News tagged with sediment
Scientists discover first multicellular life that doesn't need oxygen
(PhysOrg.com) -- Oxygen may not be the staple of modern complex life that scientists once thought. Until now, the only life forms known to live exclusively in anoxic conditions were viruses, bacteria and Archaea. ...
Apr 07, 2010 |
4.7 / 5 (73) |
15
|
Global warming: Our best guess is likely wrong
No one knows exactly how much Earth's climate will warm due to carbon emissions, but a new study this week suggests scientists' best predictions about global warming might be incorrect.
Space & Earth / Earth Sciences
Jul 14, 2009 |
4.6 / 5 (49) |
54
Study: Earth more sensitive to carbon dioxide than previously thought
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.
Space & Earth / Earth Sciences
Dec 06, 2009 |
3.1 / 5 (53) |
91
Geologist discovers pattern in Earth's long-term climate record
In an analysis of the past 1.2 million years, UC Santa Barbara geologist Lorraine Lisiecki discovered a pattern that connects the regular changes of the Earth's orbital cycle to changes in the Earth's climate. ...
Space & Earth / Earth Sciences
Apr 06, 2010 |
4.6 / 5 (30) |
24
|
Global warming likely to be amplified by slow changes to Earth systems
Researchers studying a period of high carbon dioxide levels and warm climate several million years ago have concluded that slow changes such as melting ice sheets amplified the initial warming caused by greenhouse ...
Space & Earth / Earth Sciences
Dec 20, 2009 |
2.8 / 5 (49) |
59
Geologist investigates canyon carved in just three days in Texas flood
In the summer of 2002, a week of heavy rains in Central Texas caused Canyon Lake -- the reservoir of the Canyon Dam -- to flood over its spillway and down the Guadalupe River Valley in a planned diversion ...
Space & Earth / Earth Sciences
Jun 20, 2010 |
4.9 / 5 (28) |
111
|
Discovery of a complex, multicellular life from over two billion years ago
The discovery in Gabon of more than 250 fossils in an excellent state of conservation has provided proof, for the first time, of the existence of multicellular organisms 2.1 billion years ago. This finding ...
Space & Earth / Earth Sciences
Jun 30, 2010 |
5 / 5 (27) |
10
|
Self-assembling solar panels a step closer
(PhysOrg.com) -- Scientists Robert J. Knuesel and Heiko O. Jacobs of the University of Minnesota have developed a way to make tiny solar cells self-assemble.
Jan 14, 2010 |
4.7 / 5 (26) |
2
|
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 |
4.3 / 5 (28) |
47
|
Scientists detect huge carbon 'burp' that helped end last ice age
(PhysOrg.com) -- Scientists have found the possible source of a huge carbon dioxide 'burp' that happened some 18,000 years ago and which helped to end the last ice age.
Space & Earth / Earth Sciences
May 27, 2010 |
3.7 / 5 (31) |
18
|
Marine Scientist Finds 'Little Ice Age' Had Dramatic Effect on Gulf
(PhysOrg.com) -- More than 350 years ago, the temperatures in northern Europe dropped dramatically in an event known as the “Little Ice Age.” Now - deep below the waters of the Gulf of Mexico and buried in ...
Space & Earth / Earth Sciences
Feb 22, 2010 |
4.7 / 5 (23) |
25
|
Methane may be answer to 56-million-year question
(PhysOrg.com) -- The release of massive amounts of carbon from methane hydrate frozen under the seafloor 56 million years ago has been linked to the greatest change in global climate since a dinosaur-killing ...
Space & Earth / Earth Sciences
Nov 09, 2011 |
4.9 / 5 (21) |
18
|
Scientists pinpoint origin of dissolved arsenic in Bangladesh drinking water
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 ...
Nov 15, 2009 |
4.6 / 5 (22) |
1
Dramatic ocean circulation changes revealed
The unusually cold weather this winter has been caused by a change in the winds. Instead of the typical westerly winds warmed by Atlantic surface ocean currents, cold northerly Arctic winds are influencing ...
Space & Earth / Earth Sciences
Jan 14, 2011 |
4.4 / 5 (22) |
13
|
Scientists probe Earth's core
We know more about distant galaxies than we do about the interior of our own planet. However, by observing distant earthquakes, researchers at the University of Calgary have revealed new clues about the top ...
Space & Earth / Earth Sciences
Apr 28, 2010 |
4.4 / 5 (20) |
4
|
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.
