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NASA study finds glacier doing double time NASA NEWS RELEASE Posted: December 1, 2004 A NASA-funded study found the world's fastest glacier, Greenland's Jakobshavn Isbrae, doubled its speed of ice flow between 1997 and 2003. The study provides key evidence of newly discovered relationships between ice sheets, sea level rise and climate warming. The study appears in this week's issue of the journal Nature. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The stream's near-doubling of ice flow from land into the ocean is important, because this one glacier has increased the rate of sea level rise by approximately four percent of the 20th century rate of increase. The study used data from satellites and airborne lasers to derive ice movements. Synthetic aperture radar from Canada's RADARSAT and the European Space Agency's European Remote Sensing Satellites' data was used to measure the glacier's velocity. Researchers tracked distinct features in NASA Landsat satellite image pairs to determine velocities. "Other glaciers have thinned by over a meter a year, which we believe is too much to be attributed to melting alone," said Waleed Abdalati, a senior scientist at NASA's Goddard Space Flight Center, Greenbelt, Md., and co-author of the study. "We think there is a dynamic effect in which the glaciers are accelerating due to warming. This investigation furthers our understanding of ice-climate interactions of planetary systems." |
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Columbia Report A reproduction of the official accident investigation report into the loss of the space shuttle Columbia and its crew of seven. U.S. - U.K. - E.U. - Worldwide Apollo 14 DVD In January of 1971, Apollo 14 launched on an ambitious mission to land in the Fra Mauro highlands, a region of the moon more challenging than previous explorations. The flight captured in this DVD set.U.S. Apollo 11 Mission Report Apollo 11 - The NASA Mission Reports Vol. 3 is the first comprehensive study of man's first mission to another world is revealed in all of its startling complexity. Includes DVD!U.S. - U.K. - E.U. - Worldwide STS-115 patch The official crew patch for the STS-115 mission of space shuttle Atlantis to resume orbital construction of the International Space Station.U.S. - U.K. - E.U. - Worldwide |
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