Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Børge Arntsen"'
Ocean Bottom Seismometers (OBS), in conjunction with an active source, have for a longtime been used to investigate the crust and upper mantle. Conventionally a number of Seismometers are deployed along a line with relatively large separation (severa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77e67daaa563735de3bc7db432476b14
https://doi.org/10.5194/egusphere-egu23-8657
https://doi.org/10.5194/egusphere-egu23-8657
Traveltime tomography is applied to investigate seismic structures of the Earth's subsurface. An accurate tomographic velocity model is important for a high-resolution waveform velocity building and its availability is one of the main components to m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c670997b0379b3a7668a7736b80f425c
https://doi.org/10.5194/egusphere-egu23-6505
https://doi.org/10.5194/egusphere-egu23-6505
Publikováno v:
The Journal of Supercomputing. 77:2416-2457
Full waveform inversion (FWI) is a procedure used to determine the elastic parameters of the Earth by reducing the misfit between observed elastodynamic wavefields and their numerically modelled counterparts. The numerical solution of the elastodynam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83f6b71c0a7c92c7aa515b3aae19724e
https://doi.org/10.1007/s11227-020-03352-5
https://doi.org/10.1007/s11227-020-03352-5
Publikováno v:
Geophysical Journal International
Gradient computations in full-waveform inversion (FWI) require calculating zero-lag cross-correlations of two wavefields propagating in opposite temporal directions. Lossless media permit accurate and efficient reconstruction of the incident field fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab4ac5b0e1d4ec539a5247d36ffda19c
https://doi.org/10.1093/gji/ggaa147
https://doi.org/10.1093/gji/ggaa147
Publikováno v:
GEOPHYSICS. 84:R341-R353
Multicomponent seismic data acquisition can reveal more information about geologic structures and rock properties than single component acquisition. Full elastic wave seismic imaging, which uses multicomponent seismic to its full potential, is promis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94d089fa2b40c9045ad2081e82eee26a
https://doi.org/10.1190/geo2018-0181.1
https://doi.org/10.1190/geo2018-0181.1
Publikováno v:
International Journal of Greenhouse Gas Control
A detailed time lapse seismic analysis of subsurface movements is presented using seismic 2D lines acquired prior to and after the Tohoku-Oki earthquake offshore Japan in 2011. Estimated movements of the seabed from the time lapse seismic data corres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a43bcf3ed68ff5a40cb6c52e36abd61d
https://doi.org/10.1016/j.ijggc.2019.01.002
https://doi.org/10.1016/j.ijggc.2019.01.002
Autor:
Ståle Johansen, Rune Mittet, Martin Panzner, Eirik Vik, Børge Arntsen, Anna Lim, Hans E. F. Amundsen, Martin Landrø
A detailed 120 km deep electromagnetic joint inversion model for the ultra-slow Mohns Ridge was constructed combining controlled source- and magnetotelluric data. About one third of mid-ocean ridges have a spreading rate less than 20 mm/yr1, but due
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf0d4ca0bec4fa2b2ac50236e1d3462e
https://doi.org/10.5194/egusphere-egu2020-22586
https://doi.org/10.5194/egusphere-egu2020-22586
Autor:
Børge Arntsen, Espen Birger Raknes
Publikováno v:
The Leading Edge. 36:88-93
The full-waveform inversion (FWI) method relies on an effective numerical solution of the wave equation. The wave equation must be solved numerous times during an inversion run. In the past, to be able to use FWI in practice, it was necessary to assu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd86fa7152700c25edfc3a7ff2464ff0
https://doi.org/10.1190/tle36010088.1
https://doi.org/10.1190/tle36010088.1
Publikováno v:
GEOPHYSICS. 81:S383-S398
Recording P- and S-wave modes acquires more information related to rock properties of the earth’s interior. Elastic migration, as a part of multicomponent seismic data processing, potentially offers a great improvement over conventional acoustic mi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18850246e8e7a0655e2d549378a90bd2
https://doi.org/10.1190/geo2015-0704.1
https://doi.org/10.1190/geo2015-0704.1
Publikováno v:
GEOPHYSICS. 81:E57-E68
Subbasalt imaging has gained significant interest in the last two decades, driven by the urge to better understand the geologic structures beneath volcanic layers, which can be up to several kilometers thick. This understanding is crucial for the dev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b922b494a5620838dd4b2974d84e445f
https://doi.org/10.1190/geo2015-0137.1
https://doi.org/10.1190/geo2015-0137.1