Modeling fault-zone guided waves of microearthquakes in a geothermal reservoir
- Univ. of North Carolina, Chapel Hill, NC (United States)
- Duke Univ., Durham, NC (United States). Dept. of Geology
Fault-zone guided waves have been identified in microearthquake seismograms recorded at the Coso Geothermal Field, California. The observed guided waves have particle motions and propagation group velocities similar to Rayleigh wave modes. A numerical method has been employed to simulate the guided-wave propagation through the fault zone. By comparing observed and synthetic waveforms the fault-zone width and its P- and S-wave velocity structure have been estimated. It is suggested here that the identification and modeling of such guided waves is an effective tool to locate fracture-induced, low-velocity fault-zone structures in geothermal fields.
- Sponsoring Organization:
- Department of the Navy, Washington, DC (United States); Idaho National Engineering Lab., Idaho Falls, ID (United States); USDOE, Washington, DC (United States)
- OSTI ID:
- 533074
- Journal Information:
- Geophysics, Vol. 62, Issue 4; Other Information: PBD: Jul-Aug 1997
- Country of Publication:
- United States
- Language:
- English
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