Latest Seismology Stories

2011-04-18 13:15:36

The U.S. Geological Survey said that a 6.6-magnitude earthquake struck in the South Pacific on Monday. The survey said that the epicenter was south of the Kermadeic Islands, about 340 miles east-northeast of Auckland, New Zealand. The earthquake had a preliminary magnitude of 6.4, but the U.S. Geological Survey later increased to a 6.6-magnitude quake. The Pacific Tsunami Warning Center said that it does not expect the earthquake to generate "a destructive, Pacific-wide tsunami." A...

2011-04-17 07:21:24

A pair of moderate earthquakes rattled Australia and New Zealand on Saturday.  An initial quake measuring 5.2 on the Richter scale struck about 80 miles southeast of the Australian coastal city of Townsville at 3.31pm local time (0531 GMT), at a depth of about 6 miles below the ocean floor, the U.S. Geological Survey said. The temblor was followed by a magnitude 5.3 aftershock that hit minutes later in Christchurch, New Zealand, which suffered a devastating magnitude 6.3 earthquake...

2011-04-14 06:10:00

A leading scientist on Wednesday said that Japan's northeastern coast has suffered many powerful earthquakes and large tsunamis in the past and nuclear power plants should have been built to withstand these natural disasters, reports AFP. The scientist also noted that the crippled plant in Fukushima may have survived the disaster had the government not put faith in a flawed earthquake prediction system. Geophysics professor Robert Geller said the Japanese authorities rely on annual "hazard...

2011-04-11 09:34:52

Conductivity image hints volcano plume is bigger than thought University of Utah geophysicists made the first large-scale picture of the electrical conductivity of the gigantic underground plume of hot and partly molten rock that feeds the Yellowstone supervolcano. The image suggests the plume is even bigger than it appears in earlier images made with earthquake waves. "It's like comparing ultrasound and MRI in the human body; they are different imaging technologies," says geophysics...

2011-04-09 06:10:00

Countless aftershocks that have shaken the already ravaged country of Japan from the initial 9.0 magnitude earthquake and subsequent tsunami of March 11 have been blamed on the increasing number of people experiencing motion sickness, reports the AFP news agency. "We are seeing a sharp increase in the number of patients complaining of dizziness," the Mejiro University Clinic said on its website. Hideaki Sakata, chief physician at the clinic, which specializes in ear, nose and throat...

2011-04-08 15:43:37

Seismology tip sheet: New Madrid seismic zone, Japan quake, earthquake triggering and more among topics to be discussed This tip sheet highlights presentations at the upcoming international meeting of SSA, which is an international scientific society devoted to the advancement of seismology and its applications in understanding and mitigating earthquake hazards and in imaging the structure of the Earth. These summaries reflect submitted abstracts and the actual presentations will include...

2011-04-07 12:36:48

An earthquake rocked southern and central Mexico on Thursday causing only minor damage. The epicenter of the quake was near Las Choapas, which is a town with a population of 83,000 residents and 370 miles southeast of Mexico City.  The earthquake swayed buildings for several seconds in the capital, and in the Gulf coast state of Veracruz, people ran from their homes and school children assembled on playgrounds. Bernabe Hernandez Perez, head of civil protection in Las Choapas, told The...

2011-04-06 02:00:00

HIMEJI, Japan, April 6, 2011 /PRNewswire/ -- We at the Showa Group would like to inform you about the effects that the recent tragic events in Japan have had on our company. We understand that there have been questions raised about this recently and below you will find in detail the answers to some of the most common ones. We also would like to thank you for your continued support and concern for our well-being. (Logo: http://www.newscom.com/cgi-bin/prnh/20110406/447899 ) 1....

2011-04-01 15:20:01

First such station installed northwest of Columbia, Mississippi Most seismic activity--and earthquakes--have been in the U.S. West. But the East is not out of the woods in terms of risk, geologists say. After a six-year march eastward from the U.S. West Coast, the EarthScope Transportable Array seismic network has reached a major milestone: installation of the first Transportable Array station east of the Mississippi River. Station 345A, located on a private farm about 15 miles northwest of...

2011-03-30 17:07:21

A new National Research Council report presents a 20-year road map for increasing U.S. resilience to earthquakes, including a major earthquake that could strike a highly populated area. The report was mostly written prior to the March 11 earthquake in Japan, but the committee of experts who authored it noted that the Japanese experience is a reminder of the devastation that can occur even in a country acknowledged as a leader in implementing earthquake-resilience measures. In recent decades,...

Latest Seismology Reference Libraries

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...

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...

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
  • Nautical, the visiting and carousing of sailors in the Greenland ships.
This word is apparently from a confusion of two similar Dutch words: 'mallemerok,' a foolish woman, and 'mallemok,' a name for some persons among the crew of a whaling vessel.