Sub-basalt decoupled walkaway VSP imaging
Walkaway vertical seismic profile (VSP) data acquired in basalt-covered areas can be used to improve knowledge of the sub-basalt structure. A synthetic example and a case study from the North Atlantic (UK) show that elastic two-way downward-continuation migration combined with the stationary-phase p...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/504294/ https://doi.org/10.1111/j.1365-2478.2005.00431.x |
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ftnerc:oai:nora.nerc.ac.uk:504294 2023-05-15T17:31:52+02:00 Sub-basalt decoupled walkaway VSP imaging Droujinine, Alexander 2005 http://nora.nerc.ac.uk/id/eprint/504294/ https://doi.org/10.1111/j.1365-2478.2005.00431.x unknown Wiley Droujinine, Alexander. 2005 Sub-basalt decoupled walkaway VSP imaging. Geophysical Prospecting, 53 (1). 37-63. https://doi.org/10.1111/j.1365-2478.2005.00431.x <https://doi.org/10.1111/j.1365-2478.2005.00431.x> Publication - Article PeerReviewed 2005 ftnerc https://doi.org/10.1111/j.1365-2478.2005.00431.x 2023-02-04T19:38:23Z Walkaway vertical seismic profile (VSP) data acquired in basalt-covered areas can be used to improve knowledge of the sub-basalt structure. A synthetic example and a case study from the North Atlantic (UK) show that elastic two-way downward-continuation migration combined with the stationary-phase principle is well suited to the processing of VSP data. Vector data are processed using decoupled elastic migration algorithms in both isotropic and anisotropic media. To illustrate the value of decoupled imaging equations, conventional PP imaging is carried out on the enhanced VSP data and compared with the decoupled scheme. Decoupled vector migration operates directly on the displacement vector, and uses various wave modes. Downgoing waves are migrated to image basalt lava flows and measure their anisotropy. Upgoing waves are used for high-resolution sub-basalt imaging. Article in Journal/Newspaper North Atlantic Natural Environment Research Council: NERC Open Research Archive Geophysical Prospecting 53 1 37 63 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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unknown |
description |
Walkaway vertical seismic profile (VSP) data acquired in basalt-covered areas can be used to improve knowledge of the sub-basalt structure. A synthetic example and a case study from the North Atlantic (UK) show that elastic two-way downward-continuation migration combined with the stationary-phase principle is well suited to the processing of VSP data. Vector data are processed using decoupled elastic migration algorithms in both isotropic and anisotropic media. To illustrate the value of decoupled imaging equations, conventional PP imaging is carried out on the enhanced VSP data and compared with the decoupled scheme. Decoupled vector migration operates directly on the displacement vector, and uses various wave modes. Downgoing waves are migrated to image basalt lava flows and measure their anisotropy. Upgoing waves are used for high-resolution sub-basalt imaging. |
format |
Article in Journal/Newspaper |
author |
Droujinine, Alexander |
spellingShingle |
Droujinine, Alexander Sub-basalt decoupled walkaway VSP imaging |
author_facet |
Droujinine, Alexander |
author_sort |
Droujinine, Alexander |
title |
Sub-basalt decoupled walkaway VSP imaging |
title_short |
Sub-basalt decoupled walkaway VSP imaging |
title_full |
Sub-basalt decoupled walkaway VSP imaging |
title_fullStr |
Sub-basalt decoupled walkaway VSP imaging |
title_full_unstemmed |
Sub-basalt decoupled walkaway VSP imaging |
title_sort |
sub-basalt decoupled walkaway vsp imaging |
publisher |
Wiley |
publishDate |
2005 |
url |
http://nora.nerc.ac.uk/id/eprint/504294/ https://doi.org/10.1111/j.1365-2478.2005.00431.x |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Droujinine, Alexander. 2005 Sub-basalt decoupled walkaway VSP imaging. Geophysical Prospecting, 53 (1). 37-63. https://doi.org/10.1111/j.1365-2478.2005.00431.x <https://doi.org/10.1111/j.1365-2478.2005.00431.x> |
op_doi |
https://doi.org/10.1111/j.1365-2478.2005.00431.x |
container_title |
Geophysical Prospecting |
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53 |
container_issue |
1 |
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37 |
op_container_end_page |
63 |
_version_ |
1766129679132000256 |