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geophone

1. n. [Geophysics]

A device used in surface seismic acquisition, both onshore and on the seabed offshore, that detects ground velocity produced by seismic waves and transforms the motion into electrical impulses. Geophones detect motion in only one direction. Conventional seismic surveys on land use one geophone per receiver location to detect motion in the vertical direction. Three mutually orthogonal geophones are typically used in combination to collect 3C seismic data. Hydrophones, unlike geophones, detect changes in pressure rather than motion.

Synonyms: jugreceiverseismometer

See: accelerometerarraycablechannelcheck-shot surveycouplingdampingdatum correctiondetectordisplacementdownhole receiverdropoutfan shootingfirst breakfour-component seismic datageophone intervalground rollgroup intervalhodogramhydrophoneimagejug hustlermulticomponent seismic datanestocean-bottom cablerandom noiseseismographspreadthree-component seismic datavelocity analysis

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