News tagged with earthquake

Related topics: tsunami , japan , quake , tectonic plates , earth

Parents cautioned over 'common' brain injury

A newly developed paediatric concussion kit will help parents identify crucial signs of traumatic brain injury (TBI), one of the leading causes of acquired disability and death in children.

Apr 27, 2012
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U.S. health systems not ready for catastrophes: report

(HealthDay) -- In many parts of the United States, the infrastructure and systems to deliver health care during or after catastrophic disasters such as major earthquakes or widespread disease outbreaks are ...

Mar 21, 2012
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1,000 women a day die in childbirth, says MSF

About 1000 women die each day in childbirth or from preventable complications related to pregnancy, humanitarian group Medecins Sans Frontieres (Doctors Without Borders) said Thursday.

Mar 08, 2012
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Earthquake

An earthquake (also known as a tremor or temblor) is the result of 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 of an earthquake is conventionally reported, or the related and mostly obsolete Richter magnitude, with magnitude 3 or lower earthquakes being mostly imperceptible and magnitude 7 causing serious damage over large areas. Intensity of shaking is measured on the modified Mercalli scale.

At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacing the ground. When a large earthquake epicenter is located offshore, the seabed sometimes suffers sufficient displacement to cause a tsunami. The shaking in earthquakes can also trigger landslides and occasionally volcanic activity.

In its most generic sense, the word earthquake is used to describe any seismic event — whether a natural phenomenon or an event caused by humans — that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by volcanic activity, landslides, mine blasts, and nuclear experiments. An earthquake's point of initial rupture is called its focus or hypocenter. The term epicenter refers to the point at ground level directly above the hypocenter.

This text uses material from Wikipedia licensed under CC BY-SA