Earthquake

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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 ?
It was recalled that three mild tectonic earthquakes also jolted the said province on Saturday but no reported damage or injury.
COTABATO CITY -- Mindanao was hit on Saturday by four fairly strong tectonic earthquakes that shook the eastern side of the island.
Two mild tectonic earthquakes jolted Siargao Islands and Agusan del Norte at predawn today, Jan.
Four mild tectonic earthquakes shook Agusan del Sur and Surigao provinces today, January 16, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.
BUTUAN CITY - Two mild tectonic earthquakes jolted Davao Oriental Saturday morning, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.
The two tectonic earthquakes did not inflict any damage or injury, it said.