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First arrival traveltime tomography for complex near-surface velocity structures

Abstract : Classical algorithms used for travel time tomography are not necessarily well-suited for handling very large seismic data sets, densely parameterized velocity models and for taking advantage of current supercomputers architecture. We revisit the classical approach of first- arrival travel time tomography by proposing to use a simple gradient-based approach without the need of estimating the inverse of the Hessian of the misfit function. The gradient-based approach is very attractive from a numerical point as it can handle large data sets and velocity models and is very robust with respect to the choice of the initial velocity model.
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Contributor : Herve Chauris Connect in order to contact the contributor
Submitted on : Saturday, November 13, 2010 - 1:43:46 PM
Last modification on : Wednesday, November 17, 2021 - 12:31:16 PM


  • HAL Id : hal-00535843, version 1


Mark S. Noble, Nidhal Belayouni, Hervé Chauris. First arrival traveltime tomography for complex near-surface velocity structures. 71st EAGE Conference and Technical Exhibition, Eur. Ass. of Geoscientists and Engineers, Workshop 10, Jun 2009, Amsterdam, Netherlands. Workshop 10. ⟨hal-00535843⟩



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