 |
Detailed Reference Information |
Berge, C., Gariel, J. and Bernard, P. (1998). A very broad-band stochastic source model used for near source strong motion prediction. Geophysical Research Letters 25: doi: 10.1029/98GL00732. issn: 0094-8276. |
|
The simulation of near-source ground motion requires the calculation of ground motion in a very broad-band frequency range (typically from 10 s to 0.1 s). However, the calculation of complete Green's function is too time consuming for high-frequency simulations. We present a method to obtain very broad-band synthetic seismograms, combining the kinematic spectral source model of Bernard et al., [1996>, and an algorithm, based on the wavenumber technique of Bouchon and Aki, [1977>. High-frequency radiations are evaluated with ray theory and a broad-band dislocation defined on a finely discretized fault plane. The low-frequency radiations due to the near- and intermediate-fields are calculated with the complete field algorithm on a low-wavenumber filtered dislocation. This dislocation is defined on a coarse grid over the fault, hence significantly reducing the computing time. We apply this method to compute the ground motion at a station located near an extended fault, where the near-, intermediate- and far-field radiations are important. ¿ 1998 American Geophysical Union |
|
 |
 |
BACKGROUND DATA FILES |
|
 |
Abstract |
|
 |
|
|
|
Keywords
Seismology, Seismology, Earthquake ground motions and engineering, Seismology, Seismic hazard assessment and prediction, Seismology, Theory and modeling |
|
Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
|
|
 |