Tag Archives: glacier

Petermann glacier: large ice island breaks off Greenland

A giant ice island has broken off the Petermann Glacier in northern Greenland. A University of Delaware researcher says the floating ice sheet covers 100 square miles – more than four times the size of New York's Manhattan Island. Andreas Muenchow, who is studying the Nares Strait between Greenland and Canada, said the ice sheet broke off early Thursday. He says the new ice island was discovered by Trudy Wohlleben of the Canadian Ice Service. Not since 1962 has such a large chunk of ice calved in the Arctic, but researchers have noticed cracks in recent months in the floating tongue of the glacier. Also see: http://news.yahoo.com/s/livescience/20100806/sc_livescience/icechunklargerthanma… added by: JanforGore

NASA Witnesses Greenland Glacier Breakup, Retreat One Mile Overnight

image: NASA NASA ‘s just released so pretty dramatic satellite photos of the north branch of Greenland’s Jakobshavn glacier from July 6 and 7–when an area of ice 7 square kilometers in size (that’s more than twice the size of New York City’s Central Park), where the glacier meets the ocean, broke up over one night and the glacier retreated 1.5 kilometers inland. … Read the full story on TreeHugger

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NASA Witnesses Greenland Glacier Breakup, Retreat One Mile Overnight

Amazon Dam Stalled Once Again Thanks To Cameron, Weaver & Co

If you're ever tempted to question if there's anything legitimately positive that Hollywood entertainers do with their public presence, this ongoing saga playing out in the Amazon will set you straight. http://www.ecorazzi.com/2010/04/21/amazon-dam-stalled-once-again-thanks-to-camer… added by: sfinfgeld2

Iceland’s Volcano from the Air: Raw Video

An Icelandic volcano that has grounded planes across Europe is spitting lava but less ash, officials said on Monday (April 19), offering travellers hope that skies might clear at a faster rate. Iceland's erupting volcano sent powerful new tremors on Monday, but scientists said the ash plume rising above its crater was now reaching a height of about 2 km (1.2 miles). Last week, the tower of ash was as high as 11 km. An official at the Meteorological Office said ash production had fallen sharply and the nature of the eruption appeared to be changing. There was still a risk, he said, that molten rock could create new pathways for water to run into the crater, causing more explosions and a higher level of ash production. Scientists flying above the volcano told the Met Office lava had burst from the crater and onto the Eyjafjallajokull glacier that sits atop the volcano. The glacier, about 120 km (75 miles) southeast of Reykjavik, is normally a popular hiking ground. A reporter flying overhead in a helicopter told state radio the volcano was spitting chunks of lava as big as a jeep. The appearance of lava could suggest the eruption is moving into a less explosive phase. Fewer explosions would mean less of the menacing ash that has drifted to the European continent, choking the upper atmosphere with tiny particles of glass and pulverised rock and leading authorities to shut their airspace over safety fears. Police said there was almost no visibility near the glacier as ash saturated the air and covered agricultural fields with a layer of dust, which could be dangerous to animals if eaten. Farmer Katrin Birna Vidarsdottir who lives near the glacier said the cows were unaffected: “The cows are fine, they are calm in the cowsheds and just chewing their cud,” she said. Vidarsdottir's sheep that are normally white were now grey from the ash. She said the farm had an unusual guest during the ash fall: “We had one large guest in here who has fled in here from the ash, a raven. Good food for him in here, newly born lambs and ewes. We barely got him out. He acted quite strangely,” she said. On Sunday, rescue workers were helping farmers to gather horses that were outside when the ash started to fall. Veterinarian Ellert Thor Benediktsson said he had been pleasantly surprised to see the horses in such a good shape. “We went here yesterday into the cloud of ash and didn't like what we saw obviously. We didn't expect to see the horses as healthy as they were today,” he said. Any pick-up in ash production could spell trouble for more populated areas of the country later in the week. Weather forecasts show a shift in winds could cause ash to fall over Reykjavik for the first time since the volcano started to blow through the glacier. The Civil Protection Department prepared plans for such an occurrence, which could include the closure of schools. Someone who has just been through it, farmer Simon Sigurgeiersson, was philosophical about the ordeal: “You just say that what doesn't kill you only makes you stronger,” he said. Iceland sits on a volcanic hotspot in the Mid-Atlantic Ridge and has relatively frequent eruptions, though most happen in sparsely populated areas and pose little danger to people or property. added by: ctv

Hundreds of People Evacuated in Iceland Due to Volcanic Eruption

Volcanic Eruption at Fimmvorduhals in South Iceland may now be over; but a new eruption has now started under the Eyjafjallajokull glacier. Two aerial sources have this morning confirmed large amounts of steam coming off the glacier. One plane was 40 miles south and the other was 60 miles north-east. > > Read More Hundreds of People Evacuated in Iceland Due to Volcanic Eruption is a post from: Daily World Buzz Continue reading

Two huge icebergs let loose off Antarctica’s coast

Mammoth iceberg could alter ocean circulation AFP . SYDNEY – An iceberg about the size of Luxembourg that struck a glacier off Antarctica and dislodged another massive block of ice could lower the levels of oxygen in the world's oceans, Australian and French scientists said Friday. The two icebergs are now drifting together about 62 to 93 miles (100 to 150 kilometers) off Antarctica following the collision on Feb. 12 or 13, said Australian Antarctic Division glaciologist Neal Young. “It gave it a pretty big nudge,” Young said of the 60-mile (97-kilometer) -long iceberg that collided with the giant floating Mertz Glacier and shaved off a new iceberg. “They are now floating right next to each other.” The new iceberg is 48 miles (78 kilometers) long and about 24 miles (39 kilometers) wide and holds roughly the equivalent of a fifth of the world's annual total water usage, Young told The Associated Press. Experts are concerned about the effect of the massive displacement of ice on the ice-free water next to the glacier, which is important for ocean currents. This area of water had been kept clear because of the glacier, said Steve Rintoul, a leading climate expert. With part of the glacier gone, the area could fill with sea ice, which would disrupt the ability for the dense and cold water to sink. This sinking water is what spills into ocean basins and feeds the global ocean currents with oxygen, Rintoul explained. As there are only a few areas in the world where this occurs, a slowing of the process would mean less oxygen supplied into the deep currents that feed the oceans. “There may be regions of the world's oceans that lose oxygen, and then of course most of the life there will die,” said Mario Hoppema, chemical oceanographer at the Alfred Wegener Institute for Polar and Marine Research in Germany. added by: JanforGore

Arctic glacier to lose Manhattan-sized ‘tongue’

The biggest glacier in the Arctic is on the verge of losing a chunk of ice the size of Manhattan. A group of scientists and climate change activists who are closely monitoring the Petermann glacier’s ice tongue believe the rapid flow of ice is in part due to warm ocean currents moving up along the coast of Greenland, fuelled by global warming

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Arctic glacier to lose Manhattan-sized ‘tongue’