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Latest New Madrid Seismic Zone Stories

2009-03-13 13:10:20

The New Madrid fault system does not behave as earthquake hazard models assume and may be in the process of shutting down, a new study shows.A team from Purdue and Northwestern universities analyzed the fault motion for eight years using global positioning system measurements and found that it is much less than expected given the 500- to 1,000-year repeat cycle for major earthquakes on that fault. The last large earthquakes in the New Madrid seismic zone were magnitude 7-7.5 events in 1811...

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2008-11-21 14:09:50

A government report said on Thursday that people in a vast seismic zone in the southern and midwestern United States would face catastrophic damage if a major earthquake struck in the area. The report also urged builders to keep that risk in mind when developing construction plans. If earthquakes strike in what geologists define as the New Madrid Seismic Zone, they would cause the highest economic losses due to a natural disaster in the United States, according to the Federal Emergency...

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2008-04-25 08:40:00

Wabash Valley Fault - 'New Kid on the Block' To the surprise of many, the earthquake on April 18, 2008, about 120 miles east of St. Louis, originated in the Wabash Valley Fault and not the better-known and more-dreaded New Madrid Fault in Missouri's bootheel.The concern of Douglas Wiens, Ph.D., and Michael Wysession, Ph.D., seismologists at Washington University in St. Louis, is that the New Madrid Fault may have seen its day and the Wabash Fault is the new kid on the block.The earthquake...

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2008-04-21 00:20:00

Although the fault zones beneath the Mississippi River Valley have produced some of the country's largest modern earthquakes east of the Rocky Mountains, scientists acknowledge they don't yet fully understand the Midwestern seismic zone that caused Friday's earthquake in southern Illinois.However, what they do know is rather unsettling.  The Midwest region is covered with old structures not built to withstand seismic activity.  And, when earthquakes do happen, they are felt at...

2006-01-25 06:51:32

FAYETTEVILLE, Ark. (AP) - A researcher at the University of Arkansas says recent research showing a build up of strain in the New Madrid Seismic Zone is inconclusive because the tension can't be seen well enough to determine any earthquake hazard. In a letter that appeared in the journal Nature, Glen Mattioli, professor of geosciences at the J. William Fulbright College of Arts and Sciences, calls for more research to determine the earthquake potential in seismic zone. Mattioli re-examined...

2005-07-19 20:41:42

LITTLE ROCK, Ark. -- Residents of the northeastern part of Arkansas along the New Madrid fault should be prepared for a high-magnitude earthquake, the University of Memphis Center for Earthquake Research and Information says. Gary Patterson, the center's information services director, said Tuesday that there is a "significant probability" that a major trembler could rock the region. "There's always reason to be aware when you're in an area that has the probability to have a a magnitude 6 or...

2005-06-23 21:50:41

MEMPHIS, Tenn. (AP) -- The New Madrid seismic zone remains under enough strain to unleash devastating earthquakes, University of Memphis researchers say. The Memphis research team study published in the journal Nature rebuts the conclusions of a Northwestern University researcher's 1998 report that the dangers of the seismic zone had been "vastly overstated." The U of M team studied the New Madrid, a network of faults branching from near Cairo, Ill., to Marked Tree, Ark., through Global...

2005-06-03 07:06:04

MEMPHIS, Tenn. -- The temblor felt across northwest Tennessee on Thursday caused little damage, but it was strong enough to remind people they live in one of the country's most active earthquake zones. The 4.0 quake on the New Madrid Fault system was centered about 10 miles northwest of Dyersburg near the town of Ridgely. The New Madrid seismic zone produces close to 200 quakes a year. But most are around magnitude 2.0 and unnoticed by anyone but scientists. Quakes of magnitude 4.0 are...

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2005-03-27 07:05:15

LITTLE ROCK, Ark. (AP) -- Two earthquake experts say the quake that produced the deadly tsunami in the Indian Ocean in December should remind residents of the central United States that they live in an area where a devastating quake could occur. Haydar Al-Shukri, a professor at the University of Arkansas at Little Rock, and Harley Benz, a U.S. Geological Survey scientist, cite a 4.2-magnitude earthquake last month at Caraway in northeast Arkansas as another piece of evidence of activity...


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