Latest Seismology Stories

Princeton Model Shows Fallout Of Giant Meteorite Strike
2011-10-20 04:50:33

Seeking to better understand the level of death and destruction that would result from a large meteorite striking the Earth, Princeton University researchers have developed a new model that can not only more accurately simulate the seismic fallout of such an impact, but also help reveal new information about the surface and interior of planets based on past collisions. Princeton researchers created the first model to take into account Earth's elliptical shape, surface features and ocean...

Image 1 - Earthquakes Generate Big Heat In Super-small Areas
2011-10-14 07:18:02

Most earthquakes that are seen, heard, and felt around the world are caused by fast slip on faults. While the earthquake rupture itself can travel on a fault as fast as the speed of sound or better, the fault surfaces behind the rupture are sliding against each other at about a meter per second. But the mechanics that underlie fast slip during earthquakes have eluded scientists, because it´s difficult to replicate those conditions in the laboratory. “We still largely don´t...

2011-09-30 07:00:00

You can help Californians be the next survival story! Radio & TV Stations are Urged to Transmit a 1-Minute â˜Broadcast Drillâ at 10:20 a.m. on October 20, 2011 â“ Video & Audio Materials Now Available at http://www.ShakeOut.org â“ Registration Nears 8 Million â“ Only 3 weeks Left Until The Great California ShakeOut â“ Are You Prepared to â˜Count...

NASA-Funded Quake Forecast Gets High Scores
2011-10-01 07:18:01

While earthquakes can't yet be predicted, scientists are making advances in their ability to forecast where they are most likely to occur, with the best forecasts now about 10 times more accurate than a random prediction, according to a new study by scientists at the University of California, Davis. The researchers compared seven earthquake forecasts submitted to a competition organized by the Southern California Earthquake Center in 2005. Among the competitors was a NASA-funded forecast...

2011-09-29 18:15:00

How a wine rack shakes in an earthquake. Sacramento, CA (PRWEB) September 29, 2011 What happens when a large earthquake simulator meets a pricey wine collection? Find out in the first âœWill It Shakeâ installment from âœTotally Unpreparedâ, as hostess Susan Jekarl heads to the University of California, San Diego to show viewers what happens when the earth starts moving and bottles start flying. UCSD is home to the...

Engineers Simulate Large Quake On Curved Bridge
2011-09-23 09:11:59

  Full-size pickup trucks on bridge deck to add important data to be used for new design standards Six full-size pickup trucks took a wild ride on a 16-foot-high steel bridge when it shook violently in a series of never-before-conducted experiments to investigate the seismic behavior of a curved bridge with vehicles in place. The 145-foot-long, 162-ton steel and concrete bridge was built atop four large, 14-foot by 14-foot, hydraulic shake tables in the University of Nevada, Reno's...

Latest Seismology Reference Libraries

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...

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...

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
  • A blustering, bullying fellow; a pot-valiant braggart; a bully.
This word is named for Draw-Can-Sir, a character in George Villiers' 17th century play The Rehearsal.