Slope instability of glaciated continental margins: Constrains from permeability-compressibility tests and hydrogeological modeling off Storfjorden, NW Barents Sea
6th International Symposium on Submarine Mass Movements and Their Consequences (ISSMMTC), 23-25 September 2013, Kiel, Germany Climate variations control sediment supply to the continental slope as well as glacial advances and retreats, which (a) cause significant stress changes in the sedimentary co...
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ftcsic:oai:digital.csic.es:10261/98352 2024-02-11T10:02:27+01:00 Slope instability of glaciated continental margins: Constrains from permeability-compressibility tests and hydrogeological modeling off Storfjorden, NW Barents Sea Llopart, Jaume Urgeles, Roger Camerlenghi, Angelo Lucchi, Renata G. De Mol, Ben Rebesco, Michele Pedrosa-González, María Teresa 2013-09-24 http://hdl.handle.net/10261/98352 unknown https://conferences.geomar.de/conferenceDisplay.py?confId=0 6th International Symposium on Submarine Mass Movements and Their Consequences - Book of abstracts: 14 (2013) http://hdl.handle.net/10261/98352 none comunicación de congreso http://purl.org/coar/resource_type/c_5794 2013 ftcsic 2024-01-16T09:59:26Z 6th International Symposium on Submarine Mass Movements and Their Consequences (ISSMMTC), 23-25 September 2013, Kiel, Germany Climate variations control sediment supply to the continental slope as well as glacial advances and retreats, which (a) cause significant stress changes in the sedimentary column and redistribution of interstitial fluids, (b) induce a particular margin stratigraphic pattern and permeability architecture and (c) are at the origin of isostatic adjustments that may reactivate faults. We test this hypothesis using a combination of geophysical and geotechnical data from the Storfjorden Trough Mouth Fan, off southern Svalbard. The results of compressibility and permeability testing are used together with margin stratigraphic models obtained from seismic reflection data, as input for numerical finite elements models to understand focusing of interstitial fluids in glaciated continental margins and influence on timing and location of submarine slope failure. Available results indicate values of overpressure of 0.23-0.5 (slope-shelf) that persists to present-day. This overpressure started to develop in response to onset of Pleistocene glaciations and reduced by half the factor of safety of the continental slope Peer Reviewed Conference Object Barents Sea Storfjorden Svalbard Digital.CSIC (Spanish National Research Council) Barents Sea Svalbard |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
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unknown |
description |
6th International Symposium on Submarine Mass Movements and Their Consequences (ISSMMTC), 23-25 September 2013, Kiel, Germany Climate variations control sediment supply to the continental slope as well as glacial advances and retreats, which (a) cause significant stress changes in the sedimentary column and redistribution of interstitial fluids, (b) induce a particular margin stratigraphic pattern and permeability architecture and (c) are at the origin of isostatic adjustments that may reactivate faults. We test this hypothesis using a combination of geophysical and geotechnical data from the Storfjorden Trough Mouth Fan, off southern Svalbard. The results of compressibility and permeability testing are used together with margin stratigraphic models obtained from seismic reflection data, as input for numerical finite elements models to understand focusing of interstitial fluids in glaciated continental margins and influence on timing and location of submarine slope failure. Available results indicate values of overpressure of 0.23-0.5 (slope-shelf) that persists to present-day. This overpressure started to develop in response to onset of Pleistocene glaciations and reduced by half the factor of safety of the continental slope Peer Reviewed |
format |
Conference Object |
author |
Llopart, Jaume Urgeles, Roger Camerlenghi, Angelo Lucchi, Renata G. De Mol, Ben Rebesco, Michele Pedrosa-González, María Teresa |
spellingShingle |
Llopart, Jaume Urgeles, Roger Camerlenghi, Angelo Lucchi, Renata G. De Mol, Ben Rebesco, Michele Pedrosa-González, María Teresa Slope instability of glaciated continental margins: Constrains from permeability-compressibility tests and hydrogeological modeling off Storfjorden, NW Barents Sea |
author_facet |
Llopart, Jaume Urgeles, Roger Camerlenghi, Angelo Lucchi, Renata G. De Mol, Ben Rebesco, Michele Pedrosa-González, María Teresa |
author_sort |
Llopart, Jaume |
title |
Slope instability of glaciated continental margins: Constrains from permeability-compressibility tests and hydrogeological modeling off Storfjorden, NW Barents Sea |
title_short |
Slope instability of glaciated continental margins: Constrains from permeability-compressibility tests and hydrogeological modeling off Storfjorden, NW Barents Sea |
title_full |
Slope instability of glaciated continental margins: Constrains from permeability-compressibility tests and hydrogeological modeling off Storfjorden, NW Barents Sea |
title_fullStr |
Slope instability of glaciated continental margins: Constrains from permeability-compressibility tests and hydrogeological modeling off Storfjorden, NW Barents Sea |
title_full_unstemmed |
Slope instability of glaciated continental margins: Constrains from permeability-compressibility tests and hydrogeological modeling off Storfjorden, NW Barents Sea |
title_sort |
slope instability of glaciated continental margins: constrains from permeability-compressibility tests and hydrogeological modeling off storfjorden, nw barents sea |
publishDate |
2013 |
url |
http://hdl.handle.net/10261/98352 |
geographic |
Barents Sea Svalbard |
geographic_facet |
Barents Sea Svalbard |
genre |
Barents Sea Storfjorden Svalbard |
genre_facet |
Barents Sea Storfjorden Svalbard |
op_relation |
https://conferences.geomar.de/conferenceDisplay.py?confId=0 6th International Symposium on Submarine Mass Movements and Their Consequences - Book of abstracts: 14 (2013) http://hdl.handle.net/10261/98352 |
op_rights |
none |
_version_ |
1790598404869455872 |