A geology-based 3D velocity model
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- journal_title：Bulletin of the Seismological Society of America
- Contributor：Harold Magistrale ; Keith McLaughlin ; Steven Day
- Publisher：Seismological Society of America
- Date：1996-
- Format：text/html
- Language：en
- journal_abbrev：Bulletin of the Seismological Society of America
- issn：0037-1106
- volume：86
- issue：4
- firstpage：1161
- section：Short notes
摘要
Seismic hazard studies of the Los Angeles basin area require a realistic seismic-velocity model. We use geologic information about depth to crystalline basement, depths to sedimentary horizons, uplift of sediments, and surface geology in a velocity-depth-age function to construct a three-dimensional velocity model. In earthquake location tests, the model predicts travel times satisfactorily, and in earthquake ground-motion simulations, the model correctly determines the timing and amplitude of late-arriving waves.