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Latest Earthquake Stories

Using Seismic Waves To Detect Tunnels Is Not As Simple As It Sounds
2012-12-10 15:01:35

Sandia National Laboratories You´d think it would be easy to use seismic waves to find tunnels dug by smugglers of drugs, weapons or people. You´d be wrong. Nedra Bonal of Sandia´s geophysics and atmospheric sciences organization is nearing the end of a two-year study, “Improving Shallow Tunnel Detection From Surface Seismic Methods,” aimed at getting a better look at the ground around tunnels and learning why seismic data finds some tunnels but not others....

Powerful Magnitude 7.0 Earthquake Rocks Japan, Touches Off Small Tsunami
2012-12-07 09:00:09

Lawrence LeBlond for redOrbit.com - Your Universe Online Japan, still reeling with the aftermath of a powerful earthquake and destructive tsunami in March 2011, has been hit again. A magnitude 7.3 earthquake struck off the coast at 5:18 p.m. local time Friday evening triggering a small 3-foot-high tsunami that swept against the Japanese mainland nearly 45 minutes later. Evacuation orders came streaming in over TV and radio channels shortly after the quake struck and countless coastal...

2012-12-05 16:24:42

Technique provides insight into ancient formation of underwater plateau Scientists have long used the speed of seismic waves traveling through the Earth as a means of learning about the geologic structure beneath the Earth's surface, but the seismic waves they use have typically been generated by earthquakes or man-made explosions. A University of Rhode Island graduate student is using the tiny seismic waves created by ocean waves crashing on shorelines around the world to learn how an...

Scientists Warn Of Major Earthquakes In Himalayas And Pacific Northwest
2012-12-04 15:18:09

Lee Rannals for redOrbit.com — Your Universe Online Scientists at the American Geophysical Union meeting in San Francisco this week reported that the Himalayas and Pacific Northwest could experience major earthquakes. Researchers have begun studying the complexity of the Himalayan range in greater detail, particularly the fault that separates the two plates known as the Main Himalayan Thrust (MHT). Previous observations indicated a fault that dipped a few degrees to the...

Russian Far East A Hotbed Of Seismic, Volcanic Activity: Potential Threat To Pacific Basin
2012-12-04 13:10:18

April Flowers for redOrbit.com - Your Universe Online The Soviet government has long kept outsiders away from the Russian Far East, shrouding a source of powerful earthquakes and volcanic activity on the Pacific Rim in secrecy. In the last 20 years, however, research has shown that the Kamchatka Peninsula and the Kuril Islands are a seismic and volcanic hotbed. This area has the potential to trigger tsunamis that pose a risk to the rest of the Pacific Basin. As an example, in...

2012-11-15 12:22:19

McLEAN, Va., Nov. 15, 2012 /PRNewswire-USNewswire/ -- Several potentially preventable disasters have occurred during the past decade, including the recent outbreak of rare fungal meningitis linked to steroid shots given to 13,000 patients to relieve back pain. Before that, the 9/11 terrorist attacks in 2001, the Space Shuttle Columbia explosion in 2003, the financial crisis that started in 2008, the Deepwater Horizon accident in the Gulf of Mexico in 2011, and the Fukushima tsunami and...

In The Last 300,000 Years The Alhama de Murcia Fault Has Experienced At Least 6 Major Earthquakes
2012-11-12 13:13:08

FECYT - Spanish Foundation for Science and Technology Enjoying Spanish participation, an international group of researchers have analyzed the most recent history of the Alhama de Murcia fault. They discovered that it has experienced six major earthquakes above 7 on the Richter scale. According to the scientists, this provides "convincing evidence" that the maximum earthquake magnitudes in the area are higher than originally thought. Since 2001, researchers from the Universities of...

Landslides Triggered At Extraordinary Distances From 2011 Virginia Quake
2012-11-06 09:45:51

Seismological Society of America The 2011 Mineral, Virginia M-5.8 earthquake was felt over an extraordinarily large area. A new study details landslides triggered by the earthquake at distances four times greater and over an area 20 times larger than previously documented for M-5.8 earthquakes worldwide. The study, to be published in the December issue of the Bulletin of the Seismological Society of America (BSSA), describes physical confirmation of previous observations that ground...

Why Some Quakes Shake Faster Revealed By Tabletop Fault Model
2012-10-31 15:28:04

University of California - Berkeley The more time it takes for an earthquake fault to heal, the faster the shake it will produce when it finally ruptures, according to a new study by engineers at the University of California, Berkeley, who conducted their work using a tabletop model of a quake fault. "The high frequency waves of an earthquake – the kind that produces the rapid jolts – are not well understood because they are more difficult to measure and more difficult to...

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...


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...

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...

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