Ice core heats up Antarctica.A U.S. drilling crew in Antarctica has pulled up a 554-meter-long ice core packed with information about how the climate has behaved over the last 20,000 to 30,000 years. The success of this project sets the stage for American researchers to embark on Verb 1. embark on - get off the ground; "Who started this company?"; "We embarked on an exciting enterprise"; "I start my day with a good breakfast"; "We began the new semester"; "The afternoon session begins at 4 PM"; "The blood shed started when the partisans a much more ambitious deep-drilling project in Antarctica within the next several years. The team drilled in McMurdo Dome, located about 150 kilometers west of the main U.S. research camp in Antarctica. The researchers hope to use the ice core to help decipher Same as decrypt. how the Ross Ice Shelf Ross Ice Shelf World's largest body of floating ice. It lies at the head of the Ross Sea, which forms an enormous indentation in Antarctica. Its area is estimated to be about the size of France. and local glaciers This is a list of glaciers. Due to somewhat sparse information, some glaciers, especially those in the tropics, may no longer exist as listed. This is especially true for glaciers in Africa and New Guinea. have advanced and receded over the millennia. Analysis of the core can also address questions about global climate change, says project leader Pieter M. Grootes of the University of Washington in Seattle. The crew at McMurdo Dome used the same drill that had recently bored a 3,200-meter-deep hole in Greenland. That ice core, reaching back 250,000 years, revealed that Earth has a naturally unstable unstable, adj 1. not firm or fixed in one place; likely to move. 2. capable of undergoing spontaneous change. A nuclide in an unstable state is called radioactive. An atom in an unstable state is called excited. climate- a finding Grootes and others hope to confirm in the future by drilling a deep core in Antarctica. |
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