News tagged with earthquake waves
A New Cloaking Method: This is not a 'Star Trek' or 'Harry Potter' Story (w/ Video)
(PhysOrg.com) -- University of Utah mathematicians developed a new cloaking method, and it's unlikely to lead to invisibility cloaks like those used by Harry Potter or Romulan spaceships in "Star Trek." Instead, ...
Aug 17, 2009 |
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Pacific tsunami threat greater than expected
The potential for a huge Pacific Ocean tsunami on the West Coast of America may be greater than previously thought, according to a new study of geological evidence along the Gulf of Alaska coast.
Space & Earth / Earth Sciences
Jul 20, 2009 |
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Contrary to recent hypothesis, 'chevrons' are not evidence of megatsunamis
A persistent school of thought in recent years has held that so-called "chevrons," large U- or V-shaped formations found in some of the world's coastal areas, are evidence of megatsunamis caused by asteroids ...
Space & Earth / Earth Sciences
Apr 29, 2009 |
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Fingerprinting slow earthquakes (w/Podcast)
(PhysOrg.com) -- The most powerful earthquakes happen at the junction of two converging tectonic plates, where one plate is sliding (or subducting) beneath the other. Now a team of researchers, led by Teh-Ru ...
Space & Earth / Earth Sciences
Apr 23, 2009 |
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Earthquake waves: How do they spread?
Propagation of earthquake waves within the Earth is not uniform. Experiments indicate that the velocity of shear waves (s-waves) in Earth’s lower mantle between 660 and 2900 km depth is strongly dependent on the orientation ...
Space & Earth / Earth Sciences
Apr 13, 2009 |
3.7 / 5 (3) |
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'Fossil earthquakes' abundant
Rocks formed only under the extreme heat and friction during earthquakes, called pseudotachylytes, may be more abundant than previously reported, according to new research focused on eight faults found in the Sierra Nevada. ...
Space & Earth / Earth Sciences
Jan 28, 2009 |
3 / 5 (3) |
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Research team finds undersea earthquake ‘mountains'
Undersea mountains several thousand meters high have been discovered subducted under a tectonic plate that constitutes the sea bottom off the Boso Peninsula in the southeastern part of the Kanto region, according to a survey ...
Space & Earth / Earth Sciences
Dec 30, 2008 |
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