3-D refraction traveltime tomography algorithm based on adjoint state techniques

Abstract : Classical 3-D refraction traveltime tomography algorithms may suffer from computational limitations due to the large datasets that come from current seismic acquisition surveys. To overcome these issues, we suggest a 3-D refraction tomography algorithm 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. A 3-D synthetic example with a realistic size acquisition demonstrates the efficiency and the great potential of the adjoint state method for 3-D applications of refraction tomography.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00535846
Contributeur : Herve Chauris <>
Soumis le : samedi 13 novembre 2010 - 14:17:43
Dernière modification le : lundi 12 novembre 2018 - 10:55:31

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  • HAL Id : hal-00535846, version 1

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Cédric Taillandier, Mark Noble, Henri Calandra, Hervé Chauris, Pascal Podvin. 3-D refraction traveltime tomography algorithm based on adjoint state techniques. 70th EAGE Conference and Technical Exhibition, Eur. Ass. of Geoscientists and Engineers, Jun 2008, Rome, Italy. pp.P163. ⟨hal-00535846⟩

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