News tagged with ocean
Mechanical motion rectifier leads to better energy harvesting
(Phys.org) -- Mechanical energy is all around us, whether in the form of a vehicle's vibrations, ocean waves, or vibrating train tracks. However, much of this energy is irregular and oscillatory - for example, road bumps ...
Apr 25, 2012 |
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Bacteria alive (more or less) in 86-million-year-old seabed clay
(Phys.org) -- A new study by scientists from Denmark and Germany has found live bacteria trapped in red clay deposited on the ocean floor some 86 million years ago. The bacteria use miniscule amounts of oxygen ...
May 18, 2012 |
4.5 / 5 (15) |
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Sumatra earthquake mysteries examined
(Phys.org) -- An earthquake in the Indian Ocean off the coast of Sumatra, Indonesia on 11th April was unusually powerful, at magnitude 8.6, for a “strike-slip” type of quake, and a new analysis of ...
Space & Earth / Earth Sciences
May 11, 2012 |
3.7 / 5 (3) |
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Scientists discover new kind of blue-green algae with carbonates in their cells
(Phys.org) -- Researchers studying organisms in Mexico's Lake Alchichica have discovered a new species of cyanobacterium that unlike any other ever found, has bony, intracellular carbonates. Up till now, specimens with such ...
Apr 30, 2012 |
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Great Unconformity: Evidence for a geologic trigger of the Cambrian explosion
(Phys.org) -- The oceans teemed with life 600 million years ago, but the simple, soft-bodied creatures would have been hardly recognizable as the ancestors of nearly all animals on Earth today.
Space & Earth / Earth Sciences
Apr 18, 2012 |
4.8 / 5 (19) |
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Bering Strait may be global temperature stabilizer
(Phys.org) -- A diverse group of climate researchers has found after running computer simulations that the strait that separates North America and Russia might be serving as a global temperature stabilizer. ...
Space & Earth / Earth Sciences
Apr 10, 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 |
4.3 / 5 (28) |
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Research group suggests Madagascar's unique animals arrived on rafts
(PhysOrg.com) -- Ever since the island of Madagascar was first visited by people, some two thousand years ago, there has been speculation about the unique plants and animals that live on the world’s ...
Mar 20, 2012 |
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Amasia: As next supercontinent forms, Arctic Ocean, Caribbean will vanish first
(PhysOrg.com) -- Geologists at Yale University have proposed a new theory to describe the formation of supercontinents, the epic process by which Earth’s major continental blocks combine into a single ...
Space & Earth / Earth Sciences
Feb 08, 2012 |
4.1 / 5 (14) |
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Astronomers solve mystery of vanishing energetic electrons in Earth's outer radiation belt
UCLA researchers have explained the puzzling disappearing act of energetic electrons in Earth's outer radiation belt, using data collected from a fleet of orbiting spacecraft.
Jan 29, 2012 |
4.5 / 5 (11) |
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A 'B12 shot' for marine algae? Scientists find key protein for algae growth in the ocean
Scientists have revealed a key cog in the biochemical machinery that allows marine algae at the base of the oceanic food chain to thrive. They have discovered a previously unknown protein in algae that grabs an essential ...
May 31, 2012 |
5 / 5 (2) |
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Electric Moon jolts the solar wind
(Phys.org) -- With the Moon as the most prominent object in the night sky and a major source of an invisible pull that creates ocean tides, many ancient cultures thought it could also affect our health or ...
Space & Earth / Space Exploration
May 30, 2012 |
4.7 / 5 (7) |
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Radioactive bluefin tuna crossed the Pacific to US
Across the vast Pacific, the mighty bluefin tuna carried radioactive contamination that leaked from Japan's crippled nuclear plant to the shores of the United States 6,000 miles away - the first time a huge ...
May 28, 2012 |
5 / 5 (4) |
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10 million years needed to recover from mass extinction
(Phys.org) -- It took some 10 million years for Earth to recover from the greatest mass extinction of all time, latest research has revealed.
Space & Earth / Earth Sciences
May 27, 2012 |
4.4 / 5 (8) |
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Robot monitors toxic red tides
A robotic device suspended under the ocean surface from a buoy off the New Hampshire coast is monitoring seawater for evidence of the red tide, clusters of microscopic plants that release toxins into fish ...
May 24, 2012 |
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Ocean
An ocean (from Greek Ωκεανός, Okeanos (Oceanus)) is a major body of saline water, and a principal component of the hydrosphere. Approximately 71% of the Earth's surface (an area of some 361 million square kilometers) is covered by ocean, a continuous body of water that is customarily divided into several principal oceans and smaller seas. More than half of this area is over 3,000 meters (9,800 ft) deep. Average oceanic salinity is around 35 parts per thousand (ppt) (3.5%), and nearly all seawater has a salinity in the range of 30 to 38 ppt.
For more information about Ocean, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
