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Latest Antarctic ice sheet Stories

4be9326a4558b97c46284d6e4b67c020
2009-05-05 10:38:55

Most comprehensive seabed image of Amundsen Sea Embayment Motorway-sized troughs and channels carved into Antarctica's continental shelves by glaciers thousands of years ago could help scientists to predict future sea-level rise according to a report in the journal Geology this month (May). Using sonar technology from onboard ships, scientists from British Antarctic Survey (BAS) and the German Alfred Wegener Institute (AWI) captured the most extensive, continuous set of images of the seafloor...

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2009-03-30 14:26:54

Although the International Polar Year officially came to a close in February, NASA is continuing to push the frontiers of polar science from space, the air and the surface of ice. On Monday, NASA embarks on the first of two airborne field campaigns in the Arctic to take a closer look at Greenland and Iceland ice sheets and the region's sea ice and glaciers. From space, NASA's Ice, Cloud, and land Elevation Satellite, known as ICESat, is completing a seasonal survey of the world's ice sheets...

21d7b19d9dac3c1d45e78c6dfedeea731
2009-03-30 07:40:00

Dust trapped deep in Antarctic ice sheets is helping scientists unravel details of past climate change. Researchers have found that dust blown south to Antarctica from the windy plains of Patagonia "“ and deposited in the ice periodically over 80,000 years "“ provides vital information about glacier activity. Scientists hope the findings will help them to better understand how the global climate has changed during the past ice age, and so help predict environmental changes in the...

2009-03-18 13:54:57

U.S. climatologists say they've determined the West Antarctic ice sheet changes rapidly over the eons, most influenced by ocean temperatures. Researchers at Pennsylvania State University and the University of Massachusetts said their findings were based on modeling 5 million years of changes in the ice sheet. We found that the West Antarctic ice sheet varied a lot, collapsed and regrew multiple times over that period, said Penn State senior scientist David Pollard. The ice sheets in our model...

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2009-03-18 15:45:00

Two new reports published in the journal Nature illustrate possible flooding due to climate change and a meltdown of the massive West Antarctic ice sheet. In one study, researchers used soil cores below the Ross ice shelf to show that the massive melt took place between 3 million and 5 million years ago. That collapse amounted to an increase of more than 16 feet to global sea level, researchers noted. "What we're seeing in the past would lead us to believe that we are on track for losing...

69ee088e668552c8d486b1f91217c9981
2009-03-17 16:27:25

A robot submarine studying the underbelly of an Antarctic ice shelf has found evidence of rising sea levels, scientists reported on Tuesday. Developed by UK's National Oceanography Center of Southampton, Autosub is an Automated Underwater Vehicle (AUV). It has completed six missions traveling under Pine Island Glacier, an extension of the West Antarctic ice sheet in the Amundsen Sea. The sub uses sonar to create a three-dimensional map of the seabed and the underside of the ice. Scientists...

b64f03990332c08199fc88e01c1ecbaa1
2009-03-17 15:36:29

A poll of experts finds that a dramatic climate shift such as the death of the Amazon forest or the disappearance of Greenland's ice is more than 50 percent likely during the next 200 years under the worst case global warming scenarios. The survey of 52 scientists also revealed concerns that long-term global warming would spur drastic changes such as the disintegration of the ice sheet in West Antarctica, something that would raise world sea levels. "There's concern about the risks of massive...

1d0648ce555b538c0db8891b243787c71
2009-02-27 07:35:00

A team of Yale geologists has a new perspective on the greenhouse-to-icehouse shift where global climate changed from an ice-free world to one with massive ice sheets in the Antarctic nearly 34 million years ago. The study, which is detailed in the February issue of Science, disproves a long-held theory that massive ice growth was accompanied by very little global temperature change. According to the report, there was an estimated 18°F drop in latitude temperatures, and nearly as great a...

6be309a38e1d686fae439d5ab458dfb81
2009-02-24 12:40:00

Scientists said on Tuesday that Antarctica's ice is covering up jagged mountains the size of the Alps, providing new clues about the vast ice sheet that will raise world sea levels if even a fraction of it melts, Reuters reported. First detected by Russian scientists 50 years ago at the heart of the East Antarctic ice sheet using radar and gravity sensors, the experts made the first detailed maps of the Gamburtsev subglacial mountains. Fausto Ferraccioli, a geophysicist at the British...

6538f35d37ee2eb4fe14d1887225c8351
2009-02-24 07:20:00

A group of environment ministers landed on a remote corner of Antarctica on Monday to learn more about how the melting continent may threaten the Earth. The parka-clad representatives from more than twelve nations, including the U.S., China, Britain and Russia, were to meet scientists from the U.S. and Norway who were arriving after the last leg of a two-month, 1,400-mile trip over the ice from the South Pole. The group will gain "hands-on experience of the colossal magnitude of the Antarctic...


Latest Antarctic ice sheet Reference Libraries

Antarctica
2013-02-18 10:15:24

Antarctica is the Earths southernmost continent; it contains the geographic South Pole. It’s situated in the Antarctic area of the Southern Hemisphere, almost completely south of the Antarctic Circle, and is bordered by the Southern Ocean. It’s the fifth-largest continent at 5.4 million sq miles. On average, it is the driest, coldest, and windiest continent as well as having the highest average elevation of all the continents. Considered a desert, the annual precipitation is only 8...

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Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
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