The failure mode of correlation focusing for model velocity estimation
We analyze the correlation focusing objective functional introduced by van Leeuwen and Mulder to avoid the cycle-skipping problem in full waveform inversion. While some encouraging numerical experiments were reported in the transmission setting, we explain why the method cannot be expected to work f...
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| Other Authors: | |
| Format: | Article |
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Society of Exploration Geophysicists
2018
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| Online Access: | http://hdl.handle.net/1721.1/115495 https://orcid.org/0000-0001-7052-5097 |
| _version_ | 1826207600958504960 |
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| author | Calandra, Henri Demanet, Laurent Baek, Hyoung Su |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Calandra, Henri Demanet, Laurent Baek, Hyoung Su |
| author_sort | Calandra, Henri |
| collection | MIT |
| description | We analyze the correlation focusing objective functional introduced by van Leeuwen and Mulder to avoid the cycle-skipping problem in full waveform inversion. While some encouraging numerical experiments were reported in the transmission setting, we explain why the method cannot be expected to work for general reflection data. We characterize the form that the adjoint source needs to take for model velocity updates to generate a time delay or a time advance. We show that the adjoint source of correlation focusing takes this desired form in the case of a single primary reflection, but not otherwise. Ultimately, failure owes to the specific form of the normalization present in the correlation focusing objective. |
| first_indexed | 2024-09-23T13:52:06Z |
| format | Article |
| id | mit-1721.1/115495 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T13:52:06Z |
| publishDate | 2018 |
| publisher | Society of Exploration Geophysicists |
| record_format | dspace |
| spelling | mit-1721.1/1154952022-10-01T17:39:35Z The failure mode of correlation focusing for model velocity estimation Calandra, Henri Demanet, Laurent Baek, Hyoung Su Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Massachusetts Institute of Technology. Department of Mathematics Demanet, Laurent Baek, Hyoung Su We analyze the correlation focusing objective functional introduced by van Leeuwen and Mulder to avoid the cycle-skipping problem in full waveform inversion. While some encouraging numerical experiments were reported in the transmission setting, we explain why the method cannot be expected to work for general reflection data. We characterize the form that the adjoint source needs to take for model velocity updates to generate a time delay or a time advance. We show that the adjoint source of correlation focusing takes this desired form in the case of a single primary reflection, but not otherwise. Ultimately, failure owes to the specific form of the normalization present in the correlation focusing objective. TOTAL (Firm) 2018-05-18T17:49:35Z 2018-05-18T17:49:35Z 2013 2018-05-17T18:04:02Z Article http://purl.org/eprint/type/ConferencePaper 1949-4645 http://hdl.handle.net/1721.1/115495 Baek, Hyoungsu, Laurent Demanet, and Henri Calandra. “The Failure Mode of Correlation Focusing for Model Velocity Estimation.” SEG Technical Program Expanded Abstracts 2013 (August 19, 2013). https://orcid.org/0000-0001-7052-5097 http://dx.doi.org/10.1190/SEGAM2013-1203.1 SEG Technical Program Expanded Abstracts 2013 Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Society of Exploration Geophysicists MIT Web Domain |
| spellingShingle | Calandra, Henri Demanet, Laurent Baek, Hyoung Su The failure mode of correlation focusing for model velocity estimation |
| title | The failure mode of correlation focusing for model velocity estimation |
| title_full | The failure mode of correlation focusing for model velocity estimation |
| title_fullStr | The failure mode of correlation focusing for model velocity estimation |
| title_full_unstemmed | The failure mode of correlation focusing for model velocity estimation |
| title_short | The failure mode of correlation focusing for model velocity estimation |
| title_sort | failure mode of correlation focusing for model velocity estimation |
| url | http://hdl.handle.net/1721.1/115495 https://orcid.org/0000-0001-7052-5097 |
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