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Facts about the New Madrid Seismic Zone

October 10th, 2011 | Comments Off | Posted in Geology.com

“This poster summarizes a few of the more significant facts about the series of large earthquakes that struck the New Madrid seismic zone of southeastern Missouri, northeastern Arkansas , and adjacent parts of Tennessee and Kentucky from December 1811 to February 1812.”

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Virginia Earthquake Aftershocks

August 31st, 2011 | Comments Off | Posted in Geology.com

Numerous aftershocks have been felt following the M5.9 earthquake that occurred on August 23 near Mineral , Virginia . The strongest have been M4.2 and M4.5.

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Central Virginia Experiences an Earthquake Every Year or Two

August 23rd, 2011 | Comments Off | Posted in Geology.com

The Central Virginia Seismic Zone is an area that has been experiencing small earthquakes every year or two since at least 1774. The August 23, 2011 earthquake was the largest to be recorded in the zone.

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Colorado: Largest Earthquake Since 1973

August 23rd, 2011 | Comments Off | Posted in Geology.com

The largest earthquake to strike Colorado since 1973 occurred at 11:46 PM last night near the community of Trinidad along the New Mexico border. A few buildings have been damaged by the M5.3 earthquake but early news does not report injuries or deaths. The area where the quake occurred has a history of small earthquakes

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1811-1812 New Madrid Earthquakes Bicentennial

August 14th, 2011 | Comments Off | Posted in Geology.com

“Several of the largest historical earthquakes to strike the continental United States occurred in the winter of 1811-1812 along the New Madrid Seismic Zone, which stretches from just west of Memphis, Tennessee into southern Illinois . These earthquakes produced at least three temblors between magnitude 7-8, and hundreds of aftershocks.”

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Surprising Data from the Magnitude 9.0 Tohoku-Oki Earthquake

May 23rd, 2011 | Comments Off | Posted in Geology.com

Caltech researchers publish surprising information about the Magnitude 9.0 Tohoku-Oki Earthquake that occurred offshore of Sendai, Japan on March 11, 2011. No other great earthquake has more data from satellites, seismograph networks and tsunami monitoring stations.

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Earthquake Risk in the Central United States

April 27th, 2011 | Comments Off | Posted in Geology.com

An article on ScienceMag.org reviews several perspectives on earthquake risk in the New Madrid Seismic Zone of the central United States.

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Deadly Tornadoes Tear Through the South

April 17th, 2011 | Comments Off | Posted in Geology.com

Dozens of people were killed this weekend as deadly tornadoes tore through parts of Oklahoma, Arkansas , Mississippi, Alabama , Georgia and North Carolina.

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Lower Magnitudes for the 1811-12 New Madrid Earthquakes?

April 14th, 2011 | Comments Off | Posted in Geology.com

Based upon reviews of historical accounts of the large earthquakes that occurred in the New Madrid, Missouri area in 1811 and 1812, experts now estimate that their magnitudes were significantly lower – down from magnitude 7.7 to about 7.0.

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M6.6 Earthquake Beneath Honshu

April 11th, 2011 | Comments Off | Posted in Geology.com

A magnitude 6.6 earthquake occurred about 10 kilometers below Honshu, Japan at 5:16 PM local time. A USGS estimated intensity map is shown below.

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