Zobrazeno 1 - 10
of 227
pro vyhledávání: '"William W Symes"'
Publikováno v:
Second International Meeting for Applied Geoscience & Energy.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ade39c1a6ee96dc5a2515b741ae3e7f9
https://doi.org/10.1190/image2022-3749692.1
https://doi.org/10.1190/image2022-3749692.1
Study of a simple single-trace transmission example shows how an extended source formulation of full-waveform inversion can produce an optimization problem without spurious local minima ("cycle skipping"), hence efficiently solvable via Newton-like l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8efc013f3268538e2f228d243389cb0f
Publikováno v:
SEG Technical Program Expanded Abstracts 2020.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7c4cd2370b9c230788d86d9e6defea6
https://doi.org/10.1190/segam2020-3424509.1
https://doi.org/10.1190/segam2020-3424509.1
Autor:
William W. Symes
Nonlinear least squares data-fitting driven by physical process simulation is a classic and widely successful technique for the solution of inverse problems in science and engineering. Known as "Full Waveform Inversion" in application to seismology,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab329dbaee3674f0086879c8c69f038f
Autor:
Raanan Dafni, William W. Symes
Publikováno v:
Geophysical Journal International. 216:1025-1042
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a181fdebf9a1371b96233467759884c
https://doi.org/10.1093/gji/ggy478
https://doi.org/10.1093/gji/ggy478
Publikováno v:
GEOPHYSICS. 83:R369-R387
Full-waveform inversion (FWI) faces the persistent challenge of cycle skipping, which can result in stagnation of the iterative methods at uninformative models with poor data fit. Extended reformulations of FWI avoid cycle skipping through adding aux
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25c3300198625baea6a59bcb4cd2bbab
https://doi.org/10.1190/geo2017-0330.1
https://doi.org/10.1190/geo2017-0330.1
Publikováno v:
GEOPHYSICS. 83:R449-R461
Source signature estimation from seismic data is a crucial ingredient for successful application of seismic migration and full-waveform inversion (FWI). If the starting velocity deviates from the target velocity, FWI method with on-the-fly source est
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::679903ed0e3e82fb4e8d029e37b7ee68
https://doi.org/10.1190/geo2017-0333.1
https://doi.org/10.1190/geo2017-0333.1
Autor:
William W. Symes, Jie Hou
Publikováno v:
GEOPHYSICS. 83:R189-R200
Optimization-based migration velocity analysis updates long-wavelength velocity information by minimizing an objective function that measures the violation of a focusing criterion, applied to an image volume. Differential semblance optimization forms
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4930f10ae062e33f6ebe2977e25a525c
https://doi.org/10.1190/geo2017-0059.1
https://doi.org/10.1190/geo2017-0059.1
Autor:
Raanan Dafni, William W. Symes
Publikováno v:
Geophysical Journal International. 213:1212-1230
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4778def2f2b26588feebf8492d953fe4
https://doi.org/10.1093/gji/ggy051
https://doi.org/10.1093/gji/ggy051
Autor:
Rami Nammour, William W. Symes
Publikováno v:
International Journal of Geophysics, Vol 2011 (2011)
Linearized multiparameter inversion is a model-driven variant of amplitude-versus-offset analysis, which seeks to separately account for the influences of several model parameters on the seismic response. Previous approaches to this class of problems
Externí odkaz:
https://doaj.org/article/5d7153fdf3924d9c832c085c65126180