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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 ?
Although the Bhutan Himalayas do not have a record of earthquakes of high magnitudes in the last 200 years, the recent seismicity is low when compared to the adjacent Himalayan section towards the west.
Both earthquakes had their epicenters at depths of 8.
What causes earthquakes to happen when fluids are injected?
Imagine what it might be like if you were in your bedroom during an earthquake.
During earthquakes, overhead light fixtures are the most common items to fall.
Some seismologists are not convinced: Leonardo Seeber, of Lamont-Doherty Earth Observatory in New York, says that Taipei's earthquakes are focused 10 kilometers (6 miles) underground.
An introduction (Chapter 1) is followed by short summaries of the seismo-tectonic setting of the Americas (Chapter 2), earthquakes in myths and legends (Chapter 3), and earthquake effects (Chapter 4).
This system absorbs over 90% of the damaging force, providing optimum safety and security during earthquakes as severe as the Kobe earthquake of 1995.
Brian Tucker, director of the nonprofit organization GeoHazards International (GHI), says that earthquakes are often the last thing struggling people want to think about.
Now Hutton spends most of her time locating earthquakes and assigning magnitudes.
The Insurance Information Network of California joined a coalition of earthquake scientists, engineers, first responders, and civic leaders today in kicking off the "Dare to Prepare" seismic safety public awareness campaign.