Archive for December, 2014

Distribution of fish on northeast US shelf influenced by both fishing, climate

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Scientists studying the distribution of four commercial and recreational fish stocks in Northeast US waters have found that climate change can have major impacts on the distribution of fish, but the effects of fishing can be just as important and occur on a more immediate time scale. The four species studied -- black sea bass, scup, summer flounder, and southern New England/Mid-Atlantic Bight winter flounder -- have varied in abundance and have experienced heavy fishing pressure at times over the past 40 years....

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Methane is leaking from permafrost offshore Siberia

Images of craters on Yamal Peninsula, caused by collapsing permafrost, have become world famous. But did you know that this permafrost extends to the ocean floor? And it is thawing....

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Trade winds ventilate the tropical oceans: Explanation for increasing oxygen deficiency

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Long-term observations indicate that the oxygen minimum zones in the tropical oceans have expanded in recent decades. The reason is still unknown. Now scientists have found an explanation with the help of model simulations: A natural fluctuation of the trade winds....

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New species found in the deepest trench on Earth

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Researchers have returned from the first detailed study of the Mariana Trench aboard Schmidt Ocean Institute's research vessel Falkor. The expedition set many new records, including the deepest rock samples ever collected and the discovery of new fish species at the greatest depths ever recorded....

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New challenges for ocean acidification research

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To continue its striking development, ocean acidification research needs to bridge between its diverging branches towards an integrated assessment. Experts reflect on the lessons learned from ocean acidification research and highlight future challenges....

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The Greenland Ice Sheet: Now in HD

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The highest-resolution maps of the Greenland Ice Sheet are debuting. Starting with Worldview satellite imagery, The maps are already revealing previously unknown features on the ice sheet....

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Satellites measure increase of Sun’s energy absorbed in the Arctic

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NASA satellite instruments have observed a marked increase in solar radiation absorbed in the Arctic since the year 2000 -- a trend that aligns with the steady decrease in Arctic sea ice during the same period....

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Australia’s coastal observation network may aid in understanding of extreme ocean events

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A network of nine reference sites off the Australian coast is providing the latest physical, chemical, and biological information to help scientists better understand Australia's coastal seas....

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Ancient, hydrogen-rich waters deep underground around the world: Waters could support isolated life

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A team of scientists has mapped the location of hydrogen-rich waters found trapped kilometers beneath Earth's surface in rock fractures in Canada, South Africa and Scandinavia. Common in Precambrian Shield rocks -- the oldest rocks on Earth -- the ancient waters have a chemistry similar to that found near deep sea vents, suggesting these waters can support microbes living in isolation from the surface....

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North Atlantic signaled Ice Age thaw 1,000 years before it happened, reveals new research

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The Atlantic Ocean at mid-depths may have given out early warning signals – 1,000 years in advance - that the last Ice Age was going to end, scientists report....

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