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Latest Seismology Stories

Historical Records Suggest Lake Geneva Is At Risk For Future Deadly Tsunami
2012-10-30 08:55:32

Lawrence LeBlond for redOrbit.com - Your Universe Online Scientists have found evidence of a deadly tsunami that inundated coastal Switzerland in AD 563 after a rockfall near the River Rhone swept Lake Geneva. A wall of water 42 feet high crashed the shore, destroying villages along the coast and killing people and livestock, according to historical accounts of the incident. Scientists now say that Geneva and Lausanne remain vulnerable to similar events today, as do other cities on the...

Earthquake Weather
2012-10-25 20:32:14

Brett Smith for redOrbit.com — Your Universe Online The idea of “earthquake weather” can be traced back to the ancient Greeks, when Aristotle is said to have determined that winds trapped underground cause earthquakes by moving about or escaping through cracks in the surface. However, the scientific community has largely dismissed weather-driven earthquakes as myths or relics of an earlier, more mystical society. In fact, the state government of California has listed...

Spanish Earthquake Blamed On Groundwater Extraction
2012-10-22 10:52:21

Brett Smith for redOrbit.com - Your Universe Online The May 2011 earthquake that struck near the Spanish town of Lorca and killed nine people could have been exacerbated by groundwater extraction, according to a new study from a team led by University of Western Ontario researchers. The 5.1-magnitude quake that occurred along the relatively shallow Alhama de Murcia Fault struck just 1.2 miles northeast of Lorca, caused millions of dollars in damage, and left thousands homeless,...

2010 Korea Bomb 'Tests' Possibly False Alarms
2012-10-09 13:56:55

Amid nuclear tensions, a seismic reality check This spring, a Swedish scientist sparked international concern with a journal article saying that radioactive particles detected in 2010 showed North Korea had set off at least two small nuclear blasts--possibly in experiments designed to boost the yields of much larger bombs. Shortly after, the pot was stirred with separate claims that some intelligence agencies suspected the detonations were done in cooperation with Iran. Now, a new paper...

2012-10-03 14:59:17

Engineers and city planners study surface geology in order to construct buildings that can respond safely to earthquakes. Soft soil amplifies seismic waves, resulting in stronger ground motion than for sites built over bedrock. This study examines the local site response for the city of Ottawa, and the results indicate seismic waves may amplify ground motion greater than expected or referenced in the National Building Code of Canada. Current knowledge of the earthquake activity in Ottawa...

NASA Software Award Won By QuakeSim And NASA Mobile App
2012-09-21 14:36:26

NASA software that models the behavior of earthquake faults to improve earthquake forecasting and our understanding of earthquake processes, and NASA's first mobile application are co-winners of NASA's 2012 Software of the Year Award. The award recognizes innovative software technologies that significantly improve the agency's exploration of space and maximize scientific discovery on Earth. QuakeSim, developed at NASA's Jet Propulsion Laboratory in Pasadena, Calif., is a comprehensive,...

2012-09-20 16:00:01

NASA's first mobile application and software that models the behavior of earthquake faults to improve earthquake forecasting and our understanding of earthquake processes are co-winners of NASA's 2012 Software of the Year Award. The award recognizes innovative software technologies that significantly improve the agency's exploration of space and maximize scientific discovery on Earth. Software engineers at NASA's Ames Research Center in Moffett Field, Calif., developed the NASA App for...

shutterstock_48468172
2012-09-09 10:11:39

redOrbit Staff & Wire Reports A trio of earthquakes that stuck Central and Southern California on Friday morning caused no damage and were apparently unrelated, according to various reports published over the weekend. According to Associated Press reports, a pair of earthquakes hit the Central Valley on Friday morning. The first was magnitude 4.0 and hit at 6:22 a.m. approximately six miles southeast of the city of Huron, while the second was a magnitude 4.1 quake at the same...


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
sough
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'
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