Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Jessé C Costa"'
Publikováno v:
GEOPHYSICS. 88:S1-S16
The inverse-scattering imaging condition (ISIC) for reverse time migration (RTM) aims at recovering amplitudes proportional to seismic reflectivity. It has been derived as the high-frequency asymptotic inverse of Born modeling, which justifies its be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c570277db3e313050a9410e57ff9a796
https://doi.org/10.1190/geo2021-0698.1
https://doi.org/10.1190/geo2021-0698.1
Autor:
Ana Paula O. Muller, Jessé C. Costa, Clecio R. Bom, Elisangela L. Faria, Matheus Klatt, Gabriel Teixeira, Marcelo P. de Albuquerque, Marcio P. de Albuquerque
Publikováno v:
GEOPHYSICS. 87:R453-R463
Delimiting salt inclusions from migrated images is a time-consuming activity that relies on highly human-curated analysis and is subject to interpretation errors or limitations of the methods available. We propose to use migrated images produced from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0aadf7a5aa5ac978c1317de9943be00f
https://doi.org/10.1190/geo2021-0586.1
https://doi.org/10.1190/geo2021-0586.1
Autor:
Ana P O Muller, Clecio R Bom, Jessé C Costa, Matheus Klatt, Elisangela L Faria, Bruno dos Santos Silva, Marcelo P de Albuquerque, Marcio P de Albuquerque
Publikováno v:
Geophysical Journal International. 232:975-989
The accurate and fast estimation of velocity models is crucial in seismic imaging. Conventional methods, like Tomography and Full-Waveform Inversion (FWI), obtain appropriate velocity models; however, they require intense and specialized human superv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4b9488c1b94508955804e0579018027
https://doi.org/10.1093/gji/ggac374
https://doi.org/10.1093/gji/ggac374
Autor:
Ana P O Muller, Jessé C Costa, Clecio R Bom, Matheus Klatt, Elisangela L Faria, Marcelo P de Albuquerque, Marcio P de Albuquerque
Publikováno v:
Geophysical Journal International.
Summary Full-Waveform Inversion (FWI) is the current standard method to determine final and detailed model parameters to be used in the seismic imaging process. However, FWI is an ill-posed problem that easily achieves a local minimum, leading the mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2da9a647820e937e0e01abb4909637d
https://doi.org/10.1093/gji/ggad215
https://doi.org/10.1093/gji/ggad215
Autor:
Alex T. Oliveira, Renato R. S. Dantas, Walter E. Medeiros, Jessé C. Costa, Victória F. Amaral
Publikováno v:
Pure and Applied Geophysics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2482d36da8d63b9c5b7bcc59279de08
https://doi.org/10.1007/s00024-023-03287-x
https://doi.org/10.1007/s00024-023-03287-x
Publikováno v:
GEOPHYSICS. 86:T337-T348
We have developed a procedure to derive low-rank evolution operators in the mixed space-wavenumber domain for modeling the qP Born-scattered wavefield at perturbations of an anisotropic medium under the pseudoacoustic approximation. To approximate th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14022754d72c441bade17b7979b94329
https://doi.org/10.1190/geo2020-0764.1
https://doi.org/10.1190/geo2020-0764.1
Publikováno v:
GEOPHYSICS. 84:R539-R551
Most of the approaches designed to avoid cycle skipping in full-waveform inversion (FWI) involve calculating a sequence of inversions in a multiscale fashion. We have adopted an alternative strategy, which is inverting a sequence of different misfit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa64b24c6541407b97fe373b6d286eed
https://doi.org/10.1190/geo2018-0291.1
https://doi.org/10.1190/geo2018-0291.1
Publikováno v:
GEOPHYSICS. 84:IM19-IM33
We have developed a new and robust method (in the sense of it being applicable to a wide range of situations) to estimate the regularization parameter [Formula: see text] in a regularized inverse problem. For each tentative value of [Formula: see tex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1533d687205be298445f3f5dd901ea68
https://doi.org/10.1190/geo2017-0781.1
https://doi.org/10.1190/geo2017-0781.1
Autor:
Alok K. Soni, Carlos A.N. da Costa, Jessé C. Costa, D.J. Verschuur, Walter Eugênio de Medeiros
Publikováno v:
Geophysical Prospecting. 67:69-84
Nowadays, full-waveform inversion, based on fitting the measured surface data with modelled data, has become the preferred approach to recover detailed physical parameters from the subsurface. However, its application is computationally expensive for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f59d348a3d332ff2819407e57a67d384
https://doi.org/10.1111/1365-2478.12703
https://doi.org/10.1111/1365-2478.12703
Autor:
Jessé C. Costa, Jörg Schleicher, Martin Schimmel, Walter E. Medeiros, Flavio Lemos de Santana
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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instname
Additional information regarding the continuity and resolution of selected seismic reflectors in reverse time migration (RTM) images can be beneficial for seismic interpretation. We have developed and evaluated new imaging conditions for RTM based on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2da3c116f25f1ef3a1d79be5229fdac1
https://doi.org/10.1190/geo2017-0791.1
https://doi.org/10.1190/geo2017-0791.1