News tagged with sediment record
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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2012: Magnetic pole reversal happens all the (geologic) time
Scientists understand that Earth's magnetic field has flipped its polarity many times over the millennia. In other words, if you were alive about 800,000 years ago, and facing what we call north with a magnetic ...
Space & Earth / Earth Sciences
Nov 30, 2011 |
4.7 / 5 (14) |
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Salt marsh sediments help gauge climate-change-induced sea level rise
A newly constructed, 2,000-year history of sea level elevations will help scientists refine the models used to predict climate-change-induced sea level rise, according to an international team of climate researchers. The ...
Space & Earth / Earth Sciences
Jun 20, 2011 |
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Did climate change cause Greenland's ancient Viking community to collapse?
Our changing climate usually appears to be a very modern problem, yet new research from Greenland published in Boreas, suggests that the AD 1350 collapse of a centuries old colony established by Viking settlers may have b ...
Space & Earth / Earth Sciences
Jun 20, 2011 |
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2,300-year climate record suggests severe tropical droughts as northern temperatures rise
A 2,300-year climate record University of Pittsburgh researchers recovered from an Andes Mountains lake reveals that as temperatures in the Northern Hemisphere rise, the planet's densely populated tropical ...
Space & Earth / Earth Sciences
May 11, 2011 |
4.9 / 5 (8) |
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California's Ancient Kelp Forest
(PhysOrg.com) -- The kelp forests off southern California are considered to be some of the most diverse and productive ecosystems on the planet, yet a new study indicates that today's kelp beds are less extensive and lush ...
Nov 10, 2009 |
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3.2-Million-Year Temperature History from Tiny Fossils
(PhysOrg.com) -- People often talk about greenhouse gases and their effect on the earth's climate as if those effects were new. But greenhouse gases have been around for hundreds of millennia, playing a key ...
Space & Earth / Earth Sciences
Aug 05, 2009 |
3.8 / 5 (12) |
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Scientists discover Amazon river is 11 million years old
Researchers at the University of Liverpool have discovered that the Amazon river, and its transcontinental drainage, is around 11 million years old and took its present shape about 2.4 million years ago.
Space & Earth / Earth Sciences
Jul 29, 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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Bias in the rock record?
(PhysOrg.com) -- The fossil record is known to be biased by the unevenness of geographical and stratigraphical sampling, and the lack of exposed rocks containing fossils. In a recent Perspective in Science [2 Jan ...
Space & Earth / Earth Sciences
Jan 14, 2009 |
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