Migration-based Traveltime Waveform Inversion of 2D Simple Structures: the Synclay Model - Inria - Institut national de recherche en sciences et technologies du numérique Accéder directement au contenu
Rapport (Rapport De Recherche) Année : 1998

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

Résumé

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.
Fichier principal
Vignette du fichier
RR-3502.pdf (2.91 Mo) Télécharger le fichier

Dates et versions

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

Identifiants

  • HAL Id : inria-00073183 , version 1

Citer

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⟩
120 Consultations
204 Téléchargements

Partager

Gmail Facebook X LinkedIn More