Ancient Sediment Record Reveals New Details Of Four Global Warming And Cooling Booms
Monday, June 15, 2009 - 19:07
in Earth & Climate
Researchers here have used sediment from the deep ocean bottom to reconstruct a record of ancient climate dating back more than 500,000 years. The data were extracted from the top 65 feet of a 1,312 foot sediment core drilled in 2005 in the North Atlantic Ocean by the Integrated Ocean Drilling Program. The results provide some new information about the four glacial cycles that occurred during that period. While climate records from ice cores can show resolutions with individual annual layers, ocean sediment cores are greatly compressed with resolutions sometimes no finer than millennia. read more
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