News tagged with earthquake waves
Earthquake waves: How do they spread?
Space & Earth / Earth Sciences
Apr 13, 2009 |
3.7 / 5 (3) |
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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 ...
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Taiwan scientist develops earthquake alarm
Space & Earth / Earth Sciences
Sep 16, 2009 |
4 / 5 (1) |
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A Taiwanese scientist has developed an earthquake alarm that could give people a crucial 15-second warning in case of a tremor, one of his team said Wednesday.
Earthquake 'memory' could spur aftershocks
Jan 03, 2008 |
4.8 / 5 (6) |
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Using a novel device that simulates earthquakes in a laboratory setting, a Los Alamos researcher and his colleagues have shown that seismic waves—the sounds radiated from earthquakes—can induce earthquake aftershocks, often ...
New way to monitor faults may help predict earthquakes
Space & Earth / Earth Sciences
Oct 01, 2009 |
5 / 5 (1) |
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Scientists at the Carnegie Institution have found a way to monitor the strength of geologic faults deep in the Earth. This finding could prove to be a boon for earthquake prediction by pinpointing those faults that are likely ...
Great Indian Ocean earthquake of 2004 set off tremors in San Andreas fault
Space & Earth / Earth Sciences
Dec 10, 2008 |
4.5 / 5 (6) |
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In the last few years there has been a growing number of documented cases in which large earthquakes set off unfelt tremors in earthquake faults hundreds, sometimes even thousands, of miles away.
USGS monitoring Twitter for earthquake details
Dec 15, 2009 |
3 / 5 (1) |
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(AP) -- OMG! Earthquake!
Predicted ground motions for great earthquake in Pacific Northwest: Seattle, Victoria and Vancouver
Space & Earth / Earth Sciences
Jun 11, 2009 |
3.8 / 5 (5) |
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A new study evaluates expected ground motion in Seattle, Victoria and Vancouver from earthquakes of magnitude 7.5 - 9.0, providing engineers and policymakers with a new tool to build or retrofit structures to withstand seismic ...
Mine Collapse Was the Quake, not Vice Versa
Space & Earth / Earth Sciences
Aug 06, 2007 |
2 / 5 (1) |
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Ambiguous, preliminary evidence indicates that a coal mine cave-in that trapped six miners early Monday in Utah generated seismic waves that were recorded as a magnitude-3.9 earthquake, according to the University of Utah ...
Why do earthquakes stop?
Space & Earth / Earth Sciences
Feb 06, 2008 |
3.7 / 5 (7) |
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The underlying structure of a fault determines whether an earthquake rupture will jump from one fault to another, magnifying its size and potential devastation. Understanding why some earthquakes terminate along a fault, ...
CSI: Pisco, Peru -- Study uncovers tectonic events behind earthquake
Space & Earth / Earth Sciences
Apr 10, 2009 |
5 / 5 (2) |
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A magnitude 8.0. earthquake destroyed 90 percent of the city of Pisco, Peru on August 16, 2007. The event killed 595 people, while another 318 were missing. Tsunami waves were observed locally, off the shore ...
Study reveals seismic shift in methods used to track earthquakes
Space & Earth / Earth Sciences
Sep 02, 2009 |
4 / 5 (2) |
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The team, led by scientists from the University of Edinburgh, says that the new method, which uses data collected from earthquakes, potentially allows the Earth's seismic activity to be mapped more comprehensively.
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