2002
3-D finite-difference simulation of seismic fault zone waves - Application to the fault zone structure of the Mozumi-Sukenobu fault, central Japan
EARTH PLANETS AND SPACE
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- ,
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- Volume
- 54
- Number
- 11
- First page
- 1055
- Last page
- 1058
- Language
- English
- Publishing type
- DOI
- 10.5636/eps.54.11_1055
- Publisher
- TERRA SCIENTIFIC PUBL CO
Fault zone waves have the potential to be a powerful tool to reveal the fine structure of a fault zone down to the seismogenic depth. Seismic fault zone waves include head waves, trapped waves and direct body waves propagating in the fault zone. 3-D numerical simulation is necessary to interpret the waveforms in the presence of low-velocity zones with relatively complex fault structure. We computed finite difference (FD) synthetic seismograms to fit the seismograms of explosions, which contain frequencies up to 25 Hz, recorded by a linear seismometer array across the Mozumi-Sukenobu fault, central Japan. We find fault zone head waves, direct P waves propagating within the low-velocity zone and wave trains following the direct P waves associated with the fault for both observed and synthetic waveforms. Thus, modelling of fault zone waves is expected to determine details of complex fault zone structure.
- Link information
- ID information
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- DOI : 10.5636/eps.54.11_1055
- ISSN : 1343-8832
- CiNii Articles ID : 10010125125
- Web of Science ID : WOS:000180666700011