The collapse of a major Antarctic ice sheet will not raise global sea levels as much as previous projections suggest, a team of scientists has calculated. Writing in Science, the researchers said that the demise of the West Antarctic Ice Sheet (WAIS) would result in a sea level rise of 3.3m.
Previous estimates had forecast a rise in the region of five to six metres.
The United Kingdom made on Tuesday 11 May 2009, its submission in respect of its extended continental shelf around the Falkland Islands, and South Georgia and the South Sandwich Islands.
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 May issue of the journal Geology.
New ice break-offs with dimensions that can’t be properly noticed on the sea surface could become a serious risk for Antarctic cruise vessels in the near future, --even when they are scientifically monitored--, according to Chilean glaciologist Ricardo Jaña from the Chilean Antarctic Institute.
A massive Antarctic ice shelf is breaking up and pieces are expected to float away as icebergs over the course of the next few weeks. Scientists estimate the Wilkins Ice Shelf, which was originally about the size of Northern Ireland, had been in place for several hundred years. But satellite images taken over the past week show it has begun collapsing into the ocean as more than half a dozen similar Antarctic ice shelves have already done, said an article posted Tuesday by the European Space Agency on its website.
Countries with ties to Antarctica have adopted US proposals to limit tourism in the region, in a bid to protect the fragile ecosystem of the continent.
Polar bears, the poster children for Arctic climate change, are getting competition for the title of climate change casualty from the opposite side of the globe. Antarctica’s emperor penguins may face an equally dire fate. Like polar bears, these birds depend on sea ice for breeding and feeding habitat. Also like polar bears, emperor penguins seem unlikely to adapt to the rapid rate of sea ice extent change, according to a National Academy of Science study released by the National Centre for Atmospheric Research.
FALKLANDS, Argentine, and Chilean cruise ship tourism is likely to be negatively impacted as a result of a ban on the use and carriage of Heavy Gas Oil (HGO) in Antarctic waters by the International Maritime Organisation (IMO).
United States Secretary of State Hillary Clinton called on Monday for tighter regulation of Antarctic tourism as delegates from 47 countries began a review conference of the now 50-year-old Antarctic Treaty.
An ice bridge which held a vast Antarctic ice shelf in place shattered at the weekend and could herald a wider collapse linked to global warming, a leading scientist has warned. It's amazing how the ice has ruptured. Two days ago it was intact, said David Vaughan, a glaciologist with the British Antarctic Survey.