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A geological event caused by shifting tectonic plates, triggered by a sudden release of energy in the Earth's crust that creates seismic waves. Earthquakes are recorded with a seismometer, also known as a seismograph. The moment magnitude (or the related and mostly obsolete Richter magnitude) of an earthquake is conventionally reported. Magnitudes of 3 or lower are mostly imperceptible; magnitudes of 7 or more cause serious damage over large areas. Intensity of shaking is measured on the modified Mercalli scale
Cause of death Direct trauma due to collapse of buildings, dehydration, shock, crush injury
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References in periodicals archive ?
An earthquake of 5.5 magnitude on Richter scale hit northern parts of Pakistan including Khyber Pakhtunkhwa, Fata and Islamabad earlier on Wednesday morning.
Metrological Department confirmed that the epic center of earthquake was 20km east of Bela City, 4.9 magnitude earthquake jolted Othal, Bela and other parts of Balochistan.
The network should be able to detect even the minutest of earthquakes and it should detect earthquake events from every corner of the country.
4 NATURE UNLEASHED: EARTHQUAKE (2005) THERE'S double trouble as an earthquake hits a Russian nuclear power station.
Hough is a geophysicist at the Earthquake Science Center for the U.S.
Although natural earthquakes occur in many of these same areas -- e.g., Oklahoma, Texas, Arkansas -- the rate of events has climbed precipitously since 2009.
At the 50th anniversary of the Great Alaska Earthquake, West provides insight to Alaska's earthquake history and seismic future, and shares a little bit about himself.
If earthquakes follow the pattern of the 1900s, then a third major earthquake is a very real possibility.
In Kocaeli, a special ceremony was held at the Fleet Command to remember the 420 military personnel killed during the August 17 earthquake.
The largest earthquakes rupturing along the whole subduction zone may have magnitudes up to 8.6.
"While there is a low probability of building collapse for typical structures in moderate-sized earthquakes, significant damage is not uncommon, which can result in costly repairs," Daniel O'Brien, geographic information systems and earthquake program manager for the State Emergency Management Office said.
111-5) provided some additional funding for earthquake activities under NEHRP through FY2010.