Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data
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...
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2014
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Online Access: | http://gji.oxfordjournals.org/cgi/content/short/196/3/1466 https://doi.org/10.1093/gji/ggt497 |
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fthighwire:oai:open-archive.highwire.org:gji:196/3/1466 2023-05-15T14:28:48+02:00 Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data Ker, S. Le Gonidec, Y. Marsset, B. Westbrook, G. K. Gibert, D. Minshull, T. A. 2014-03-01 00:00:00.0 text/html http://gji.oxfordjournals.org/cgi/content/short/196/3/1466 https://doi.org/10.1093/gji/ggt497 en eng Oxford University Press http://gji.oxfordjournals.org/cgi/content/short/196/3/1466 http://dx.doi.org/10.1093/gji/ggt497 Copyright (C) 2014, Oxford University Press Marine geosciences and applied geophysics TEXT 2014 fthighwire https://doi.org/10.1093/gji/ggt497 2018-04-07T06:24:42Z 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 reverse-polarity 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. Text Arctic Archipelago Arctic Svalbard HighWire Press (Stanford University) Arctic Svalbard Geophysical Journal International 196 3 1466 1470 |
institution |
Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Marine geosciences and applied geophysics |
spellingShingle |
Marine geosciences and applied geophysics Ker, S. Le Gonidec, Y. Marsset, B. Westbrook, G. K. Gibert, D. Minshull, T. A. Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data |
topic_facet |
Marine geosciences and applied geophysics |
description |
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 reverse-polarity 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. |
format |
Text |
author |
Ker, S. Le Gonidec, Y. Marsset, B. Westbrook, G. K. Gibert, D. Minshull, T. A. |
author_facet |
Ker, S. Le Gonidec, Y. Marsset, B. Westbrook, G. K. Gibert, D. Minshull, T. A. |
author_sort |
Ker, S. |
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 |
Oxford University Press |
publishDate |
2014 |
url |
http://gji.oxfordjournals.org/cgi/content/short/196/3/1466 https://doi.org/10.1093/gji/ggt497 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Archipelago Arctic Svalbard |
genre_facet |
Arctic Archipelago Arctic Svalbard |
op_relation |
http://gji.oxfordjournals.org/cgi/content/short/196/3/1466 http://dx.doi.org/10.1093/gji/ggt497 |
op_rights |
Copyright (C) 2014, Oxford University Press |
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 |
_version_ |
1766302953899032576 |