You're here: My Science Blogging » Discovery » Article: Current Melting Of Greenland’s Ice Mimicks 1920s-1940s Event
Yessi Pratiwi — December 16, 2007 / 6:25 pm
Greenland ’s ice sheet contains at least 10 percent of the world’s freshwater AND it has been losing more than 24 cubic miles (100 cubic kilometers) of ice annually for the last five years and 2007 was a record year for glacial melting there.
Recently, annual meeting of the American Geophysical Union in San Francisco reported a surprising discovery. Two researchers spent months scouring through old expedition logs and reports, reviewed 70-year-old maps and photos, and found that the effects of the current warming and melting of Greenland’s glaciers that has alarmed the world’s climate scientists occurred in the decades following an abrupt warming in the 1920s.
They concentrated on three large glaciers flowing out from the central ice sheet towards the ocean – the Jakobshavn Isbrae, the Kangerdlugssuaq and the Helheim.
Adam Herrington, co-author on this paper and a student in the School of Earth Sciences found a map from 1932 and an aerial photo from 1933 that documented how, during a warm period, the Kangerdlugssuaq Glacier lost a piece of floating ice that was nearly the size of New York ’s Manhattan Island . In 2002 to 2003, that same glacier retreated another 3.1 miles (5 kilometers), and that it tripled its speed between 2000 and 2005.
The fact that recent changes to Greenland’s ice sheet mirror its behavior nearly 70 years ago is increasing researchers’ confidence and alarm as to what the future holds. Adapted from here
Post to: delicious, Digg, ma.gnolia, Stumbleupon
Search only in this blog
Search across Asia Blogging Network
More? Go to Asia Blogging Network Column section.
ibnusomowiyono on Music For Heart Disease Healing ibnusomowiyono on Virtual Heart Siturir on Genetic Roots of Synaesthesia Discovered ibnusomowiyono on Hydrogen Technology as Our Next Fuel? LnddMiles on Engineers Make First ‘Active Matrix’ Display Using Nanowires, Research Reported p4ladin on Hydrogen Cars With New Storage System Fitri Wulandari on Birth Control Pill Gives Long-lasting Protection Against Ovarian Cancer? Flash on Giant Sperm Found in Microfossil Ahmad on The Contactless Payment swine flu in Texas on Mobile Phones Affects Animal’s Memory, Research FoundA feed could not be found at http://3gweek.net/feed/
A feed could not be found at http://feeds.feedburner.com/transjogja
Ikuti diskusi, tuliskan komentar Anda.