Sediment
hideSediment 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.
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News tagged with sediment
A novel, 10,000-year study of strata compaction and sea-level rise on English coast
Space & Earth / Earth Sciences
Dec 10, 2009 |
4.5 / 5 (2) |
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Environmental scientists at the University of Pennsylvania and Durham University have employed a novel combination of geological and model reconstructions of wetland environments during a 10,000-year period ...
Study: Earth more sensitive to carbon dioxide than previously thought
Space & Earth / Earth Sciences
Dec 06, 2009 |
3.2 / 5 (37) |
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In the long term, the Earth's temperature may be 30-50% more sensitive to atmospheric carbon dioxide than has previously been estimated, reports a new study published in Nature Geoscience this week.
Sea Level Is Rising Along U.S. Atlantic Coast, According to New Data Analysis
Space & Earth / Earth Sciences
Dec 03, 2009 |
3.7 / 5 (13) |
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(PhysOrg.com) -- An international team of environmental scientists led by the University of Pennsylvania has shown that sea-level rise along the Atlantic Coast of the United States was 2 millimeters faster in the 20th century ...
Strong regional climatic fluctuations in the tropics
Space & Earth / Earth Sciences
Dec 02, 2009 |
4.7 / 5 (3) |
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Climatic fluctuations close to the equator show a different pattern to climate change in the Arctic and Antarctic. In the tropics distinct 11500 year fluctuations between wet and dry periods can be clearly identified which ...
A closer look at the Hudson Canyon shows why the canyon is critical for fish
Space & Earth / Earth Sciences
Dec 01, 2009 |
5 / 5 (1) |
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A series of newly discovered pits in the bottom of the Hudson Canyon, 100 miles southeast of New York Harbor, may be a key ingredient for the abundant and diverse marine ecosystem in and around the canyon, according to research ...
International expedition investigates climate change, alternative fuels in Arctic
Space & Earth / Earth Sciences
Nov 20, 2009 |
3 / 5 (1) |
1
Scientists from the Marine Biogeochemistry and Geology and Geophysics sections of the Naval Research Laboratory (NRL) organized and led a team of university and government scientists on an Arctic expedition ...
Unique Uranium Source in Naturally Bioreduced Sediment
Nov 18, 2009 |
4 / 5 (4) |
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(PhysOrg.com) -- A recently published Pacific Northwest National Laboratory study of a naturally bioreduced sediment sample from a former uranium mill tailings site reveals insights that enhance understanding ...
Scientists pinpoint origin of dissolved arsenic in Bangladesh drinking water
Nov 15, 2009 |
4.8 / 5 (21) |
1
Researchers in MIT's Department of Civil and Environmental Engineering believe they have pinpointed a pathway by which arsenic may be contaminating the drinking water in Bangladesh, a phenomenon that has puzzled ...
California's Ancient Kelp Forest
Nov 10, 2009 |
4.6 / 5 (5) |
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(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 ...
Past climate of the northern Antarctic Peninsular informs global warming debate
Space & Earth / Earth Sciences
Nov 06, 2009 |
2.8 / 5 (9) |
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The seriousness of current global warming is underlined by a reconstruction of climate at Maxwell Bay in the South Shetland Islands of the Antarctic Peninsula over approximately the last 14,000 years, which ...
Geologists studying groundwater arsenic levels in India empower Bengali women, children
Oct 22, 2009 |
1 / 5 (1) |
1
A Kansas State University geologist and graduate student are finding that the most important tools in their fieldwork on groundwater arsenic pollution are women and children armed with pamphlets and testing kits.
Glacial melting may release pollutants in the environment
Oct 21, 2009 |
2.2 / 5 (5) |
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Those pristine-looking Alpine glaciers now melting as global warming sets in may explain the mysterious increase in persistent organic pollutants in sediment from certain lakes since the 1990s, despite decreased ...
Diverting Sediment-rich Water Below New Orleans Could Lead to Extensive New Land
Oct 20, 2009 |
4.5 / 5 (2) |
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(PhysOrg.com) -- Diverting sediment-rich water from the Mississippi River below New Orleans could generate new land in the river's delta in the next century.
Arctic lake sediments show warming, unique ecological changes in recent decades
Space & Earth / Earth Sciences
Oct 19, 2009 |
4 / 5 (9) |
2
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 ...
Deep-Sea Microbes May Answer Long-Standing Question About Earth's Nitrogen Cycle
Space & Earth / Earth Sciences
Oct 15, 2009 |
4.6 / 5 (9) |
1
(PhysOrg.com) -- Scientists have identified an unexpected metabolic ability in a symbiotic community of deep-sea microorganisms. It may help solve a lingering mystery about the world's nitrogen cycle.
