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Sunday, 31 December 2006 02:49
Polarstern’s biggest fish catch in 24 years of research in Antarctic waters. New hope for commercial fisheries? Quite the opposite, a good catch doesn’t necessarily mean that depleted stocks have recovered. Five tons of marbled Antarctic cod (Notothenia rossii), now that was surely a big surprise to scientists and crew alike considering that previous and subsequent hauls barely ever reaped such plentiful harvests. Their shimmering silver and dark blue bodies, which can grow up to 70cm, were piled on the aft deck of Polarstern. In combination with previous stock assessments, fisheries biologists onboard interpreted the catch as a sampling of a discrete, small-scale aggregation of this fish species. ...
Wednesday, 20 December 2006 09:24
Aboard Polarstern, bathymetry — the mapping of the seafloor using sonar — is conducted by an international working group. In recent days, they have found a distinct elevation at the seafloor of the Southern Ocean. This structure rises 600 m above ground in an otherwise featureless seascape and is situated about 450 km north of the Antarctic continent. It closely resembles an underwater volcano, presumably still active, which has never been charted on a map. This finding was reported by Elena Pugacheva from the Geographical Institute Moscow and Jan-Hendrik Lott from the University of Karlsruhe. During the expedition, long distances are covered between the continents of Africa, Antarctica and South America. Mapping of the seafloor takes place throughout the journe...
Tuesday, 12 December 2006 08:06
“Polarstern” is currently anchored right next to the ice shelf, which is formed by layers and layers of snow accumulated over thousands of years forming a vertical cliff dropping more than 30m to the sea (surface). Fuel and other goods are being discharged to supply Germany’s Neumayer station in Antarctica. At longitude 8°48' west, this part of East Antarctica’s ice cap is considered stable. The complete opposite is true for the Antarctic Peninsula heading towards the southern tip of South America. This area will form the backdrop for a scientific mission of an expedition that started two weeks ago in Cape Town. During the past 15 years atmospheric warming led to the collapse of major parts of the Larsen A and B ice shelves. These areas together made up only one percent of Antarc...
Calendar of Events
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Thu, 16 Dec 2010Missatge 10: Un cervell realment...
Wed, 15 Dec 2010Ice Core Goes on Display...
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Tue, 14 Dec 2010Missatge 9: Les peculiaritats de...
Mon, 13 Dec 2010Another Use for Antarctic Icebergs?