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Latest Ice sheet Stories

Image 1 - Paleoclimate Record Points Toward Potential Rapid Climate Changes
2011-12-10 04:29:55

New research into the Earth's paleoclimate history by NASA's Goddard Institute for Space Studies director James E. Hansen suggests the potential for rapid climate changes this century, including multiple meters of sea level rise, if global warming is not abated. By looking at how the Earth's climate responded to past natural changes, Hansen sought insight into a fundamental question raised by ongoing human-caused climate change: "What is the dangerous level of global warming?" Some...

2011-12-06 12:38:20

Accelerated melting of two fast-moving outlet glaciers that drain Antarctic ice into the Amundsen Sea Embayment is likely the result, in part, of an increase in sea-surface temperatures in the tropical Pacific Ocean, according to new University of Washington research. Higher-than-normal sea-level pressure north of the Amundsen Sea sets up westerly winds that push surface water away from the glaciers and allow warmer deep water to rise to the surface under the edges of the glaciers, said...

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2011-12-05 12:44:44

Scientists have created a detailed map called BEDMAP of Antarctica's rock bed that lies underneath its icy surface. The map gives a view of the landscape beneath the ice, and incorporates decades of survey data acquired by planes, satellites, ships and even people on dogsleds. In the map, the highest elevations are marked in red/black, while the light blue color shows the extent of the continental shelf.  The lowest elevations are dark blue, some of which lie below today's seal...

Researchers To Drill Beneath Massive Antarctic Ice Shelf
2011-11-10 04:49:24

[ Watch the Video ] An international team of researchers funded by NASA and the National Science Foundation (NSF) will travel next month to one of Antarctica's most active, remote and harsh spots to determine how changes in the waters circulating under an active ice sheet are causing a glacier to accelerate and drain into the sea. The science expedition will be the most extensive ever deployed to Pine Island Glacier. It is the area of the ice-covered continent that concerns scientists...

Extreme Melting On Greenland Ice Sheet Reported
2011-10-26 03:32:48

Glacial Melt Cycle Could Become Self-Amplifying, Making it Difficult to Halt The Greenland ice sheet can experience extreme melting even when temperatures don´t hit record highs, according to a new analysis by Dr. Marco Tedesco, assistant professor in the Department of Earth and Atmospheric Sciences at The City College of New York.  His findings suggest that glaciers could undergo a self-amplifying cycle of melting and warming that would be difficult to halt. “We are...

Scientists To Study Underground Lake In Antarctica
2011-10-11 09:43:06

An Antarctic lake hidden under 1.8 miles of ice in the western region of the continent could reveal what life on Earth looked like a million years ago and could narrow down the search for extraterrestrial life, as well as give scientists clues to future climate impacts, according to a British expedition taking up the study. Expedition members will use hot water to melt down through the nearly 2-mile-thick ice to reach Lake Ellsworth, which has been isolated from the outside world for more...

Canadian Arctic Ice Shelves Vanishing
2011-10-01 07:30:35

One of Canada's Arctic ice shelves has virtually vanished, and several others have diminished significantly over the summer, according to a pair of the nation's foremost experts on the subject. Luke Copland, an associate professor in the University of Ottawa's geography department, and Derek Mueller, an assistant professor at Carleton University's geography and environmental studies department, co-authored research reporting the disintegration of both the Serson Ice Shelf and the Ward Hunt...

2011-09-08 20:55:42

An international team of scientists, led by Dr Stephen Barker of Cardiff University, has produced a prediction of what climate records from Greenland might look like over the last 800,000 years. Drill cores taken from Greenland's vast ice sheets provided the first clue that Earth's climate is capable of very rapid transitions and have led to vigorous scientific investigation into the possible causes of abrupt climate change. Such evidence comes from the accumulation of layers of ancient...

Image 1 - AFTER - Next Giant Ice Island Poised To Break Free From Greenland
2011-09-02 07:53:08

  Researcher Alun Hubbard, of the Center for Glaciology at Aberystwyth University said he was rendered “speechless” when a glacier about twice the size of Manhattan he and his team have been tracking appeared close to breaking off, reports MSNBC. In 2009, scientists installed GPS masts on the Petermann Glacier to track its movement and in August of last year, the “calving” event of the glacier, where it separates itself from land, began following the tides...


Word of the Day
siliqua
  • A Roman unit of weight, 1⁄1728 of a pound.
  • A weight of four grains used in weighing gold and precious stones; a carat.
  • In anatomy, a formation suggesting a husk or pod.
  • The lowest unit in the Roman coinage, the twenty-fourth part of a solidus.
  • A coin of base silver of the Gothic and Lombard kings of Italy.
'Siliqua' comes from a Latin word meaning 'a pod.'
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