Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Ludovic Métivier"'
Publikováno v:
GEOPHYSICS. 88:U49-U70
Full-waveform inversion (FWI) aims at a broadband reconstruction of the subsurface physical properties by fitting the entire recorded wavefield. In realistic exploration seismic surveys, however, conventional FWI often fails to retrieve the deep velo
Publikováno v:
Geophysical Journal International. 233:1055-1080
SUMMARY Correctly interpreting phase events thanks to data processing techniques based on correlation or deconvolution has been the focus of numerous studies in the field of high-resolution seismic imaging using full-waveform inversion. To mitigate t
Publikováno v:
Geophysical Journal International.
Summary Recently, we have developed a localized adaptive waveform inversion (LAWI) method to tackle the cycle-skipping issue in velocity reconstruction through seismic waveform inversion. The LAWI method employs a local matching filter, computed usin
Harmaliére, in southern France, is among the most active alpine landslides, posing a risk to the neighbouring settlements and infrastructures. A retrogressive slide in March 1981, that displaced a volume in the order of 100 m 3 , was followed in Apr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::070fd952ad3fa826896c9c28eeaf615d
https://doi.org/10.5194/egusphere-egu23-8048
https://doi.org/10.5194/egusphere-egu23-8048
Regional-scale active seismic surveys are the methods of choice to probe the lithosphere. One of the key parameters of these surveys is the spatial sampling of the investigated area. Dense sources and receivers sampling coupled with broadband frequen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90579ac3929541f776c17c7da7ffa859
https://doi.org/10.5194/egusphere-egu23-4387
https://doi.org/10.5194/egusphere-egu23-4387
Autor:
Ludovic Métivier, Romain Brossier
Publikováno v:
Geophysics
Geophysics, 2021, pp.1-85. ⟨10.1190/geo2020-0922.1⟩
Geophysics, Society of Exploration Geophysicists, 2021, pp.1-85. ⟨10.1190/geo2020-0922.1⟩
Geophysics, 2021, pp.1-85. ⟨10.1190/geo2020-0922.1⟩
Geophysics, Society of Exploration Geophysicists, 2021, pp.1-85. ⟨10.1190/geo2020-0922.1⟩
International audience; A receiver-extension strategy is presented as an alternative to recently promoted source-extension strategies, in the framework of high resolution seismic imaging by full waveform inversion. This receiver-extension strategy is
Publikováno v:
Acta Geologica Sinica - English Edition. 95:11-14
Publikováno v:
Geophysics
Geophysics, Society of Exploration Geophysicists, 2021, 86 (4), pp.R563-R587. ⟨10.1190/geo2020-0851.1⟩
Geophysics, 2021, 86 (4), pp.R563-R587. ⟨10.1190/geo2020-0851.1⟩
Geophysics, Society of Exploration Geophysicists, 2021, 86 (4), pp.R563-R587. ⟨10.1190/geo2020-0851.1⟩
Geophysics, 2021, 86 (4), pp.R563-R587. ⟨10.1190/geo2020-0851.1⟩
International audience; Full waveform inversion, a high-resolution seismic imaging method, is known to require sufficiently accurate initial models to converge toward meaningful estimations of the subsurface mechanical properties. This limitation is
Publikováno v:
GEOPHYSICS. 86:B15-B35
Full-waveform inversion (FWI) applications on 3D ocean-bottom cable (OBC) data from the Valhall oil field in the North Sea have demonstrated the importance of appropriately accounting for attenuation. The Valhall field contains unconsolidated shallow
Publikováno v:
Geophysical Journal International
Geophysical Journal International, 2022, 229 (1), pp.671-703. ⟨10.1093/gji/ggab484⟩
Geophysical Journal International, 2022, 229 (1), pp.671-703. ⟨10.1093/gji/ggab484⟩
SUMMARYOcean-bottom seismic acquisition systems deployed on the seabed give access to three-component geophone data and hydrophone data. Compared with conventional streamer acquisitions, the separation of sources and receivers makes it possible to in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb7e77865f6007291b525fadfc231279
https://hal.science/hal-03740871/document
https://hal.science/hal-03740871/document