On the use of a seismic sensor as a seismic source
| Autor: | Johan O. A. Robertsson, David Halliday, Taiwo Fawumi, Ed Kragh |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Seismometer
Seismic vibrator Synthetic seismogram Acoustics Geophone Seismic interferometry Gemology Sense (electronics) Seismic noise Signal Physics::Geophysics Geophysics Geochemistry and Petrology Surface wave Group velocity Seismic refraction Geomorphology Vertical seismic profile Seismology Geology Voltage |
| Zdroj: | GEOPHYSICS. 78:A39-A43 |
| ISSN: | 1942-2156 0016-8033 |
| DOI: | 10.1190/geo2013-0084.1 |
| Popis: | We investigated the use of seismic sensors as small seismic sources. A voltage signal is applied to a geophone that forces the mass within the geophone to move. The movement of the mass generates a seismic wavefield that was recorded with an array of geophones operating in the conventional sense. We observed higher-frequency (25 Hz and above) surface and body waves propagating from the geophone source at offsets of 10 s of meters. We further found that the surface waves emitted from geophone sources can be used to generate a surface-wave group velocity map. We discuss potential developments and future applications. |
| Databáze: | OpenAIRE |
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