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Latest Seismic wave Stories

c688829799b2eb94577c3c104172ad851
2005-08-25 16:51:37

WASHINGTON -- The giant iron ball at the center of the Earth appears to be spinning a bit faster than the rest of the planet. The solid core that measures about 1,500 miles in diameter is spinning about one-quarter to one-half degree faster, per year, than the rest of the world, scientists from Columbia University's Lamont-Doherty Earth Observatory and the University of Illinois at Urbana-Champaign report in Friday's issue of the journal Science. The spin of the Earth's core is an important...

2005-06-01 15:11:04

TEMPE, Ariz. - Deep within Earth, researchers are finding hints of exotic materials and behaviors unrivaled anywhere else on the planet. Now a team of researchers is making connections between the dynamic activities deep inside Earth and geologic features at its surface. The researchers, which include two seismologists from Arizona State University, have detected a relatively small and isolated patch of exotic material, called an ultra low velocity zone (ULVZ), that may in fact be a "root"...

445a42d0854c8d67995a14ce3237ceab1
2005-01-28 07:30:00

ESA -- It takes seismic force to make the ground give up its secrets. Through the years, those searching for oil and gas have used varied methods to send sound energy into the ground and to record the waves reflected by the geological features beneath the surface. Modern methods include large vibrator trucks and many thousands of surface sensors called geophones, all precisely located to obtain the most useful information with which to explore for hydrocarbons. Today, seismic surveys...

3a7c5f0b30b992aaf4e8fe45410973da1
2005-01-18 16:03:24

GRANTS PASS, Ore. (AP) -- A well drilled 300 feet deep to study fluctuations in groundwater has proven extremely useful for monitoring major earthquakes around the world. The well is especially sensitive because it's drilled into an underground rock formation of granite with fractures that all run the same way, channeling more water into and out of the well, said Evelyn Roeloffs of the U.S. Geological Survey's Cascades Volcano Observatory in Vancouver, Wash. Roeloffs, who has studied the...


Latest Seismic wave 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_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
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'kardia,' heart.
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