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Latest Ice sheet Stories

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2009-09-11 14:50:00

Scientists are trying to determine what occurred in Greenland's history to cause its glaciers to rapidly melt, and what implications it might have for the earth's future in light of looming global warming. In 2005, scientists noticed that Greenland's Helheim Glacier had nearly doubled in speed as it moved through a river at a pace of 100 feet per day. The rapid movement caught researchers by surprise and sparked concerns that it could be a sign of a massive melting of the Greenland's ice...

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2009-09-03 05:45:00

Greenland's glaciers are dumping ice into the Atlantic Ocean at an alarming rate, according to a statement by the environmental group Greenpeace on Wednesday. Increasingly warm temperatures have caused glaciers to melt over time and shed masses of ice that eventually slip into fjords and the sea. Greenland's Helheim glacier, which is four miles wide and almost one mile thick, moves approximately 25 yards a day, Greenpeace said in a statement. The group said that is double the speed as when...

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2009-08-14 12:25:00

Experts say one of the largest glaciers in Antarctica is thinning four times faster than it was 10 years ago, BBC News reported. The surface of the ice at the Pine Island glacier in west Antarctica is now dropping at a rate of up to 50 feet a year, according to a recent study of satellite measurements. The work, by British scientists and published in Geophysical Research Letters, shows that the glacier has lowered by almost 300 feet since 1994, which has serious implications for sea-level...

2009-07-27 09:26:55

Fossil coral data and temperature records derived from ice-core measurements have been used to place better constraints on future sea level rise, and to test sea level projections.The results are published today in Nature Geoscience and predict that the amount of sea level rise by the end of this century will be between 7- 82 cm "“ depending on the amount of warming that occurs "“ a figure similar to that projected by the IPCC report of 2007.Placing limits on the amount of sea...

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2009-07-20 14:52:59

A new study published this week takes scientists a step further in their quest to understand how Antarctica's vast glaciers will contribute to future sea-level rise. Reporting in the journal Nature Geoscience, scientists from British Antarctic Survey (BAS) and University of Durham describe how a new 3-d map created from radar measurements reveals features in the landscape beneath a vast river of ice, ten times wider than the Rhine*, in the West Antarctic Ice Sheet. During 2007, two...

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2009-05-28 06:25:00

Scientists say that a number of the United States' most populous east coast cities "” including New York and Boston "” could see higher than expected rises in sea levels if Greenland's glacial-melt continues at its current rate. Researchers reported that sea levels on North America's northeast coast could potentially rise by 12 to 20 inches more than other coastal regions if the melting of Greenland's ice sheet continues to accelerate. Because of the tremendous quantity of fresh...

2009-05-27 11:24:17

Scientists say the ongoing melting of the Greenland ice sheet might drive more water than previously thought toward the U.S. and Canadian coastlines. Scientists led by the National Center for Atmospheric Research said if Greenland's ice melts at a moderate to high rate, ocean circulation by 2100 could shift, raising sea levels at New York, Boston, Halifax and other cities in the northeastern United States and Canada about 12-20 inches more than in other coastal areas. The research builds on...

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2009-05-15 11:20:00

Scientists have reevaluated the repercussions that the Earth would suffer if the West Antarctic Ice Sheet were to completely melt.In the journal Science, researchers said a complete melt of the WAIS would cause a 3.3 meter (10 ft) increase in sea level, compared to previous studies that predicted a rise of five to six meters.They added that even a rise of lesser levels would still have an impact on coastal cities, including New York."Sea level rise is considered to be the one...

2009-04-30 13:53:00

EDWARDS, Calif., April 30 /PRNewswire-USNewswire/ -- NASA will 'break the ice' on a pair of new airborne radars that can help monitor climate change when a team of scientists embarks this week on a two-month expedition to the vast, frigid terrain of Greenland and Iceland. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) Scientists from NASA's Jet Propulsion Laboratory, Pasadena, Calif., and Dryden Flight Research Center, Edwards, Calif., will depart Dryden Friday, May 1, on a...

2009-04-13 08:13:32

Gaining insights into the nature of sea ice In 1994, University of Utah mathematician Ken Golden went to the Eastern Weddell Sea for the Antarctic Zone Flux Experiment. The sea's surface is normally covered with sea ice, the complex composite material that results when sea water is frozen. During a powerful winter storm, Golden observed liquid sea water welling up and flooding the sea ice surface, producing a slushy mixture of sea water and snow that freezes into snow-ice. With his...


Word of the Day
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'