مؤتمر
Efficient 3D frequency-domain full-waveform inversion of ocean-bottom cable data with sparse block low-rank direct solver: a real data case study from the North Sea
| العنوان: | Efficient 3D frequency-domain full-waveform inversion of ocean-bottom cable data with sparse block low-rank direct solver: a real data case study from the North Sea |
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| المؤلفون: | Amestoy, Patrick, Brossier, Romain, Buttari, Alfredo, L'Excellent, Jean-Yves, Mary, Théo, Métivier, Ludovic, Miniussi, Alain, Operto, Stéphane, Ribodetti, Alessandra, Virieux, Jean, Weisbecker, Clément |
| المساهمون: | Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux - IFSTTAR (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut National de la Recherche en Informatique et en Automatique - INRIA (FRANCE), Institut de Recherche pour le Développement - IRD (FRANCE), Université Nice Sophia Antipolis (FRANCE), Observatoire de la Côte d'Azur (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), Université Joseph Fourier Grenoble 1 - UJF (FRANCE), Université de Savoie Mont Blanc - USMB (FRANCE) |
| بيانات النشر: | Society of Exploration Geophysicists |
| سنة النشر: | 2015 |
| المجموعة: | OATAO (Open Archive Toulouse Archive Ouverte - Université de Toulouse) |
| مصطلحات موضوعية: | Calcul parallèle, distribué et partagé, Frequency-domain, Wave propagation, OBC, Modeling, Full-waveform inversion |
| الوصف: | We present an application of 3D frequency-domain full waveform inversion (FWI) on ocean-bottom cable data from the North Sea. Frequency-domain seismic modeling is performed in the visco-acoustic VTI approximation with a sparse direct solver based on the multifrontal method. The computational cost of the multifrontal LU factorization is efficiently reduced with a block-low rank (BLR) approximation of the dense frontal matrices. A multiscale frequency-domain FWI is applied by successive inversions of 11 discrete frequencies in the 3.5Hz-10Hz frequency band. The velocity model built by FWI reveals short-scale features such as channels, scrapes left by drifting icebergs on the paleo-seafloor, fractures and deep reflectors below the reservoir level, although the presence of gas in the overburden. The quality of the FWI results is controlled by time-domain modeling and source wavelet estimation. Next step is the application of multi-parameter FWI with second-order optimization algorithms, which can be efficiently implemented with our frequency-domain modeling engine. |
| نوع الوثيقة: | conference object |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | https://oatao.univ-toulouse.fr/16937/1/amestoy_16937.pdfTest; Amestoy, Patrick and Brossier, Romain and Buttari, Alfredo and L'Excellent, Jean-Yves and Mary, Théo and Métivier, Ludovic and Miniussi, Alain and Operto, Stéphane and Ribodetti, Alessandra and Virieux, Jean and Weisbecker, Clément. Efficient 3D frequency-domain full-waveform inversion of ocean-bottom cable data with sparse block low-rank direct solver: a real data case study from the North Sea. (2015) In: Society of Exploration Geophysicists annual meeting (SEG 2015), 18 October 2015 - 23 October 2015 (New Orleans, United States). |
| DOI: | 10.1190/segam2015-5713962.1 |
| الإتاحة: | https://doi.org/10.1190/segam2015-5713962.1Test https://oatao.univ-toulouse.fr/16937Test/ https://oatao.univ-toulouse.fr/16937/1/amestoy_16937.pdfTest |
| حقوق: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.9A7FBB9 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1190/segam2015-5713962.1 |
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