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Latest Antarctic ice sheet Stories

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...

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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...

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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...

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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...

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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...

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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...

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2009-02-16 15:42:18

The Greenland and Antarctica ice sheets are melting, but the amounts that will melt and the time it will take are still unknown, according to Richard Alley, Evan Pugh professor of geosciences, Penn State. In the past, the Greenland ice sheet has grown when its surroundings cooled, shrunk when its surroundings warmed and even disappeared completely when the temperatures became warm enough. If the ice sheet on Greenland melts, sea level will rise about 23 feet, which will inundate portions of...

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2009-02-06 11:52:42

Sea levels could rise up to 21 feet in certain regions, according to a new report that takes into account new previously unconsidered factors. Geophysicists from the University of Toronto have previously reported that coastlines of North America and of nations in the southern Indian Ocean could face the greatest threats from a West Antarctic Ice Sheet collapse. But in a new report, scientists found that some estimates failed to take certain factors into account. "We aren't suggesting that a...

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2009-01-22 14:20:00

The Antarctic Peninsula juts into the Southern Ocean, reaching farther north than any other part of the continent. The southernmost reach of global warming was believed to be limited to this narrow strip of land, while the rest of the continent was presumed to be cooling or stable. Not so, according to a new analysis involving NASA data. In fact, the study has confirmed a trend suspected by some climate scientists. "Everyone knows it has been warming on the Antarctic Peninsula, where there...


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
mundungus
  • A stinking tobacco.
  • Offal; waste animal product; organic matter unfit for consumption.
This word comes from the Spanish 'mondongo,' tripe, entrails.