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2011-03-07 13:51:20

The Christchurch, New Zealand earthquake that took place on February 22 has been illustrated in new radar imagery. The magnitude 6.3 tremor killed over 160 people and shattered a city reeling from a previous seismic event in September. Data downloaded from the Japanese Alos spacecraft mapped the way the ground deformed during the most recent quake. It shows clearly that the focus of the tremor was right under the city's south-eastern suburbs. The type of image is known as a synthetic...

2011-03-03 07:45:00

BERKELEY, Calif., March 3, 2011 /PRNewswire/ -- Rosendin Electric (www.rosendin.com), the nation's largest private electrical contractor and a 100-percent employee-owned company, today announced that the company has started work on the seismic retrofit of the California Memorial Stadium at the University of California, Berkeley. This construction project, valued at $321 million, includes a modular design to protect the structure in the event of an earthquake and an upgrade of the entire...

2011-02-25 15:15:54

By studying seismographs from the earthquake that hit Chile last February, earth scientists at the Georgia Institute of Technology have found a statistically significant increase of microearthquakes in central California in the first few hours after the main shock. The observation provides an additional support that seismic waves from distant earthquakes could also trigger seismic events on the other side of the earth. The results may be found online in the journal Geophysical Research...

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2011-02-25 11:13:28

A day after a powerful magnitude 6.3 earthquake rocked Christchurch, a city of 377,000 on New Zealand's South Island, on Feb. 22, 2011, the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument on NASA's Terra spacecraft imaged the Christchurch region. The imaging was done at the request of the International Charter, Space and Major Disasters, which provides emergency satellite data to federal agencies in disaster-stricken regions. Two images are presented here....

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...

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2011-02-23 07:15:00

The official death toll resulting from Tuesday's a 6.3 magnitude earthquake in the New Zealand city of Christchurch has climbed to 75, but that number is expected to rise even more--especially now that police called off the search for survivors at a television office building, the Daily Mail reported Wednesday morning. The website of the British newspaper said that between 80 and 100 or more people are believed to have been in the Canterbury TV building, which was badly damaged by the tremors...

2011-02-08 23:23:55

2000 years of Chinese records shows migrating mid-continent earthquakes This December marks the bicentennial of the New Madrid earthquakes of 1811-12, which are the biggest earthquakes known to have occurred in the central U.S. Now, based on the earthquake record in China, a University of Missouri researcher says that mid-continent earthquakes tend to move among fault systems, so the next big earthquake in the central U.S. may actually occur someplace else other than along the New Madrid...

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2011-01-31 09:05:00

The region of Chile that was rocked by an earthquake last February could be at risk for a larger series of tremors, according to a new study published online by the journal Nature Geoscience on Sunday. The 2010 earthquake, which hit the Maule region of the South American country on February 27, "was not unexpected," according to researchers from Italy's National Institute of Geophysics and Vulcanology. "A clearly identified seismic gap existed in an area where tectonic loading has been...

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2011-01-25 07:31:01

A United Nations-backed research report showed Monday that 2010 was among the worst years on record for natural disasters over the past 20 years, leaving upwards of 300,000 people dead, and countless more injured and/or displaced. Nearly two-thirds of the total death toll, came from the devastating Haiti earthquake a year ago, that claimed the lives of more than 222,500 people, according to the Belgium-based Center for Research on the Epidemiology of Disasters (CRED). Last summer's heatwave...

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2011-01-18 11:31:25

By Tony Fitzpatrick, Washington University in St. Louis Careful analysis shows seismometer noise includes signals from storms in the South Atlantic and 'footquakes' from soccer matches. If you wander up to a seismograph in a museum, unless you are lucky enough to be there right during an earthquake, all you will see is a small wiggly signal being recorded. What's inside the wiggles is called noise by seismologists, because the signal is always there and originates from the normal activity of...


Latest Earthquake Reference Libraries

Pacific Ring of Fire
2013-02-19 13:18:27

The Pacific Ring of Fire, or Ring of Fire for short, is an area where a large number of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean. In a 25,000 mile horseshoe shape, it’s associated with an almost continuous series of oceanic trenches, volcanic belts, volcanic arcs and/or plate movement. The Ring of Fire contains 452 volcanoes and is home to over 75 percent of the world’s active and dormant volcanoes. It’s sometimes called the circum-Pacific belt or the...

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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...

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Word of the Day
glogg
  • Scandinavian punch made of claret and aquavit with spices and raisins and orange peel and sugar.
This word comes from the Swedish 'glogg,' which is an alteration of 'glodgat,' mulled (wine).
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