3D frequency-domain seismic modeling with a Block Low-Rank algebraic multifrontal direct solver

Abstract : Three-dimensional frequency-domain full waveform inversion of fixed-spread data can be efficiently performed in the viscoacoustic approximation when seismic modeling is based on a sparse direct solver. We present a new algebraic Block Low- Rank (BLR) multifrontal solver which provides an approximate solution of the time-harmonic wave equation with a reduced operation count, memory demand and volume of communication relative to the full-rank solver. We show some preliminary simulations in the 3D SEG/EAGE overthrust model, that give some insights on the memory and time complexities of the low-rank solver for frequencies of interest in fullwaveform inversion (FWI) applications.
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Communication dans un congrès
SEG Technical Program Expanded Abstracts, SEG annual meeting, Houston, TX, USA, 2013, Houston, Texas, United States. 2013, 〈10.1190/segam2013-0603.1〉
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https://hal.inria.fr/hal-00924638
Contributeur : Jean-Yves L'Excellent <>
Soumis le : mardi 7 janvier 2014 - 09:21:54
Dernière modification le : vendredi 20 avril 2018 - 15:44:26

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Clement Weisbecker, Patrick R. Amestoy, Olivier Boiteau, Romain Brossier, Alfredo Buttari, et al.. 3D frequency-domain seismic modeling with a Block Low-Rank algebraic multifrontal direct solver. SEG Technical Program Expanded Abstracts, SEG annual meeting, Houston, TX, USA, 2013, Houston, Texas, United States. 2013, 〈10.1190/segam2013-0603.1〉. 〈hal-00924638〉

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