In seismology , strong ground motion is the strong earthquake shaking that occurs close to (less than about 50 km from) a causative fault . The strength of the shaking involved in strong ground motion usually overwhelms a seismometer , forcing the use of accelerographs (or strong ground motion accelerometers ) for recording. The science of strong ground motion also deals with the variations of fault rupture, both in total displacement, energy released, and rupture velocity.
4-401: PGV may refer to: Peak Ground Velocity in seismology Pitt–Greenville Airport PhpGedView , web-based genealogy software Puna Geothermal Venture Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title PGV . If an internal link led you here, you may wish to change
8-403: A relic of the pre-instrument days, remains useful in the sense that each intensity-level provides an observable difference in seismic damage. After many years of trying every possible manipulation of accelerometer-time histories, it turns out that the extremely simple peak ground velocity (PGV) provides the best correlation with damage. PGV merely expresses the peak of the first integration of
12-615: The acceleration record. Accepted formulae now link PGV with MM Intensity. Note that the effect of soft soils gets built into the process, since one can expect that these foundation conditions will amplify the PGV significantly. "ShakeMaps" are produced by the United States Geological Survey , provide almost-real-time information about significant earthquake events, and can assist disaster-relief teams and other agencies. The United States Geological Survey created
16-570: The link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=PGV&oldid=1177073570 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Strong ground motion As seismic instruments (and accelerometers in particular) become more common, it becomes necessary to correlate expected damage with instrument-readings. The old Modified Mercalli intensity scale (MM),
#451548