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Latest San Andreas Fault Stories

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2011-06-28 07:25:33

Study finds that faults beneath the Salton Sea ruptured during Colorado River floods and may have triggered large earthquakes on the southern San Andreas Fault Southern California's Salton Sea, once a large natural lake fed by the Colorado River, may play an important role in the earthquake cycle of the southern San Andreas Fault and may have triggered large earthquakes in the past. Researchers at Scripps Institution of Oceanography, UC San Diego, the U.S. Geological Survey (USGS) and the...

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2011-03-28 05:55:00

Mega-quakes, such as the recent massive temblor off the coast of Japan are not expected to set off other large quakes in distant regions of the world, according to a study published by the US Geological Survey (USGS). There is a current novel theory that a large quake in one continent can unleash a quake in another. Tom Parsons and Aaron Velasco of the US Geological Survey and the University of Texas at El Paso explained their counter theory to AFP. Parsons and Velasco looked at all...

2011-03-21 19:44:52

TAU researchers investigate sediment slides and coral reefs to study historic earthquake patterns In the wake of the devastating loss of life in Japan, the urgent question is where the next big earthquake will hit. To answer it, geologist Prof. Zvi Ben-Avraham and his doctoral student Gal Hartman of Tel Aviv University's Department of Physics and Planetary Sciences in the Raymond and Beverly Sackler Faculty of Exact Sciences are examining coral reefs and submarine canyons to detect earthquake...

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2011-03-15 07:36:22

Learning from history, TAU invention can improve earthquake prediction today Earthquakes are one of the world's biggest enigmas "” impossible to predict and able to wreak untold damage within seconds. Now, a new tool from Tel Aviv University may be able to learn from earthquakes of the ancient past to better predict earthquakes of the future. Prof. Shmuel Marco of Tel Aviv University's Department of Geophysics and Planetary Sciences in the Raymond and Beverly Sackler Faculty of Exact...

2011-02-24 13:56:55

The terribly destructive earthquake that just hit Christchurch, New Zealand, was only a moderate 6.3 magnitude, but had certain characteristics that offer an important lesson to cities up and down the West Coast of North America that face similar risks, experts say. The New Zealand earthquake killed dozens "“ and some fear the death toll may rise to the hundreds "“ and was an aftershock of the much more powerful 7.1 magnitude earthquake that struck that nation last September near...

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...

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2010-12-17 08:05:14

New technologies developed by NASA and other agencies are revealing surprising insights into a major earthquake that rocked parts of the American Southwest and Mexico in April, including increased potential for more large earthquakes in Southern California. At the fall meeting of the American Geophysical Union in San Francisco, scientists from NASA and other agencies presented the latest research on the magnitude 7.2 El Mayor-Cucapah earthquake, that region's largest in nearly 120 years....

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2010-08-22 08:51:59

In a US study, researchers said that strong earthquakes recorded along the San Andreas fault in southern California are more frequent than previously believed, and they fear the "Big One" could be just around the corner.Scientists at the University of California at Irvine and Arizona State University examined geological records stretching back 700 years along the fault line about 100 miles northwest of Los Angeles.They found that strong earthquakes -- 6.5 to 7.9 magnitude -- occurred every 45...

2010-06-25 14:44:31

California's San Andreas fault is notorious for repeatedly generating major earthquakes and for being on the brink of producing the next "big one" in a heavily populated area. But the famously violent fault also has quieter sections, where rocks easily slide against each other without giving rise to damaging quakes. The relatively smooth movement, called creep, happens because the fault creates its own lubricants---slippery clays that form ultra-thin coatings on rock fragments, geologist Ben...

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2010-06-20 08:05:18

Small stresses might bring big results, says study In nature, random signals often fall mysteriously in step. Fireflies flashing sporadically in early evening soon flash together, and the same harmonic behavior can be seen in chirping crickets, firing neurons, swinging clock pendulums and now, it turns out, rupturing earthquake faults. Scientists have well established that big earthquakes can trigger other big quakes by transferring stress along a single fault, as successive earthquakes in...