The geographic position of Baikal in high latitudes, where insolation is the most variable due to the orbit inclination, makes the lake very sensitive to insolation changes. On the other ...

Modified: 30.01.2006
Lake Baikal , Baikal , sediments , drilling , paleoclimate , sedimentary deposits , climate , gas hydrates
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Gas Hydrates in a Freshwater "Ocean"

Lake Baikal is unique in many ways: it is the world deepest and one of the largest lakes, it is known for its pristine water, and it contains a unique endemic flora and fauna. But it is also the only place on Earth where gas hydrates occur in a freshwater environment. The reported results were obtained by the international team of scientists as part of the joint Belgian-Russian project supported by grants from INTAS, SB RAS, and RFBR (1998—2004). Project coordinators: ...

Modified: 30.09.2004
methane , gas hydrates , water , Lake Baikal , volcanos , sediments , mud , water quality
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