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Communication dans un congrès

Refraction travel-time tomography based on adjoint state techniques

Cédric Taillandier 1 Mark Noble 1 Hervé Chauris 1 Pascal Podvin 1 Henri Calandra 2 Jérôme Guilbot 2
1 GEOSCIENCES - Centre de Géosciences
2 CSTJF - TOTAL-Scientific and Technical Center Jean Féger
Abstract : Standard refraction traveltime tomography based on ray tracing techniques has difficulties to handle large datasets that come from current seismic acquisition surveys. To overcome this problem we suggest a refraction tomography method based on adjoint state techniques to derive the gradient of the traveltime misfit function. We use the eikonal equation for the forward modelling, and iterate with a conjugate gradient method. Synthetic examples demonstrate the efficiency and the great potential of the method for 3D applications of refraction tomography.
Keywords : Travel time tomography near subsurface imaging refracted waves diving waves velocity model building
Type de document :
Communication dans un congrès
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00535854
Contributeur : Herve Chauris <>
Soumis le : samedi 13 novembre 2010 - 14:44:57
Dernière modification le : jeudi 24 septembre 2020 - 16:34:06

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  • HAL Id : hal-00535854, version 1

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ENSMP | ENSMP_GEOSCIENCES | PARISTECH | INSTITUT-TELECOM | PSL

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Cédric Taillandier, Mark Noble, Hervé Chauris, Pascal Podvin, Henri Calandra, et al.. Refraction travel-time tomography based on adjoint state techniques. 69th EAGE Conference and Technical Exhibition, Eur. Ass. of Geoscientists and Engineers, Jun 2007, London, United Kingdom. pp.P054. ⟨hal-00535854⟩

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