The inversion of surface wave dispersion curves is a well-established investigation approach to provide S-wave velocity models. Recent works have shown the possibility of exploiting the relation between surface wave wavelength and investigation depth to estimate directly the time-average S-wave velocity along a line or over an area. Moreover, the same relation is sensitive to Poisson’s ratio and can be therefore used to retrieve also the time-average P-wave velocity model. Here we show that, starting from the estimated time average VS and VP models and using a Dix-like formula, we can estimate local VS and VP models. We use a synthetic 1D example to outline the method and then we show the results on a field dataset.

P- and S-wave velocity models from surface wave dispersion curves data transform / Socco, Laura; Comina, Cesare. - ELETTRONICO. - (2017), pp. 5197-5201. (Intervento presentato al convegno SEG Annual Conference and Technical Exhibition tenutosi a Houston (USA) nel Settembre 2017) [10.1190/segam2017-17734559.1].

P- and S-wave velocity models from surface wave dispersion curves data transform

SOCCO, LAURA;Comina, Cesare
2017

Abstract

The inversion of surface wave dispersion curves is a well-established investigation approach to provide S-wave velocity models. Recent works have shown the possibility of exploiting the relation between surface wave wavelength and investigation depth to estimate directly the time-average S-wave velocity along a line or over an area. Moreover, the same relation is sensitive to Poisson’s ratio and can be therefore used to retrieve also the time-average P-wave velocity model. Here we show that, starting from the estimated time average VS and VP models and using a Dix-like formula, we can estimate local VS and VP models. We use a synthetic 1D example to outline the method and then we show the results on a field dataset.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2687836
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