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Latest Seismology Stories

2011-11-28 23:06:21

New Zealand: After 8,000 aftershocks, when will it stop? "You know you are from Christchurch when“¦" you manage to keep your sense of humor through a year of nonstop hardship. This phrase, coined by Christchurch native Bruce Raines, exploded on Facebook and takes on a multitude of equally morose and light-hearted endings. These phrases accurately capture the spirit of the local inhabitants after a series of earthquakes and aftershocks rocked the city, dramatically changing...

Earthquakes Have Largest Impact On Health Than Other Natural Disasters
2011-11-04 11:38:33

Researchers say that earthquakes have a bigger impact on health than other natural disasters like floods and hurricanes. The researchers said earthquakes have caused over 780,000 deaths in the past decade.  They also said that for every person killed in an earthquake, three others are injured. There are over a million earthquakes around the world each year, and many of the world's major cities are on fault lines. The team said that depression can be the most common problem after...

2011-11-01 21:16:50

Special issue of Seismological Research Letters Details of an earthquake that rocked the largest city in the South Island of New Zealand in February 2011 may transform the way scientists assess the potential threat of fault lines that run through urban centers. According to a series of new papers published today in Seismological Research Letters (SRL), scientists were surprised at the impact of the earthquake, which registered a relatively moderate magnitude 6.2. The in-depth review of...

7.2-Magnitude Earthquake Strikes Turkey
2011-10-24 10:33:24

A 7.2-magnitude earthquake in Turkey has left buildings crumbled and a death toll of over 270 and counting. The earthquake struck a town of around 75,000 people on Sunday morning, even collapsing an 80-story building. The provincial capital Van also was struck severely by the quake, causing most of the mud brick homes to be destroyed. "Because the buildings are made of mud brick, they are more vulnerable to quakes. I must say that almost all buildings in such villages are destroyed,"...

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...


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...

0_5badd37024d78e3386e67ababbfe35a0
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
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
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