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http://hdl.handle.net/2122/1429
Authors: | Tselentis, G. A.* Delis, G.* |
Title: | Rapid assessment of S-wave profiles from the inversion of multichannel | Issue Date: | Apr-1998 | Series/Report no.: | 1/41 (1998) | URI: | http://hdl.handle.net/2122/1429 | Keywords: | Rayleigh waves shear wave profiles site effect microzonation |
Subject Classification: | 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis 05. General::05.04. Instrumentation and techniques of general interest::05.04.99. General or miscellaneous |
Abstract: | The importance of detailed knowledge of the shear-wave velocity structure of the upper geological layers was recently stressed in strong motion studies. In this work we describe an algorithm which we have developed to infer the 1D shear wave velocity structure from the inversion of multichannel surface wave dispersion data (ground-roll). Phase velocities are derived from wavenumber-frequency stacks while the inversion process is speeded up by the use of Householder transformations. Using synthetic and experimental data, we examined the applicability of the technique in deducing S-wave profiles. The comparison of the obtained results with those derived from cross-hole measurements and synthesized wave fields proved the reliability of the technique for the rapid assessment of shear wave profiles during microzonation investigations. |
Appears in Collections: | Annals of Geophysics |
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01 tselentis.pdf | 3.38 MB | Adobe PDF | View/Open |
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