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pro vyhledávání: '"Edwin Fagua Duarte"'
Autor:
Edwin Fagua Duarte, Danyelle da Silva, Pedro Tiago Carvalho, João Medeiros de Araújo, Jorge L Lopez
Publikováno v:
GEOPHYSICS. :1-56
We have designed a workflow to apply full-waveform inversion (FWI) to a new type of acquisition recorded on ocean-bottom nodes (OBNs) in the Brazilian presalt area. The data set consists of three large-radius concentric circles of seismic source poin
Autor:
J. M. de Araújo, Gilberto Corso, Pedro T. C. Carvalho, Romain Brossier, S L E F da Silva, Edwin Fagua Duarte
Publikováno v:
Geophysical Journal International. 229:35-55
SUMMARY In an attempt to overcome the difficulties of the full waveform inversion (FWI), several alternative objective functions have been proposed over the last few years. Many of them are based on the assumption that the residuals (differences betw
Autor:
Mauro S. Ferreira, João M. de Araújo, Danyelle da Silva, Wagner Almeida, Edwin Fagua Duarte, Francisco A Moura
Publikováno v:
GEOPHYSICS. 86:R811-R823
We have designed a target-oriented methodology to perform full-waveform inversion (FWI) using a frequency-domain wave propagator based on the so-called patched Green’s function (PGF) technique. Originally developed in condensed matter physics to de
Autor:
Mauro S. Ferreira, Liacir S. Lucena, Danyelle P Silva, Edwin Fagua Duarte, Wagner de Almeida Barbosa, Francisco A Moura, João M. de Araújo
Publikováno v:
Journal of Geophysics and Engineering. 17:914-922
Modern visualization can be formulated as inversion problems that aim to obtain structural information about a complex medium through wave excitations. However, without numerically efficient forward calculations, even state-of-the-art inversion proce
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
Publikováno v:
SEG Technical Program Expanded Abstracts 2019.
Autor:
Williams A. Lima, Carlos A. N. da Costa, Edwin Fagua Duarte, Sérgio Luiz E. F. da Silva, Raphael C. L. Rêgo, João M. de Araújo
Publikováno v:
SEG Technical Program Expanded Abstracts 2019.
Publikováno v:
Proceedings of the 16th International Congress of the Brazilian Geophysical Society&Expogef.