News tagged with sediment
Farm ponds cut agricultural water pollution
The reintroduction of farm ponds could significantly reduce agricultural pollution in our streams and rivers, according to new research.
Jun 01, 2012 |
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Rapid coral death by a deadly chain reaction
(Phys.org) -- Most people are fascinated by the colorful and exotic coral reefs, which form habitats with probably the largest biodiversity. But human civilisation is the top danger to these fragile ecosystems ...
May 24, 2012 |
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Tracking nutrient pollutant in Chesapeake
Too much of a good thing can kill you, the saying goes.
May 10, 2012 |
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Researchers map fish species at risk from dams
Dams are believed to be one of the biggest threats to freshwater organisms worldwide: They disrupt normal patterns of water and sediment flow, impede migration, and alter the character of spawning and feeding grounds. A shortage ...
May 10, 2012 |
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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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Scientists core into California's Clear Lake to explore past climate change
(Phys.org) -- University of California, Berkeley, scientists are drilling into ancient sediments at the bottom of Northern California's Clear Lake for clues that could help them better predict how today's ...
Space & Earth / Earth Sciences
May 03, 2012 |
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Arabic records allow past climate to be reconstructed
Corals, trees and marine sediments, among others, are direct evidence of the climate of the past, but they are not the only indicators. A team led by Spanish scientists has interpreted records written in Iraq ...
Space & Earth / Earth Sciences
Apr 30, 2012 |
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New harvesting approach boosts energy output from bacteria
A team of scientists from University of Colorado Denver has developed a novel energy system that increases the amount of energy harvested from microbial fuel cells (MFCs) by more than 70 times. The new approach also greatly ...
Technology / Energy & Green Tech
Apr 25, 2012 |
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Environmental index could save rural communities
A new approach to environmental monitoring could avert ruin for some of the world's poorest communities.
Apr 23, 2012 |
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Warning signs from ancient Greek tsunami
In the winter of 479 B.C., a tsunami was the savior of Potidaea, drowning hundreds of Persian invaders as they lay siege to the ancient Greek village. New geological evidence suggests that the region may still ...
Space & Earth / Earth Sciences
Apr 19, 2012 |
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Hot new manufacturing tool: A temperature-controlled microbe
Many manufacturing processes rely on microorganisms to perform tricky chemical transformations or make substances from simple starting materials. The authors of a study appearing in mBio, the online open-access journal of the ...
Apr 17, 2012 |
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Thawing permafrost 50 million years ago led to extreme global warming events
In a new study reported in Nature, climate scientist Rob DeConto of the University of Massachusetts Amherst and colleagues elsewhere propose a simple new mechanism to explain the source of carbon that fed a ...
Space & Earth / Earth Sciences
Apr 04, 2012 |
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Team releases findings from 2011 cruise to measure the concentration, distribution, and impacts of Fukushima radiation
(PhysOrg.com) -- An international research team is reporting the results of a research cruise they organized to study the amount, spread, and impacts of radiation released into the ocean from the tsunami-crippled ...
Apr 02, 2012 |
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Fossil raindrop impressions imply greenhouse gases loaded early Earth's atmosphere
In ancient Earth history, the sun burned as much as 30 percent dimmer than it does now. Theoretically that should have encased the planet in ice, but there is geologic evidence for rivers and ocean sediments ...
Space & Earth / Earth Sciences
Mar 28, 2012 |
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Oceanographers develop method for measuring the pace of life
(PhysOrg.com) -- Life deep in the seabed proceeds very slowly. But the slow-growing bacteria living many meters beneath the seafloor play an important role in the global storage of organic carbon and have a long-term effect ...
Space & Earth / Earth Sciences
Mar 28, 2012 |
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Sediment
Sediment is any particulate matter that can be transported by fluid flow, and which eventually is deposited.
Sediments are most often transported by water (fluvial processes) transported by wind (aeolian processes) and glaciers. Beach sands and river channel deposits are examples of fluvial transport and deposition, though sediment also often settles out of slow-moving or standing water in lakes and oceans. Desert sand dunes and loess are examples of aeolian transport and deposition. Glacial moraine deposits and till are ice transported sediments.
For more information about Sediment, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
