News tagged with lake sediment
The first evidence of pre-industrial mercury pollution in the Andes
The study of ancient lake sediment from high altitude lakes in the Andes has revealed for the first time that mercury pollution occurred long before the start of the Industrial Revolution.
May 18, 2009 |
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Geologists map prehistoric climate changes in Canada's Yukon Territory
Researchers at the University of Pittsburgh have joined an international group of scientists to study past climate changes in the Arctic. Comprising geologists from Pitt's Department of Geology and Planetary Science, the ...
Space & Earth / Earth Sciences
May 08, 2012 |
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Fast-shrinking Greenland glacier experienced rapid growth during cooler times
Large, marine-calving glaciers have the ability not only to shrink rapidly in response to global warming, but to grow at a remarkable pace during periods of global cooling, according to University at Buffalo geologists working ...
Space & Earth / Earth Sciences
Jul 14, 2011 |
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Rapid changes in Greenland climate last 5,000 years, study finds
(PhysOrg.com) -- Abrupt average temperature changes of as much as 4 or 5 degrees Celsius over a few decades may have profoundly affected human civilization for cultures that occupied western Greenland over ...
Space & Earth / Earth Sciences
Jun 01, 2011 |
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Ecological impact on Canada's Arctic coastline linked to global climate change
Scientists from Queen's and Carleton universities head a national multidisciplinary research team that has uncovered startling new evidence of the destructive impact of global climate change on North America's ...
May 16, 2011 |
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Ancient catastrophic drought leads to question: How severe can climate change become?
How severe can climate change become in a warming world? Worse than anything we've seen in written history, according to results of a study appearing this week in the journal Science.
Space & Earth / Earth Sciences
Feb 24, 2011 |
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Ancient raindrops reveal a wave of mountains sent south by sinking Farallon plate
(PhysOrg.com) -- Analyzing the isotope ratios of ancient raindrops preserved in soils and lake sediments, Stanford researchers have shown that a wave of mountain building began in British Columbia, Canada ...
Space & Earth / Earth Sciences
Dec 17, 2010 |
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Earth's fiery past and future modeled by NASA
Wildfires may seem like a fixed and unchanging force of nature. They're not. Over long time scales, research has shown that both the climate and humans have a profound effect on wildfire activity around the ...
Oct 28, 2010 |
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Warmer climate entails increased release of carbon dioxide by inland lakes
Much organically bound carbon is deposited on inland lake bottoms. A portion remains in the sediment, sometimes for thousands of years, while the rest is largely broken down to carbon dioxide and methane, which are released ...
Space & Earth / Earth Sciences
Jul 21, 2010 |
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Arctic lake sediments show warming, unique ecological changes in recent decades
An analysis of sediment cores indicates that biological and chemical changes occurring at a remote Arctic lake are unprecedented over the past 200,000 years and likely are the result of human-caused climate ...
Space & Earth / Earth Sciences
Oct 19, 2009 |
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Annual Tahoe Report Says Asian Clam Invasion Is Growing Fast
(PhysOrg.com) -- Released today, UC Davis' annual Lake Tahoe health report describes a spreading Asian clam population that could put sharp shells and rotting algae on the spectacular mountain lake's popular ...
Aug 18, 2009 |
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Professor hatches century-old eggs to study evolution
(PhysOrg.com) -- Suspending a life in time is a theme that normally finds itself in the pages of science fiction, but now such ideas have become a reality in the annals of science.
Jul 17, 2009 |
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Scientists Return from Expedition to Drill Beneath Frozen Russian Lake
(PhysOrg.com) -- A team of scientists from the United States, Germany, Russia and Austria has just returned from a six-month drilling expedition to a frozen lake in Siberia: Lake El'gygytgyn, "Lake E" for ...
Space & Earth / Earth Sciences
May 28, 2009 |
4.7 / 5 (7) |
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Scientist uses sedimentary record to uncover planet's past
(PhysOrg.com) -- The wind barreled across the ice at Daily Lake as Montana State University paleoecologist Cathy Whitlock and three students used all their strength to pull a metal pipe out of the mucky lake ...
Space & Earth / Earth Sciences
Feb 27, 2009 |
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Engineering team heads to Antarctica to explore hidden lake
Next week a British engineering team heads off to Antarctica for the first stage of an ambitious scientific mission to collect water and sediment samples from a lake buried beneath three kilometres of solid ice. This extraordinary ...
Space & Earth / Earth Sciences
Oct 10, 2011 |
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