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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
References in periodicals archive ?
Far more attention was given to the quake in Pakistan, where officials said at least 35 people were killed in villages just across the border from Iran.
If they do notice patterns, scientists might be able to predict when a quake will occur.
The government invoked the law in the Kobe area a month after the quake.
Analyses conducted soon after the quake--ones that considered the size and duration of the ground motions recorded by remote seismometers--suggested that the quake measured a magnitude 7.
Thursday's quakes brought the total number of quakes measuring lower 5 and above on the Izu islands since the series of quakes started in late June to 22, the agency added.
Shallow coral reefs around islands west of Sumatra chronicled the uplift and subsidence that resulted from massive quakes that struck that region recently, a new study shows.
In the days that followed Turkey's quake, death was so widespread, rescuers stored decaying bodies on an icehockey rink to prevent an outbreak of cholera, a deadly bacterial disease.