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Latest West Antarctica Stories

Operation IceBridge: Watching The Birth Of An Iceberg
2011-11-03 04:41:08

[ Watch the Video ] After discovering an emerging crack that cuts across the floating ice shelf of Pine Island Glacier in Antarctica, NASA's Operation IceBridge has flown a follow-up mission and made the first-ever detailed airborne measurements of a major iceberg calving in progress. NASA's Operation Ice Bridge, the largest airborne survey of Earth's polar ice ever flown, is in the midst of its third field campaign from Punta Arenas, Chile. The six-year mission will yield an...

Image 1 - Glacier Could Raise Global Sea Levels In 20 Years Less Than Thought
2011-10-27 11:53:03

Researchers said on Wednesday that an Antarctic glacier with the potential to raise global sea levels could speed up its retreat within 20 years. Columbia University researchers said the Thwaites Glacier is expected to speed up once it detaches from an underwater ridge it is currently attached too. The ridge appears to be slowing the glacier's slide into the sea, but the finding says the glacier is losing its grip on a previously unknown ridge. The researcher said this explains why...

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2011-06-27 09:35:00

A major glacier is undermined from below Stronger ocean currents beneath West Antarctica's Pine Island Glacier Ice Shelf are eroding the ice from below, speeding the melting of the glacier as a whole, according to a new study in Nature Geoscience. A growing cavity beneath the ice shelf has allowed more warm water to melt the ice, the researchers say"”a process that feeds back into the ongoing rise in global sea levels. The glacier is currently sliding into the sea at a clip of four...

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2010-12-09 11:00:00

Amundsen Sea Polynya International Research Expedition (ASPIRE) Combines Research and Education In a unique and complex example of "science diplomacy," teams of U.S. and Swedish scientists are sailing this month aboard two research vessels to study the ecology of the Amundsen Sea, one of the least-explored and most productive bodies in Antarctic waters, and to gauge the potential effects of a changing climate on the Southern Ocean. The joint American and Swedish expedition, involving the U.S....

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2010-10-22 10:18:49

Scientists returned this week to the Southern Hemisphere where NASA's Operation IceBridge mission is set to begin its second year of airborne surveys over Antarctica. The mission monitors the region's changing sea ice, ice sheets and glaciers. Researchers will make flights from Punta Arenas, Chile, on NASA's DC-8, a 157-foot airborne laboratory equipped with a suite of seven instruments. The focus is on re-surveying areas that are undergoing rapid change and embarking on new lines of...

2010-10-22 08:00:00

WASHINGTON, Oct. 22 /PRNewswire-USNewswire/ -- Scientists returned this week to the Southern Hemisphere where NASA's Operation IceBridge mission is set to begin its second year of airborne surveys over Antarctica. The mission monitors the region's changing sea ice, ice sheets and glaciers. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) Researchers will make flights from Punta Arenas, Chile, on NASA's DC-8, a...

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2010-07-28 07:19:48

Antarctica may not be the world's largest landmass -- it's the fifth-largest continent -- but resting on top of that land is the world's largest ice sheet. That ice holds more than 60 percent of Earth's fresh water and carries the potential to significantly raise sea level. The continent is losing ice to the sea, and scientists want to know how much. Antarctica's ice generally flows from the middle of the continent toward the edge, dipping toward the sea before lifting back up and floating....

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2010-06-21 06:00:00

A robotic yellow submarine that has been launched deep beneath the Pine Island Glacier has helped to solve a mystery about one of Antarctica's fastest-melting glaciers, adding to unease about how climate change may lead to higher world sea levels, scientists reported on Sunday in the journal Nature Geoscience. Scientists captured ocean and sea-floor measurements using the robotic submarine, called Autosub. The team found that the glacier was no longer resting on a sub-sea ridge that had...

2009-10-08 10:30:00

WASHINGTON, Oct. 8 /PRNewswire-USNewswire/ -- NASA begins a series of flights Oct. 15 to study changes to Antarctica's sea ice, glaciers and ice sheets. The flights are part of Operation Ice Bridge, a six-year campaign that is the largest airborne survey ever made of ice at Earth's polar regions. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) Researchers will work from NASA's DC-8, an airborne laboratory equipped with laser mapping instruments, ice-penetrating radar...

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2009-09-23 13:19:10

The most comprehensive picture of the rapidly thinning glaciers along the coastline of both the Antarctic and Greenland ice sheets has been created using satellite lasers. The findings are an important step forward in the quest to make more accurate predictions for future sea level rise. Reporting this week in the journal Nature researchers from British Antarctic Survey and the University of Bristol describe how analysis of millions of NASA satellite measurements* from both of these vast ice...


Word of the Day
negawatt
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.