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Communication Dans Un Congrès Année : 2014

Near-surface Full Waveform Inversion Using Surface Waves and Reflected Waves

Résumé

We investigate the capacity of extracting near-surface shear-wave velocity by considering dispersive surface waves and non-dispersive reflected waves. We show that indeed the full waveform fitting of these waves requires a dedicated approach by using lateral spatial and frequential coherence for surface waves and by explicitely introduces the fitting of reflected waves in the inversion formulation. On a simple example as a two-layers model, lateral variations of the velocity are reconstructed while the low-wavenumber content of the velocity could be improved through reflection waves. Combining these two sources of information on the shear-wave velocity could improve our shear-wave velocity imaging in the near-surface context.
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Dates et versions

hal-01887705 , version 1 (04-10-2018)

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Isabella Masoni, Wei Zhou, Romain Brossier, Ludovic Métivier, Stéphane Operto, et al.. Near-surface Full Waveform Inversion Using Surface Waves and Reflected Waves. 76th EAGE Conference and Exhibition - Workshops, Jun 2014, Amsterdam, Netherlands. ⟨10.3997/2214-4609.20140531⟩. ⟨hal-01887705⟩
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