Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data
International audience In the context of seismic imaging of gas/gas-hydrate systems, the fine-scale structure of subseabed gas-related reflections is assessed by taking advantage of the source signature of the deep-towed high-resolution SYSIF seismic device. We demonstrate the value of an original w...
Published in: | Geophysical Journal International |
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Online Access: | https://insu.hal.science/insu-00953102 https://insu.hal.science/insu-00953102/document https://insu.hal.science/insu-00953102/file/PL03266.pdf https://doi.org/10.1093/gji/ggt497 |
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ftunivrennes2hal:oai:HAL:insu-00953102v1 2024-04-28T08:05:13+00:00 Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data Ker, Stephan Le Gonidec, Yves Marsset, Bruno Westbrook, G.K. Gibert, Dominique Minshull, T.A. Unité Géosciences Marines (GM) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) National Oceanography Centre Southampton (NOC) University of Southampton 2014 https://insu.hal.science/insu-00953102 https://insu.hal.science/insu-00953102/document https://insu.hal.science/insu-00953102/file/PL03266.pdf https://doi.org/10.1093/gji/ggt497 en eng HAL CCSD Oxford University Press (OUP) info:eu-repo/semantics/altIdentifier/doi/10.1093/gji/ggt497 insu-00953102 https://insu.hal.science/insu-00953102 https://insu.hal.science/insu-00953102/document https://insu.hal.science/insu-00953102/file/PL03266.pdf doi:10.1093/gji/ggt497 info:eu-repo/semantics/OpenAccess ISSN: 0956-540X EISSN: 1365-246X Geophysical Journal International https://insu.hal.science/insu-00953102 Geophysical Journal International, 2014, 196 (3), pp.1466-1470. ⟨10.1093/gji/ggt497⟩ Wavelet transform Gas and hydrate systems Wave propagation Acoustic properties Arctic region [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2014 ftunivrennes2hal https://doi.org/10.1093/gji/ggt497 2024-04-10T14:19:25Z International audience In the context of seismic imaging of gas/gas-hydrate systems, the fine-scale structure of subseabed gas-related reflections is assessed by taking advantage of the source signature of the deep-towed high-resolution SYSIF seismic device. We demonstrate the value of an original wavelet-based method and associated multiscale seismic attributes, applied to seismic data recently acquired on the western margin of the Arctic archipelago of Svalbard. From analysis in the wavelet domain, we recognize two types of gas-related reflections associated with submetre-scale distribution of gas. We identify a thin gas-charged layer associated with an apparent normal polarity reflection, and we detect gas patches associated with a reversepolarity bright spot with frequency-dependent elastic properties at small seismic wavelengths. The results provide valuable information on the scale of features through which gas migrates and resolve ambiguities in the interpretation of the seismic data. Article in Journal/Newspaper Arctic Archipelago Arctic Svalbard Archive Ouverte de l'Université Rennes (HAL) Geophysical Journal International 196 3 1466 1470 |
institution |
Open Polar |
collection |
Archive Ouverte de l'Université Rennes (HAL) |
op_collection_id |
ftunivrennes2hal |
language |
English |
topic |
Wavelet transform Gas and hydrate systems Wave propagation Acoustic properties Arctic region [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
Wavelet transform Gas and hydrate systems Wave propagation Acoustic properties Arctic region [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Ker, Stephan Le Gonidec, Yves Marsset, Bruno Westbrook, G.K. Gibert, Dominique Minshull, T.A. Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data |
topic_facet |
Wavelet transform Gas and hydrate systems Wave propagation Acoustic properties Arctic region [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience In the context of seismic imaging of gas/gas-hydrate systems, the fine-scale structure of subseabed gas-related reflections is assessed by taking advantage of the source signature of the deep-towed high-resolution SYSIF seismic device. We demonstrate the value of an original wavelet-based method and associated multiscale seismic attributes, applied to seismic data recently acquired on the western margin of the Arctic archipelago of Svalbard. From analysis in the wavelet domain, we recognize two types of gas-related reflections associated with submetre-scale distribution of gas. We identify a thin gas-charged layer associated with an apparent normal polarity reflection, and we detect gas patches associated with a reversepolarity bright spot with frequency-dependent elastic properties at small seismic wavelengths. The results provide valuable information on the scale of features through which gas migrates and resolve ambiguities in the interpretation of the seismic data. |
author2 |
Unité Géosciences Marines (GM) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) National Oceanography Centre Southampton (NOC) University of Southampton |
format |
Article in Journal/Newspaper |
author |
Ker, Stephan Le Gonidec, Yves Marsset, Bruno Westbrook, G.K. Gibert, Dominique Minshull, T.A. |
author_facet |
Ker, Stephan Le Gonidec, Yves Marsset, Bruno Westbrook, G.K. Gibert, Dominique Minshull, T.A. |
author_sort |
Ker, Stephan |
title |
Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data |
title_short |
Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data |
title_full |
Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data |
title_fullStr |
Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data |
title_full_unstemmed |
Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data |
title_sort |
fine-scale gas distribution in marine sediments assessed from deep-towed seismic data |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://insu.hal.science/insu-00953102 https://insu.hal.science/insu-00953102/document https://insu.hal.science/insu-00953102/file/PL03266.pdf https://doi.org/10.1093/gji/ggt497 |
genre |
Arctic Archipelago Arctic Svalbard |
genre_facet |
Arctic Archipelago Arctic Svalbard |
op_source |
ISSN: 0956-540X EISSN: 1365-246X Geophysical Journal International https://insu.hal.science/insu-00953102 Geophysical Journal International, 2014, 196 (3), pp.1466-1470. ⟨10.1093/gji/ggt497⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/gji/ggt497 insu-00953102 https://insu.hal.science/insu-00953102 https://insu.hal.science/insu-00953102/document https://insu.hal.science/insu-00953102/file/PL03266.pdf doi:10.1093/gji/ggt497 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1093/gji/ggt497 |
container_title |
Geophysical Journal International |
container_volume |
196 |
container_issue |
3 |
container_start_page |
1466 |
op_container_end_page |
1470 |
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1797575393316700160 |