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Latest Seismology Stories

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2011-02-23 07:15:00

The official death toll resulting from Tuesday's a 6.3 magnitude earthquake in the New Zealand city of Christchurch has climbed to 75, but that number is expected to rise even more--especially now that police called off the search for survivors at a television office building, the Daily Mail reported Wednesday morning. The website of the British newspaper said that between 80 and 100 or more people are believed to have been in the Canterbury TV building, which was badly damaged by the tremors...

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2011-02-21 09:30:00

New research gives the first accurate estimate of how much faster the Earth's core is rotating compared to the rest of the planet. Previous research had shown that the Earth's core rotates faster than the rest of the planet. However, scientists from the University of Cambridge have discovered that earlier estimates of 1 degree every year were inaccurate and that the core is actually moving much slower than previously believed "“ approximately 1 degree every million years. Their findings...

2011-02-15 15:15:00

HOUSTON, Feb. 15, 2011 /PRNewswire/ -- ION Geophysical Corporation (NYSE: IO) today announced that its GX Technology (GXT) Imaging Solutions group has established a new seismic data processing center in Rio de Janeiro. A joint venture of GXT and Brazilian energy consultancy Bratexco, GX Technology Processamento de Dados Ltda. will provide advanced imaging services to E&P companies operating in the highly prospective basins off the coasts of Brazil and environs, combining the...

2011-02-15 00:02:50

ISAT introduces free new construction forum that connects construction professionals worldwide. La Mirada, California (PRWEB) February 14, 2011 International Seismic Application Technology (ISAT), the industry leader in seismic bracing and code compliance for non-structural building utilities, is pleased to announce they are now offering a free online information exchange forum open to construction professionals worldwide to discuss issues related to construction. ISAT's new forum allows...

2011-02-10 16:55:11

Lake status doesn't affect earthquake timing, but a big quake for Los Angeles Basin remains on the table A chronology of 1,000 years of earthquakes at the southern end of the San Andreas Fault nixes the idea that lake changes in the now-dry region caused past quakes. However, researchers say, the timeline pulled from sediment in three deep trenches confirms that this portion of the fault is long past the expected time for a major temblor that would strongly shake the Los Angeles Basin. The...

2011-02-08 23:23:55

2000 years of Chinese records shows migrating mid-continent earthquakes This December marks the bicentennial of the New Madrid earthquakes of 1811-12, which are the biggest earthquakes known to have occurred in the central U.S. Now, based on the earthquake record in China, a University of Missouri researcher says that mid-continent earthquakes tend to move among fault systems, so the next big earthquake in the central U.S. may actually occur someplace else other than along the New Madrid...

2011-02-02 00:00:42

SeiSpec launches a web site to help track the development and testing of their recently patented seismic acquisition technology. Important in the production and discovery of oil and gas, the SeiSpec process improves underground imaging through improvement of the signal to noise ratio. Georgetown, TX (PRWEB) February 1, 2011 SeiSpec, LLC., a Texas firm organized to further the development of a new approach to seismic acquisition, has opened a website at http://www.seispec.com. The...

30b2bc6a35657153424919acf8b282501
2011-01-31 09:05:00

The region of Chile that was rocked by an earthquake last February could be at risk for a larger series of tremors, according to a new study published online by the journal Nature Geoscience on Sunday. The 2010 earthquake, which hit the Maule region of the South American country on February 27, "was not unexpected," according to researchers from Italy's National Institute of Geophysics and Vulcanology. "A clearly identified seismic gap existed in an area where tectonic loading has been...

2011-01-19 14:14:39

One year ago, a massive earthquake devastated Haiti. An engineering team from the UA is looking at ways to reduce the carnage inflicted by future earthquakes while the island and its people recover slowly amid disease and mountains of rubble. A team led by University of Arizona earthquake engineer Robert B. Fleischman, associate professor in the UA department of civil engineering and engineering mechanics, traveled to Haiti in 2010 to examine earthquake damage to buildings in...

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2011-01-18 11:31:25

By Tony Fitzpatrick, Washington University in St. Louis Careful analysis shows seismometer noise includes signals from storms in the South Atlantic and 'footquakes' from soccer matches. If you wander up to a seismograph in a museum, unless you are lucky enough to be there right during an earthquake, all you will see is a small wiggly signal being recorded. What's inside the wiggles is called noise by seismologists, because the signal is always there and originates from the normal activity of...


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
abrosia
  • Wasting away as a result of abstinence from food.
The word 'abrosia' comes from a Greek roots meaning 'not' and 'eating'.