Sustentabilidade
Read More http://www.wired.com/wiredscience/2010/08/ice-breaks-off/#ixzz0wX59D8Q5
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Sustentabilidade
Enorme bloco de gelo (do tamanho de Manhattan!) desagregou-se dum glaciar na Gronelândia
A 3 meses para a COP 16 no México e nenhum acordo global do clima à vista. Enquanto isso, a temperatura média do planeta se eleva.
Fonte: Wired Science, 7 de AgostoA 100-square-mile block of ice 600 feet thick has calved off one of the largest ocean-bordering glaciers in Greenland. The Arctic hasn’t lost a chunk of ice that large since 1962.
“In the early morning hours of Aug. 5, an ice island four times the size of Manhattan was born in northern Greenland,” oceanographer Andreas Muenchow of University of Delaware said in a press release Aug. 6. “The freshwater stored in this ice island could keep the Delaware or Hudson rivers flowing for more than two years. It could also keep all U.S. public tap water flowing for 120 days.”
Petermann Glacier is located about 600 miles south of the North Pole. Muenchow and a team of scientists have been studying it since 2003. They had been expecting the glacier to calve, but this piece is much larger than anyone had anticipated.
The glacier lost about one-quarter of its 43-mile-long floating ice-shelf.
The new chunk will enter Nares Straight, an ocean channel between Canada and Greenland, float towards Newfoundland and Labrador, and ultimately end up in the Atlantic Ocean.The massive calving of the ice-shelf is likely part of a natural cycle for Petermann Glacier rather than a dramatic change that has never been seen before, Muenchow said.
“Petermann Glacier has stayed about the same size over the last century,” Muenchow said. “Well, up until yesterday.”
See Also:
- Earth From Space: Greenland Glacier Shrinks Overnight
- Stunning Views of Glaciers Seen From Space
- NASA Deploys Rubber Ducks to Track Glacier Water
- Animation of Giant Iceberg Collision as Seen From Space
- Tipping Point Not Likely for Arctic Sea Ice
Follow us on Twitter @jessmcnally and @wiredscience, and on Facebook.
Images: 1) Time-series animation based on satellite data from 31 July, 4 August, and 7 August 2010 showing the breaking of the Petermann glacier and the movement of the new iceberg towards Nares Strait/ European Space Agency. 2) Andreas Muenchow
Read More http://www.wired.com/wiredscience/2010/08/ice-breaks-off/#ixzz0wX59D8Q5
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- Sinais Do Tempo, Sinais Do Clima
Foram 36 "posts" em que ao longo dos últimos 17 meses aqui se referiu o tema do aquecimento global e das alterações climáticas. Sobretudo apelando a uma mudança de comportamentos com vista à redução de emissões de CO2. A luta pela exigência...
- "okeanos" Must Live, Be Alive!
RJ Muna shoots Jodi Lomask as part of Capacitor's "Okeanos" - a dance-circus sensory immersion dedicated to improving human-ocean relations. Set to a track by Beats Antique. Notícias muito preocupantes sobre o mau estado de saúde dos oceanos:...
- Foto Da Semana- O Gelo E As Montanhas
Kurt Cuffey overlooking the glacier-carved Bowen River drainage (middle), Mount Tutoko (far right) and Milford Sound (left) in Fiordland National Park of New Zealand. (Photo by Johnny Sanders)" Notícia relacionada: Novel technique reveals how glaciers...
- Green Power Island: A Vision For Renewable Energy Storage
With plans already drawn for several locales, including Copenhagen, Bahrain, Jiangsu, and Tampa, Florida, each island is designed to enhance the surrounding environment and utilize the space with mixed used capabilities. Built primarily around storage...
- Alien Forests, Oceans And Skies: Genetically Engineered Forests, Altering The Chemistry Of The Atmosphere And Hydrosphere
DOC- A Silent Forest: The Growing Threat, Genetically Engineered Trees by Rady Ananda Global Research, September 8, 2010 Imagine our declining pollinators – bees, moths, butterflies and bats – coming upon thousands of acres of toxic trees,...