Quantcast

Latest Seismology Stories

Scientists Study Deep Rocks Under Pacific Ocean
2012-03-23 07:12:56

Scientists interested in the construction of the rock layers immediately under the Earth´s crust, the lithosphere and asthenosphere, have new tools to help analyze these layers and further understand plate tectonics. The researchers have been using seismic waves to study the lithosphere-asthenosphere boundary, or LAB. This boundary is where the hot, convecting mantle asthenosphere and the overlying cold and rigid lithosphere meet. It has been found that seismic waves move faster...

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...

Image 1 - First EarthScope 'Transportable Array' Seismic Station Reaches US East Coast
2012-02-18 04:35:13

Data generate 3-D 'CT scan' of North American continent's interior Yulee, Florida. Not a place one usually thinks of as an Earthquake Epicenter. But this swampland not far from the Georgia state line is now home to a state-of-the-art seismic station known as 457A. Here, within a few miles of the Atlantic Ocean, 457A has been installed to record ground motion from earthquakes. Earthquakes do happen on the East Coast of the United States, as the Virginia quake of August, 2011 attests....

Image 1 - Fukushima Still Faces Earthquake Risk
2012-02-14 12:04:46

Seismic risk at the Fukushima nuclear plant increased after the magnitude 9 earthquake that hit Japan last March, scientists report. The new study, which uses data from over 6,000 earthquakes, shows the 11 March tremor caused a seismic fault close to the nuclear plant to reactivate. The results are now published in Solid Earth, an open-access journal of the European Geosciences Union (EGU). The research suggests authorities should strengthen the security of the Fukushima Daiichi nuclear...

Image 1 - 3D Imaging Technology Could Help Multi-Fault Earthquake Preparations
2012-02-10 06:19:20

[ Watch the Video ] A team of U.S., Mexican, and Chinese geologists have used a new tool to help pinpoint the precise locations where earthquakes caused the planet's crust to rupture and alter the landscape, resulting in what they are calling the "most comprehensive before-and-after picture“¦ of an earthquake zone to date." The 3D images, which were published in the February 10 issue of the journal Science, were captured from a 7.2. magnitude earthquake that occurred near...


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...

More Articles (3 articles) »
Word of the Day
holluschickie
  • A 'bachelor seal'; a young male seal which is prevented from mating by its herd's older males (mated bulls defending their territory).
This comes from the Russian word for 'bachelors.'
Related