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Weather Forecasting Back for 8 Million Years

... in sedimentary layers, which bear features of changes in the sea level, warm and cold oceanic currents, air circulation, and waxing/waning cycles of ice sheets. People only have to get and to decode the record. The first thing is to drill a hole in sediments and to recover a core. Say, a hole in the bottom of the world deepest lake… It has been found out that the climate history of the past tens million years consists of intermittent glacial and interglacial rhythms, possibly, because insolation ...

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"

... 250 m. The overwhelming majority of direct observational data on gas hydrates pertains to deep-water subaquatic regions — continental slopes and rises, where they occur at high pressures and low temperatures. Gas hydrates can exist within rocks and sediments in a zone where they are thermodynamically stable. This is the Hydrate Stability Zone (HSZ) that extends downwards from the cold seafloor in water depths greater than about 500 m in non-polar, open ocean conditions, and in permafrost regions ...

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