Registration-Based Guided Least-Squares Waveform Inversion
Full waveform inversion with frequency sweeping cannot start from zero frequency because of the lack of low-frequency data, requiring a good starting model. We study a different iterative scheme where the notion of proximity of two traces is not the usual least-squares distance, but instead involve...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
European Association of Geoscientists & Engineers
2017
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| Online Access: | http://hdl.handle.net/1721.1/109837 https://orcid.org/0000-0001-7052-5097 |
| _version_ | 1826210793801121792 |
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| author | Calandra, Henri Baek, Hyoung Su Demanet, Laurent |
| author2 | Massachusetts Institute of Technology. Department of Mathematics |
| author_facet | Massachusetts Institute of Technology. Department of Mathematics Calandra, Henri Baek, Hyoung Su Demanet, Laurent |
| author_sort | Calandra, Henri |
| collection | MIT |
| description | Full waveform inversion with frequency sweeping cannot start from zero frequency because of the lack of low-frequency data, requiring a good starting model. We study a different iterative scheme where the notion of proximity of two traces is not the usual least-squares distance, but
instead involves registration as in image processing. In order to create transported data, we introduce a nonconvex optimization problem and solve it in a multiscale fashion from low to high frequencies. This process requires defining low-frequency augmented signals in order to seed the frequency sweep at zero frequency. Successful registrations of noisy data, and application of the new method to model velocity estimation are demonstrated. In a crosshole seismic inversion example (transmission setting), we show that the new method decreases the model velocity error
while conventional least-squares inversion converges to a spurious model. |
| first_indexed | 2024-09-23T14:55:48Z |
| format | Article |
| id | mit-1721.1/109837 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:55:48Z |
| publishDate | 2017 |
| publisher | European Association of Geoscientists & Engineers |
| record_format | dspace |
| spelling | mit-1721.1/1098372022-09-29T11:29:38Z Registration-Based Guided Least-Squares Waveform Inversion Calandra, Henri Baek, Hyoung Su Demanet, Laurent Massachusetts Institute of Technology. Department of Mathematics Baek, Hyoung Su Demanet, Laurent Full waveform inversion with frequency sweeping cannot start from zero frequency because of the lack of low-frequency data, requiring a good starting model. We study a different iterative scheme where the notion of proximity of two traces is not the usual least-squares distance, but instead involves registration as in image processing. In order to create transported data, we introduce a nonconvex optimization problem and solve it in a multiscale fashion from low to high frequencies. This process requires defining low-frequency augmented signals in order to seed the frequency sweep at zero frequency. Successful registrations of noisy data, and application of the new method to model velocity estimation are demonstrated. In a crosshole seismic inversion example (transmission setting), we show that the new method decreases the model velocity error while conventional least-squares inversion converges to a spurious model. TOTAL (Firm) 2017-06-13T19:26:26Z 2017-06-13T19:26:26Z 2013-06 Article http://purl.org/eprint/type/ConferencePaper 978-90-73834-48-4 http://hdl.handle.net/1721.1/109837 Baek, Hyoungsu, Henri Calandra and Laurent Demant. "Registration-Based Guided Least-Squares Waveform Inversion." 75th EAGE Conference & Exhibition incorporating SPE EUROPEC 2013, 10 June, 2013, London, United Kingdom, EAGE, 2013. https://orcid.org/0000-0001-7052-5097 en_US http://dx.doi.org/10.3997/2214-4609.20130410 Proceedings of the 75th EAGE Conference & Exhibition SPE EUROPEC 2013 Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf European Association of Geoscientists & Engineers MIT web domain |
| spellingShingle | Calandra, Henri Baek, Hyoung Su Demanet, Laurent Registration-Based Guided Least-Squares Waveform Inversion |
| title | Registration-Based Guided Least-Squares Waveform Inversion |
| title_full | Registration-Based Guided Least-Squares Waveform Inversion |
| title_fullStr | Registration-Based Guided Least-Squares Waveform Inversion |
| title_full_unstemmed | Registration-Based Guided Least-Squares Waveform Inversion |
| title_short | Registration-Based Guided Least-Squares Waveform Inversion |
| title_sort | registration based guided least squares waveform inversion |
| url | http://hdl.handle.net/1721.1/109837 https://orcid.org/0000-0001-7052-5097 |
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