(redirected from seismic activity)
Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.
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 ?
It's currently an insurable risk that has not gotten too much attention from the insurance marketplace right now," he said, "because we need more evidence that there's a link between seismic activity and fracking.
It is clear that as a general tendency, the seismic activity of NRV has decreased gradually since 1992 (except on some particular dates associated with minor volcanic crises), without ash emission or volcanic eruptions.
Those veins, along with other characteristics of the rocks, indicate that seismic activity along the ancient subduction zone occurred at depths of 4 km and greater, says Remitti.
Susan Tae, a supervising regional planner for Los Angeles County, said the potential seismic activity was a concern but that grading would lessen the danger.
Oyama on Miyakejima Island and the accompanying seismic activity, about 84% of all perceptible quakes, or 14,785, occurred in the Izu Islands.
Agency officials said the focus of the current bout of seismic activity, located at a depth of 5-10 kilometers in waters north of Kawanazaki in Ito, is close to area struck by a similar spate of quakes in March last year.
They found that variations in the speed of the Earth's rotation could set off intense seismic activity, particularly in the tropical-equatorial regions where the population density is very high.
It is to be pointed out that a building of 10-marla and above, having a height of 45 feet including basement additionally added, completely made of brick masonry is vulnerable to seismic activity.
Tenders are invited for Verifying the safety of Neerasagara Dam Structure against Seismic Activity as per Technical Preparedness Act.
The local seismic activity witnessed along the western side of the Kingdom in general and the Red Sea coast in particular is due to the forces that affect the terminal borders of the Kingdom and move inside the Arabian Plate.
A Texas House subcommittee on seismic activity met on Monday to hear what state regulators are doing about it.