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Latest Seismology Stories

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2010-12-17 08:05:14

New technologies developed by NASA and other agencies are revealing surprising insights into a major earthquake that rocked parts of the American Southwest and Mexico in April, including increased potential for more large earthquakes in Southern California. At the fall meeting of the American Geophysical Union in San Francisco, scientists from NASA and other agencies presented the latest research on the magnitude 7.2 El Mayor-Cucapah earthquake, that region's largest in nearly 120 years....

2010-12-16 14:39:29

Geologists from the University of Rhode Island and Princeton University, in collaboration with Lawrence Livermore National Laboratory, have taken an important step toward helping the United States government monitor nuclear explosions by improving a 3-dimensional model originally developed at Harvard University. The improvements make the model more accurate at detecting the location, source and depth of seismic activity. The results of their research were presented today at a meeting of the...

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2010-12-10 13:41:18

As the U.S. policy makers renew emphasis on the use of nuclear energy in their efforts to reduce the country's oil dependence, other factors come into play. One concern of paramount importance is the seismic hazard at the site where nuclear reactors are located. Russell A. Green, associate professor of civil and environmental engineering at Virginia Tech, spent five years as an earthquake engineer for the U.S. Defense Nuclear Facilities Safety Board in Washington, D.C., prior to becoming a...

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2010-12-02 10:38:27

Researchers from the Universidad Pablo de Olavide (UPO) and the Universidad de Sevilla (US) have found patterns of behavior that occur before an earthquake on the Iberian peninsula. The team used clustering techniques to forecast medium-large seismic movements when certain circumstances coincide. "Using mathematical techniques, we have found patterns when medium-large earthquakes happen, that is, earthquakes greater than 4.4 on the Richter scale," Francisco Martínez...

2010-11-07 10:50:49

Focus of special issue by world's premier seismology journal The devastating 2008 Wenchuan earthquake marks a defining moment for China's earthquake science program. The focus of a special November issue of the prestigious Bulletin of the Seismological Society of America (BSSA), the M 7.9 earthquake has garnered intense interest among seismologists, allowing the Chinese science community to demonstrate its capability to a global audience. The earthquake produced an enormous disaster, killing...

2010-11-02 07:49:00

HOUSTON, Nov. 2, 2010 /PRNewswire/ -- Hyperdynamics Corporation (NYSE Amex: HDY) today announced the completion of the second portion of its 3D seismic survey in the Company's offshore concession in the Republic of Guinea. This portion of the offshore survey covers 875 square kilometers of a total planned 2010 survey of 3,635 square kilometers. Ray Leonard, the President and CEO of Hyperdynamics, stated, "We are very pleased that the seismic acquisition in the second survey area finished...

2010-10-29 11:39:00

WASHINGTON, Oct. 29 /PRNewswire-USNewswire/ -- Many of 1.3 million Haitians living in crowded displacement camps could be back in safe homes within 12 months to 24 months, says earthquake structural engineer and post-disaster expert Dr. Kit Miyamoto. (Logo: http://photos.prnewswire.com/prnh/20100211/DC53912LOGO) (Logo: http://www.newscom.com/cgi-bin/prnh/20100211/DC53912LOGO) Working with the Pan American Development Foundation, in cooperation with the Haitian Ministry of Public Works...

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2010-10-25 06:15:00

The deadly Haiti earthquake that killed upwards of 300,000 people in January may have been caused by a previously unknown fault and pressure could be building for another seismic catastrophe, Reuters reported on Sunday. Two reports were published in the journal Nature Geoscience that follow different paths but ultimately conclude the fault that was originally blamed for the earthquake was not the real source, and it is still a real threat. "As the Enriquillo-Plantain Garden fault did not...

2010-10-22 09:21:00

ARMONK, N.Y., Oct. 22 /PRNewswire/ -- IBM (NYSE: IBM) inventors have developed a patented natural disaster warning system, which uses analytics to improve the effectiveness and timeliness of post-event rescue efforts in cities and other locations where efficient emergency response is essential following a natural disaster. It also offers a means to accurately predict the location and timing of subsequent catastrophic events, which will further aid evacuation efforts. (Logo:...

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2010-10-20 11:20:00

Civil engineers studying the effects of Haiti's devastating earthquake have concluded that a relatively simple system could be used by officials to quickly decide how to modify existing buildings and construct new ones that would better withstand future quakes. The system, which uses a priority index to rank reinforced concrete buildings according to their seismic vulnerability, originally was developed in Japan and later adapted for use in Turkey by researchers at Purdue University. A recent...


Latest Seismology Reference Libraries

Seismology
2014-01-12 00:00:00

Seismology is the scientific study of earthquakes and the spread of elastic waves through the Earth or through other planet-like bodies. The field includes studies of earthquake effects, such as tsunamis in addition to diverse seismic sources such as tectonic, volcanic, oceanic, atmospheric, and artificial processes. A related field that utilizes geology to infer information regarding past earthquakes is paleoseismology. A recording of earth motion as a function of time is a seismogram. A...

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2010-11-15 18:30:29

The Richter scale assigns a single number to quantify the amount of seismic energy released by an earthquake. The scale uses a base-10 logarithm by calculating the logarithm of the combined horizontal amplitude of the largest displacement from zero on a particular type of seismometer. A earthquake measuring 5.0 on the Richter scale has a shaking amplitude 10 times larger than one that measures 4.0. The moment magnitude, calibrated to give generally similar value for medium-sized...

0_2d32b95d634235dd48b1f1b3e5949a2e
2010-10-07 16:05:32

The Seismometer is an instrument designed to measure the motions of the ground. This includes seismic waves generated by earthquakes, nuclear explosions, and other seismic sources. Records of these activities allow seismologists to map the interior of the Earth, and locate and measure the size of the different sources. There are also seismographs, which is sometimes used in place of the word seismometer. However, a seismograph is the older instrument in which the measuring and recording...

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Word of the Day
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'