Zobrazeno 1 - 10 of 16 pro vyhledávání: '"Carlos A N da Costa"'
1
Akademický článek
An objective function for full-waveform inversion based on frequency-dependent offset-preconditioning.
Autor: Sérgio Luiz E F da Silva, Pedro T C Carvalho, Carlos A N da Costa, João M de Araújo, Gilberto Corso
Publikováno v: PLoS ONE, Vol 15, Iss 10, p e0240999 (2020)
Full-waveform inversion (FWI) is a powerful technique to obtain high-resolution subsurface models, from seismic data. However, FWI is an ill-posed problem, which means that the solution is not unique, and therefore the expert use of the information i
Externí odkaz: https://doaj.org/article/46e1efaf05824b27bdad5507070825a4
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2
Akademický článek
Adding Prior Information in FWI through Relative Entropy
Autor: Danilo Santos Cruz, João M. de Araújo, Carlos A. N. da Costa, Carlos C. N. da Silva
Publikováno v: Entropy, Vol 23, Iss 5, p 599 (2021)
Full waveform inversion is an advantageous technique for obtaining high-resolution subsurface information. In the petroleum industry, mainly in reservoir characterisation, it is common to use information from wells as previous information to decrease
Externí odkaz: https://doaj.org/article/0935f1e26bae4d47b2529a5bd2fb1c76
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3
Seismic shot-encoding schemes for waveform inversion
Autor: Ying Rao, Edwin Fagua Duarte, João M. de Araújo, Carlos A. N. da Costa, Yanghua Wang
Publikováno v: Journal of Geophysics and Engineering. 17:906-913
A shot-encoding technique can be used in seismic waveform inversion to significantly reduce the computational cost by reducing the number of seismic simulations in the inversion procedure. Here we developed two alternative shot-encoding schemes to pe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf40fb0915624fa53123ce7aa9a50530
https://doi.org/10.1093/jge/gxaa051
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4
Adding Prior Information in FWI through Relative Entropy
Autor: João M. de Araújo, Danilo Santos Cruz, Carlos A. N. da Costa, Carlos César Nascimento da Silva
Publikováno v: Entropy, Vol 23, Iss 599, p 599 (2021)
Entropy
Volume 23
Issue 5
Full waveform inversion is an advantageous technique for obtaining high-resolution subsurface information. In the petroleum industry, mainly in reservoir characterisation, it is common to use information from wells as previous information to decrease
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b02f259f061d5e7d4acaf372ae2090b
https://www.mdpi.com/1099-4300/23/5/599
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8
An objective function for full-waveform inversion based on frequency-dependent offset-preconditioning
Autor: Pedro T. C. Carvalho, João M. de Araújo, Sérgio Luiz E. F. da Silva, Carlos A. N. da Costa, Gilberto Corso
Publikováno v: PLoS ONE, Vol 15, Iss 10, p e0240999 (2020)
PLoS ONE
Full-waveform inversion (FWI) is a powerful technique to obtain high-resolution subsurface models, from seismic data. However, FWI is an ill-posed problem, which means that the solution is not unique, and therefore the expert use of the information i
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ad7f267ef8e230cd71616b6836272a5
https://doi.org/10.1371/journal.pone.0240999
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9
Robust full-waveform inversion using q-statistics
Autor: João M. de Araújo, Pedro Carvalho, Liacir S. Lucena, Carlos A. N. da Costa, Gilberto Corso, Sérgio Luiz E. F. da Silva
Publikováno v: Physica A: Statistical Mechanics and its Applications. 548:124473
Imaging of the subsurface is central in seismic exploration and a topic of great economic interest. A promising technique for seismic imaging is a wave-equation-based method called full-waveform inversion (FWI). FWI is a data-fitting technique that m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b17ec6c63eb038bd37e3535fae110136
https://doi.org/10.1016/j.physa.2020.124473
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10
Iterative methods for 3D implicit finite-difference migration using the complex Padé approximation
Autor: Carlos A. N. da Costa, Francisco A. Silva Netoé, Jessé C. Costa, Itamara S. Campos, Jörg Schleicher, Amélia Novais
Publikováno v: Journal of Geophysics and Engineering. 10:045011
Conventional implementations of 3D finite-difference (FD) migration use splitting techniques to accelerate performance and save computational cost. However, such techniques are plagued with numerical anisotropy that jeopardises the correct positionin
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46a49619a5d6d67f9541bb87de039374
https://doi.org/10.1088/1742-2132/10/4/045011
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