A geophone is a device that converts ground movement (velocity) into voltage, which may be recorded at a recording station. The deviation of this measured...

The geophone, now often known as the ocean drum is a percussion instrument, invented by the French composer Olivier Messiaen for use in his large composition...

at specified locations on the surface by what are known as receivers (geophones or hydrophones). Before seismic data can be acquired, a seismic survey...

field of a magnet attached to the frame. This design is often used in a geophone, which is used in exploration for oil and gas. Seismic observatories usually...

to conduct seismic testing in the swamp using 2,025 charges and 4,000 geophones. On Lot 27, Gary and Marty metal detect the spoils from a previous excavation...

induced fractures. Microseismic activity is measured by placing an array of geophones in a nearby wellbore. By mapping the location of any small seismic events...

denoted D0, D200, D300, etc.). Two types of deflection sensors are used: geophones and force-balance seismometers. Seismometers have built-in calibration...

sometimes once sometimes three times a day, in deadly silence with the geophone to your ears, wondering whether the sound you heard was the Boche working...

the team introduced two new pieces of equipment: one is a custom-made geophone, which detects vibrations and flashes a series of LEDs that measure the...

Yoruba Unpitched Membranophone Gendèr Indonesia Pitched 111.222 Idiophone Geophone France Unpitched Membranophone Ghatam India Unpitched Idiophone Glasschord...