Earthquake

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Related to seismic activity: Volcanic activity

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 ?

In general, the seismic activity of whole Pakistan, north Pakistan and south Pakistan is high as demonstrated from the various seismic hazard models for the investigated region.

Strain energy release-based seismic hazard of Pakistan and its surrounding Areas

Vertical movements of the Earth's surface display stress and deformations at the measures of tectonic blocks and the upper mantle and have obvious connection to seismic activity. Their intensity varies in time.

THE RESEARCH OF INTERRELATION BETWEEN SEISMIC ACTIVITY AND MODERN VERTICAL MOVEMENTS OF THE EUROPEAN PERMANENT GNSS-STATIONS

That should lead to a gradual reduction in seismic activity.

Iceland volcano struck by biggest earthquake yet, still no eruption

Scientists are not sure why seismic activity has spiked, but they are studying the phenomenon.

Oklahoma adopts quake precautions

Helen Rimmer is not convinced on the new controls: "Although they say they can increase monitoring of seismic activity and risk, that's not going to reduce the risk and it won't make it safe.We simply think this is a risk not worth taking when we don't need the gas, we need to develop our renewable energy resources."

Friends of The Earth: Uncertainties over "fracking"

The SETS will also measure seismic activity caused by rocks cooling inside the planet.

Imperial takes the lead on probing Marsquakes

Newport Corp.'s Earthquake Restraint System--Model ERS2010--is designed to restrict the motion of pneumatically isolated optical table tops during seismic activity. The system is certified and in compliance with the 2009 International Building Code and the 2010 California Building Code.

Earthquake restraint system prevents table tipping

"The risk of seismic activity associated with hydraulic fracking operations is small and the probability of damage is extremely small - we suggest fracking can continue under our recommendations," one of the report's authors, the British Geological Society's Brian Baptie, said at a briefing.

UK gives shale gas fracking green light

While proponents of fracking cite it as a boon for the economy and say that there's no proof of a direct link between fracking and seismic activity, the insurance industry could and should be put on notice.

Waste water from hydraulic fracturing may have led to Ohio earthquakes: state regulators have asked for a moratorium on injection wells from fracking

The team has installed a seismic monitoring station there to alert them to seismic activity that may be the precursor to volcanic activity, according to Al-Maflahi.

Light volcanic eruptions in 'Jabal Al-Zubair'

At the same time, there has been a big upswing in seismic activity in the North Sea this year.

-Analyst says seismic market to turn in 2012

The Commission admits that it needs first-hand information on contingency plans and safety measures in place in the EU in the event of seismic activity. This includes information on controls effectuated by national authorities, safety requirements for earthquakes and emergency power supply systems for reactor cooling.