Estimation of the P-wave velocity profile of elastic real data based on surface wave inversion

A.V. Ponomarenko, B.M. Kashtan, V.N. Troyan, W.A. Mulder

Research output

2 Citations (Scopus)

Abstract

Recently, we proposed an analytical approach to invert for a smoothly varying near-surface P-wave velocity profile that has a squared slowness linearly decreasing with depth. The exact solution for such a velocity profile in the acoustic approximation can be expressed in terms of Airy functions and leads to a dispersion equation. The method was successfully applied to synthetic elastic data with small Vs/Vp-ratio. Here, we apply the method to land data. The result agrees with that of multi-layered inversion, confirming its potential to provide an initial P-wave velocity model for acoustic full waveform inversion. Compared to multi-layered inversion, the method is simpler to use and produces a smooth model characterized by three parameters. In some cases, having a smooth rather than a blocky initial model for full waveform inversion is more appropriate.
Original languageEnglish
Title of host publicationNear Surface Geoscience 2013. 19th European Meeting of Environmental and Engineering Geophysics of the Near Surface Geoscience Division of EAGE, Near Surface Geoscience 2013; Bochum; Germany; 9 September 2013 through 11 September 2013;
PagesCode 104173
Publication statusPublished - 2013

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