Lake
hideA lake (from Latin lacus) is a terrain feature (or physical feature), a body of liquid on the surface of a world that is localized to the bottom of basin (another type of landform or terrain feature; that is, it is not global) and moves slowly if it moves at all. On Earth, a body of water is considered a lake when it is inland, not part of the ocean, is larger and deeper than a pond, and is fed by a river. The only world other than Earth known to harbor lakes is Titan, Saturn's largest moon, which has lakes of ethane, most likely mixed with methane. It is not known if Titan's lakes are fed by rivers, though Titan's surface is carved by numerous river beds.
Natural lakes on Earth are generally found in mountainous areas, rift zones, and areas with ongoing or recent glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers. In some parts of the world, there are many lakes because of chaotic drainage patterns left over from the last Ice Age. All lakes are temporary over geologic time scales, as they will slowly fill in with sediments or spill out of the basin containing them.
For more information about Lake, read the full article at
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News tagged with lake
'Super-river' formed the English Channel
Space & Earth / Earth Sciences
Dec 02, 2009 |
4.4 / 5 (14) |
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(PhysOrg.com) -- A team of Anglo-French scientists studying sedimentary deposits in the Bay of Biscay have concluded that Britain and France were separated by a "super-river" during three periods of glaciations, ...
Researchers look at water-energy impacts of climate change
Dec 01, 2009 |
4 / 5 (4) |
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(PhysOrg.com) -- Climate projections for the next 50 to 100 years forecast increasingly frequent severe droughts and heat waves across the American Southwest, sinking available water levels even as rising mercury drives up ...
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Fears mount over giant carp reaching Great Lakes
16 hours ago |
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(AP) -- Fears that giant, voracious species of carp will get into the Great Lakes and wipe out other fish have led to rising demands that the government close the waterway connecting the lakes to the Mississippi ...
Strong regional climatic fluctuations in the tropics
Space & Earth / Earth Sciences
20 hours ago |
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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 ...
Illinois to poison canal in hopes of killing invasive carp
Dec 02, 2009 |
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The largest fish kill in Illinois history -- expected to net 100 tons of fish including, hopefully, some Asian carp -- is to start Wednesday south of Chicago in an attempt to make sure none of the feared carp make it past ...
Study Examines Racial 'Blind Spots' in Chicago Area Communities
Other Sciences / Social Sciences
Nov 30, 2009 |
3 / 5 (2) |
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(PhysOrg.com) -- Racial residential segregation in the Chicago area may be perpetuated by a lack of knowledge of communities across racial lines, according to a new study led by a University of Illinois at Chicago researcher.
Big freeze plunged Europe into ice age in months
Space & Earth / Earth Sciences
Nov 30, 2009 |
4 / 5 (17) |
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In the film, 'The Day After Tomorrow' the world enters the icy grip of a new glacial period within the space of just a few weeks. Now new research shows that this scenario may not be so far from the truth after all.
Spinons -- confined like quarks
Nov 29, 2009 |
4.5 / 5 (15) |
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The concept of confinement is one of the central ideas in modern physics. The most famous example is that of quarks which bind together to form protons and neutrons. Now Prof. Bella Lake from Helmholtz-Zentrum Berlin (Germany) ...
Scientists explain puzzling lake asymmetry on Titan
Space & Earth / Space Exploration
Nov 29, 2009 |
4.4 / 5 (14) |
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Researchers at the California Institute of Technology (Caltech) suggest that the eccentricity of Saturn's orbit around the sun may be responsible for the unusually uneven distribution of methane and ethane ...
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