Multi-parameter full waveform inversion using Poisson

Handle URI:
http://hdl.handle.net/10754/626648
Title:
Multi-parameter full waveform inversion using Poisson
Authors:
Oh, Juwon; Min, Dong-Joo
Abstract:
In multi-parameter full waveform inversion (FWI), the success of recovering each parameter is dependent on characteristics of the partial derivative wavefields (or virtual sources), which differ according to parameterisation. Elastic FWIs based on the two conventional parameterisations (one uses Lame constants and density; the other employs P- and S-wave velocities and density) have low resolution of gradients for P-wave velocities (or ). Limitations occur because the virtual sources for P-wave velocity or (one of the Lame constants) are related only to P-P diffracted waves, and generate isotropic explosions, which reduce the spatial resolution of the FWI for these parameters. To increase the spatial resolution, we propose a new parameterisation using P-wave velocity, Poisson's ratio, and density for frequency-domain multi-parameter FWI for isotropic elastic media. By introducing Poisson's ratio instead of S-wave velocity, the virtual source for the P-wave velocity generates P-S and S-S diffracted waves as well as P-P diffracted waves in the partial derivative wavefields for the P-wave velocity. Numerical examples of the cross-triangle-square (CTS) model indicate that the new parameterisation provides highly resolved descent directions for the P-wave velocity. Numerical examples of noise-free and noisy data synthesised for the elastic Marmousi-II model support the fact that the new parameterisation is more robust for noise than the two conventional parameterisations.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Oh J-W, Min D-J (2016) Multi-parameter full waveform inversion using Poisson. Exploration Geophysics. Available: http://dx.doi.org/10.1071/EG16063.
Publisher:
CSIRO Publishing
Journal:
Exploration Geophysics
Issue Date:
21-Jul-2016
DOI:
10.1071/EG16063
Type:
Article
ISSN:
0812-3985
Sponsors:
This work was supported by the Human Resources Development program (No. 20134010200510) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Ministry of Trade, Industry and Energy and the "Development of Technology for CO<INF>2</INF> Marine Geological Storage' program funded by the Ministry of Oceans and Fisheries of Korea.
Additional Links:
http://www.publish.csiro.au/eg/EG16063
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorOh, Juwonen
dc.contributor.authorMin, Dong-Jooen
dc.date.accessioned2018-01-01T12:19:05Z-
dc.date.available2018-01-01T12:19:05Z-
dc.date.issued2016-07-21en
dc.identifier.citationOh J-W, Min D-J (2016) Multi-parameter full waveform inversion using Poisson. Exploration Geophysics. Available: http://dx.doi.org/10.1071/EG16063.en
dc.identifier.issn0812-3985en
dc.identifier.doi10.1071/EG16063en
dc.identifier.urihttp://hdl.handle.net/10754/626648-
dc.description.abstractIn multi-parameter full waveform inversion (FWI), the success of recovering each parameter is dependent on characteristics of the partial derivative wavefields (or virtual sources), which differ according to parameterisation. Elastic FWIs based on the two conventional parameterisations (one uses Lame constants and density; the other employs P- and S-wave velocities and density) have low resolution of gradients for P-wave velocities (or ). Limitations occur because the virtual sources for P-wave velocity or (one of the Lame constants) are related only to P-P diffracted waves, and generate isotropic explosions, which reduce the spatial resolution of the FWI for these parameters. To increase the spatial resolution, we propose a new parameterisation using P-wave velocity, Poisson's ratio, and density for frequency-domain multi-parameter FWI for isotropic elastic media. By introducing Poisson's ratio instead of S-wave velocity, the virtual source for the P-wave velocity generates P-S and S-S diffracted waves as well as P-P diffracted waves in the partial derivative wavefields for the P-wave velocity. Numerical examples of the cross-triangle-square (CTS) model indicate that the new parameterisation provides highly resolved descent directions for the P-wave velocity. Numerical examples of noise-free and noisy data synthesised for the elastic Marmousi-II model support the fact that the new parameterisation is more robust for noise than the two conventional parameterisations.en
dc.description.sponsorshipThis work was supported by the Human Resources Development program (No. 20134010200510) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Ministry of Trade, Industry and Energy and the "Development of Technology for CO<INF>2</INF> Marine Geological Storage' program funded by the Ministry of Oceans and Fisheries of Korea.en
dc.publisherCSIRO Publishingen
dc.relation.urlhttp://www.publish.csiro.au/eg/EG16063en
dc.subjectelastic mediaen
dc.subjectfrequency domainen
dc.subjectfull waveform inversionen
dc.subjectmulti-parameteren
dc.subjectparameterisationen
dc.subjectPoisson's ratioen
dc.subjectvirtual sourceen
dc.titleMulti-parameter full waveform inversion using Poissonen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalExploration Geophysicsen
dc.contributor.institutionDepartment of Energy Systems Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Koreaen
kaust.authorOh, Juwonen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.