News tagged with lake sediments
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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Mud manifests history of clear water in murky Minnesota duck depot Lake Christina
During peak migration days in the early 1900s, tens of thousands of canvasback ducks could be seen floating and diving on Minnesota's Lake Christina. Since midcentury, changes to the lake have diminished this grand, iconic ...
Mar 27, 2012 |
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Controlling forest fires
Simon Fraser University statistician Rick Routledge will share his knowledge of what layers of charcoal in lake-bottom sediment can tell us about an area's forest fire history, at the world's largest science fair in Vancouver.
Feb 17, 2012 |
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New record from stalagmites shows climate history in Central Asia
The climate in Central Asia, currently a semiarid region, has varied over the past 500,000 years. An accurate record of the past climate can help scientists understand current climate and better predict how the climate may ...
Space & Earth / Earth Sciences
Jan 31, 2012 |
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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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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 |
3 / 5 (7) |
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Man-made global warming started with ancient hunters: study
Even before the dawn of agriculture, people may have caused the planet to warm up, a new study suggests.
Space & Earth / Earth Sciences
Jun 30, 2010 |
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Earth from Space: A smoke-free Iceland
(PhysOrg.com) -- This Envisat image features a smoke-free Iceland. Although the island has received a lot of attention in the past months for its volcanic activity, it is also home to numerous glaciers, lakes, ...
Space & Earth / Earth Sciences
Jun 04, 2010 |
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Study finds rising levels of dioxins from common soap ingredient in Mississippi River
Specific dioxins derived from the antibacterial agent triclosan, used in many hand soaps, deodorants, dishwashing liquids and other consumer products, account for an increasing proportion of total dioxins ...
May 18, 2010 |
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