SIGMA Consortium
Seismic Inversion, Geophysical Modeling and Applications

Automated Waveform Inversion

• Migration-based traveltime formulation to recover:
  background velocity, migrated section, geometry of acquisition device, source wavelet, topography, WZ effects...
• Migration velocity analysis
• Uncertainty estimation
• Noise level influence

Precision Modeling

• Parallel higher order finite elements with mass lumping
• Fictitious domains for topography
• Biot model for propagation in porous media

Low Cost Modeling

• Multivalued finite-difference solutions of the Eikonal equation
• Paraxial equations for elastodynamics

Contacts

Guy.Chavent-at-inria-dot-fr
Francois.Clement-at-inria-dot-fr
Jean.Roberts-at-inria-dot-fr
Yann.Herve.De.Roeck-at-ifremer-dot-fr

URL: http://www-roc.inria.fr/who/Francois.Clement/sigma
Author: François Clément
Creation date: October 18th, 1997
Last modification date: November 12th, 1998

Institut National de Recherche en Informatique et en Automatique
© 1997, 1998 INRIA, François Clément