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Latest Earthquake Stories

Volcanic Plumbing Provides Clues on Eruptions and Earthquakes
2012-04-13 03:49:08

Two new studies into the "plumbing systems" that lie under volcanoes could bring scientists closer to understanding plate ruptures and predicting eruptions–both of which are important steps for protecting the public from earthquake and volcanic hazards. International teams of researchers, including two scientists from the University of Rochester, have been studying the location and behavior of magma chambers on the Earth's mid-ocean ridge system–a vast chain of volcanoes along...

Indonesian Earthquake: Update
2012-04-11 08:37:20

Lawrence LeBlond for RedOrbit.com Wednesday´s powerful 8.6-magnitude earthquake that struck off Indonesia´s western coast at 2:38 p.m. local time, was followed by fears of a tsunami, gripping a region that still had the 2004 tsunami -- one that ravaged numerous coastal communities along the Indian Ocean and killing more than 230,000 people -- fresh in their minds. But hours after the fears of a tsunami subsided, a strong 8.2-magnitude aftershock hit the region sparking a new...

8.7 Earthquake Prompts Tsunami Warnings For Indian Ocean Coastlines
2012-04-11 05:33:00

Lawrence LeBlond for RedOrbit.com A tsunami warning has been issued for the entire Indian Ocean on Wednesday April 11 after a massive 8.7 magnitude earthquake off the coast of Indonesia at 2:38 p.m. local time (3:38 a.m. EST) sent residents around the region out of their homes and offices in fear. The US Geological Survey (USGS) said the temblor was centered 20 miles beneath the ocean floor, a little more than 300 miles from the provincial capital of Banda Aceh. The quake put emergency...

2012-03-30 07:56:15

A new study evaluates the seismic hazards for the entire Central America, including specific assessments for six capital cities, with the greatest hazard expected for Guatemala City and San Salvador, followed by Managua and San José, and notably lower in Tegucigalpa and Panamá City. The study, published in the April issue of the Bulletin of the Seismological Society of America (BSSA), included input from seismic hazard experts from Costa Rica, Guatemala,...

2012-03-29 22:36:04

The San Jacinto Fault (SJF) Zone is a seismically active, major component of the overall southern San Andreas Fault system. Researchers from San Diego State University (SDSU) and U.S. Geological Survey have mapped evidence of past ruptures consistent with very large earthquakes along the Clark Fault, an individual strand associated with the SJF. James Barrett Salisbury, now at Arizona State University and formerly a graduate student at SDSU, and his colleagues mapped the terrain by using...

2012-03-13 09:08:43

Highlights include several studies based in the U.S. Sierra Nevada, including a description of "magma fingers" and the formation of granite in the high Sierra crest near Yosemite National Park. Other studies investigate knickzones in the South Fork of the Eel River, California; the Rodgers Creek-Maacama fault system in the northern California Coast Ranges and its relation to the San Andreas fault; and the frequency and severity of destructive debris flows in the Pacific Northwest....

Marking The One-Year Anniversary Of The Japanese Earthquake And Tsunami
2012-03-10 06:14:43

World leaders, scientists, and members of the media are among those pausing this weekend to reflect on the one-year anniversary of the 9.0 magnitude earthquake that struck Japan on March 11, 2011 and, combined with the ensuing tsunami, caused widespread death and destruction throughout the country. "As we mark one year since the catastrophic earthquake, tsunami and nuclear disasters in Japan, Michelle and I join all Americans in honoring the memory of the 19,000 victims lost or missing,"...

2012-03-09 10:34:54

New research to look at a tsunami´s "phantom currents" that arrive late and can cause considerable damage On the one-year anniversary of the devastating Japanese tsunami, engineers from the USC Viterbi School of Engineering Tsunami Research Center are working with the State of California to better understand the damaging currents caused by tsunamis. Funded by the California Geological Survey, the California Emergency Management Agency, and the Federal Emergency Management Agency,...

Audio Created From Japanese Seismic Wave Records
2012-03-07 05:43:29

A scientist has converted last year's 9.0-magnitude Tohoku-Oki, Japan earthquake's seismic waves into audio files to allow researchers to "hear" what the quake sounded like as it moved through the earth. Zhigang Peng, associate professor in Georgia Tech´s School of Earth and Atmospheric Sciences, was able to capture the sound because of thousands of seismometers in the region and Japan's willingness to share their measurements. “We´re able to bring earthquake data to...

The Physics Of Earthquake Forecasting
2012-03-02 03:42:50

One year on from the magnitude-9.0 earthquake that unleashed a devastating tsunami and caused a partial meltdown of the Fukushima Daiichi nuclear plant, this month's special issue of Physics World, on the theme of "Physics and the Earth", includes an investigation by journalist Edwin Cartlidge into the latest advances in earthquake forecasting. In addition to the special issue, physicsworld.com hosts an exclusive video documentary reviewing the fundamental science behind earthquakes and...


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
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'