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Latest Seismology Stories

2014-06-16 08:22:55

HOUSTON and RIO DE JANEIRO, June 16, 2014 /PRNewswire/ -- OceanGeo B.V., a geophysical company specializing in multicomponent ocean bottom seismic (OBS) acquisition, today announced that it has been awarded a contract by a major European oil & gas company to acquire a substantial 3D ocean bottom seismic survey offshore Republic of Congo. Acquisition is expected to commence in third quarter 2014. Colin Hulme, OceanGeo's Chief Executive Officer, commented, "We are extremely...

Earthquake Science: Predicting The Next ‘Big One’ For San Francisco
2014-05-20 06:42:38

Lawrence LeBlond for redOrbit.com - Your Universe Online The Great 1906 San Francisco earthquake released as much accumulated stress as a cluster of closely timed temblors did over a 100-year period in the seventeenth and eighteenth centuries. Based on this historical data, new research published in the Bulletin of the Seismological Society of America is looking at two possible scenarios for the San Francisco Bay Area’s next “Big One.” Study coauthor David Schwartz, a geologist...

Fracking May Pose Greater Earthquake Risk Than Previously Believed
2014-05-04 06:04:05

redOrbit Staff & Wire Reports - Your Universe Online The risk of fracking-related underground wastewater disposal could pose a far greater risk of causing earthquakes than experts have previously realized, especially in the US Southwest and Midwest, scientists revealed Thursday at the annual Seismological Society of America (SSA) conference. According to Patrick J. Kiger of National Geographic, the reason why those regions are the most at-risk is because the fault lines there have...

2014-05-02 10:24:40

Man-made quakes need to be included in seismic hazard planning say experts Oil and gas development activities, including underground disposal of wastewater and hydraulic fracturing, may induce earthquakes by changing the state of stress on existing faults to the point of failure. Earthquakes from wastewater disposal may be triggered at tens of kilometers from the wellbore, which is a greater range than previously thought, according to research to be presented today at the annual meeting of...

Accidental Find Offers Big Potential For Research On Alaska's Glaciers
2014-05-01 03:38:49

Seismological Society of America Alaska's seismic network records thousands of quakes produced by glaciers, capturing valuable data that scientists could use to better understand their behavior, but instead their seismic signals are set aside as oddities. The current earthquake monitoring system could be "tweaked" to target the dynamic movement of the state's glaciers, suggests State Seismologist Michael West, who will present his research today at the annual meeting of the Seismological...

2014-04-22 23:12:44

WorkSafe Technologies of Northern California suggests that the recent March earthquakes are a warning to be prepared. Los Gatos, CA (PRWEB) April 22, 2014 As spring takes root and 2014 takes off running, WorkSafe Technologies of Northern California looks back at the events that shook California in the month of March. According to the USGS over 200 Earthquakes shook California in March, 2014. WorkSafe takes this as a sign of things to come. Among the average temblors, two significant March...

2014-04-18 16:21:19

Earthquake Models Help Identify Potentially Impacted Areas so Resiliency Plans, Resources and Materials Can Be Focused on Where They Will Be Needed Most SAN FRANCISCO, April 18, 2014 /PRNewswire/ -- Serving an active earthquake region, advanced preparation for natural disasters is a top priority for Pacific Gas and Electric Company (PG&E) to help ensure safe and reliable operations. During Earthquake Preparedness Month in April, and on the anniversary of the Great 1906 San Francisco...

Earth core structure shutterstock_179800859
2014-04-05 06:41:23

April Flowers for redOrbit.com - Your Universe Online The contours of the Earth's crust are influenced by the high temperatures deep within the Earth's mantle, according to a new study published in Science. A team of researchers, led by Brown University, demonstrated that those temperature differences control the elevation and volcanic activity along mid-ocean ridges, the colossal mountain ranges that line the ocean floor. Forming at the boundaries of tectonic plates, mid-ocean ridges...

2014-04-01 23:32:56

March, 10 2014, 6.9 earthquake off coast of Ferndale, Ca is just one day removed from anniversary of 2011 Tohoku, Japan earthquake. Los Gatos, CA (PRWEB) March 31, 2014 On March 11, 2011 Japan was rocked by a 9.0 earthquake. WorkSafe Technologies of Northern California remembers this day well. Not only because of the catastrophic destruction caused by the mega quake, but the 30,000 catastrophes that were avoided with WorkSafe's help. Since the Fall of 2000, WorkSafe has been helping...

3-D Look At Los Angeles Area Quake Provided By NASA Model
2014-04-01 08:00:46

Alan Buis, NASA's Jet Propulsion Laboratory On March 28, residents of Greater Los Angeles experienced the largest earthquake to strike the region since 2008. The magnitude 5.1 quake was centered near La Habra in northwestern Orange County about 21 miles (33 kilometers) east-southeast of Los Angeles, and was widely felt throughout Southern California. There have been hundreds of aftershocks, including one of magnitude 4.1. Scientists at NASA’s Jet Propulsion Laboratory, Pasadena,...


Latest Seismology Reference Libraries

Seismology
2014-01-12 00:00:00

Seismology is the scientific study of earthquakes and the spread of elastic waves through the Earth or through other planet-like bodies. The field includes studies of earthquake effects, such as tsunamis in addition to diverse seismic sources such as tectonic, volcanic, oceanic, atmospheric, and artificial processes. A related field that utilizes geology to infer information regarding past earthquakes is paleoseismology. A recording of earth motion as a function of time is a seismogram. A...

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...

0_2d32b95d634235dd48b1f1b3e5949a2e
2010-10-07 16:05:32

The Seismometer is an instrument designed to measure the motions of the ground. This includes seismic waves generated by earthquakes, nuclear explosions, and other seismic sources. Records of these activities allow seismologists to map the interior of the Earth, and locate and measure the size of the different sources. There are also seismographs, which is sometimes used in place of the word seismometer. However, a seismograph is the older instrument in which the measuring and recording...

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Word of the Day
virgule
  • A punctuation mark (/) used to separate related items of information.
  • A little rod; a twig.
This word comes from the Late Latin 'virgula,' accentual mark, a diminutive of 'virga,' rod.
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