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Stephen Park and Scott Elrick
Predictions of shear-wave velocities in southern California using surface geology
Bulletin of the Seismological Society of America (June 1998), 88(3):677-685
Abstract: Index Terms/Descriptors: Latitude & Longitude:
GeoRef, Copyright 2004, American Geological Institute.
A new model of the average shear-wave velocity in the uppermost 30 m has been generated by extrapolation of discrete velocity profiles using surface geology at several scales. Statistical methods have been applied to create a a map that is no more complicated than is supported by the velocity data; several geologic units with similar responses are grouped together. The resulting map is simpler than previous ones and yet fits the observed velocity profiles better than earlier, more complicated maps. Analysis within a geographic information system will permit updates and modification of the map as new velocity data are added.
body waves; California; earthquakes; elastic waves; ground motion; Los Angeles Basin; models; prediction; S-waves; seismic waves; Southern California; statistical analysis; strong motion; United States; velocity structure
N32°30'00" -
N42°00'00" and
W124°30'00" -
W114°15'00" (Search for maps and images at Alexandria Digital Library)