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Reports (Research Report) Year : 1998

Migration-based Traveltime Waveform Inversion of 2D Simple Structures: the Synclay Model

Abstract

A reformulation of the classical least-squares waveform inversion problem is proposed to retrieve the background velocity from surface seismic reflection data. To eliminate the problem of local minima, a change of unknown is performed: the depth reflectivity is replaced by a reflectivity in the time domain through a migration step. The increase in modeling complexity is the price for the enlargement of the attraction domain of the global minimum, which allows for the use of a local optimization method. A numerical implementation with a finite difference acoustic simulator is detailed. Inversion of a non-layered 2D slowness model is performed.
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Dates and versions

inria-00073183 , version 1 (24-05-2006)

Identifiers

  • HAL Id : inria-00073183 , version 1

Cite

Guy Chavent, François Clément, Susana Gómez. Migration-based Traveltime Waveform Inversion of 2D Simple Structures: the Synclay Model. [Research Report] RR-3502, INRIA. 1998. ⟨inria-00073183⟩
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