Distribution and origin of submarine landslides in the active margin of the southern Alboran Sea (Western Mediterranean Sea)
19 pages, 13 figures, 1 table, supplementary material https://doi.org/10.1016/j.margeo.2022.106739.-- Seismic reflection and bathymetric data collected during the MARLBORO and SARAS cruises are stored at SISMER repository (https://doi.org/10.17600/11480100, https://doi.org/10.17600/12450090, and https://campagnes.flotteoceanographique.fr/campagnes/12000010). Landslide parameters for MTDs mapped during this study are given in the appendix.
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| Format: | artículo biblioteca |
| Language: | English |
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Elsevier
2022-03
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| Subjects: | Alboran Sea, Submarine landslides, Triggering and preconditioning factors, Slope stability analysis, Seismic reflection, Morphostructural analysis, Al Idrissi fault zone, |
| Online Access: | http://hdl.handle.net/10261/263335 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100004794 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 |
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Alboran Sea Submarine landslides Triggering and preconditioning factors Slope stability analysis Seismic reflection Morphostructural analysis Al Idrissi fault zone Alboran Sea Submarine landslides Triggering and preconditioning factors Slope stability analysis Seismic reflection Morphostructural analysis Al Idrissi fault zone |
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Alboran Sea Submarine landslides Triggering and preconditioning factors Slope stability analysis Seismic reflection Morphostructural analysis Al Idrissi fault zone Alboran Sea Submarine landslides Triggering and preconditioning factors Slope stability analysis Seismic reflection Morphostructural analysis Al Idrissi fault zone D'Acremont, E. Lafuerza, S. Rabaute, Alain Lafosse, Manfred Jollivet-Castelot, Martin Gorini, Christian Alonso, Belén Ercilla, Gemma Vázquez, Juan Tomás Vandorpe, Thomas Juan, Carmen Migeon, S. Ceramicola, Silvia López-González, Nieves Rodriguez, Mathieu El Moumni, Bouchta Benmarha, Oumnia Ammar, Abdellah Distribution and origin of submarine landslides in the active margin of the southern Alboran Sea (Western Mediterranean Sea) |
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19 pages, 13 figures, 1 table, supplementary material https://doi.org/10.1016/j.margeo.2022.106739.-- Seismic reflection and bathymetric data collected during the MARLBORO and SARAS cruises are stored at SISMER repository (https://doi.org/10.17600/11480100, https://doi.org/10.17600/12450090, and https://campagnes.flotteoceanographique.fr/campagnes/12000010). Landslide parameters for MTDs mapped during this study are given in the appendix. |
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Centre National de la Recherche Scientifique (France) |
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Centre National de la Recherche Scientifique (France) D'Acremont, E. Lafuerza, S. Rabaute, Alain Lafosse, Manfred Jollivet-Castelot, Martin Gorini, Christian Alonso, Belén Ercilla, Gemma Vázquez, Juan Tomás Vandorpe, Thomas Juan, Carmen Migeon, S. Ceramicola, Silvia López-González, Nieves Rodriguez, Mathieu El Moumni, Bouchta Benmarha, Oumnia Ammar, Abdellah |
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artículo |
| topic_facet |
Alboran Sea Submarine landslides Triggering and preconditioning factors Slope stability analysis Seismic reflection Morphostructural analysis Al Idrissi fault zone |
| author |
D'Acremont, E. Lafuerza, S. Rabaute, Alain Lafosse, Manfred Jollivet-Castelot, Martin Gorini, Christian Alonso, Belén Ercilla, Gemma Vázquez, Juan Tomás Vandorpe, Thomas Juan, Carmen Migeon, S. Ceramicola, Silvia López-González, Nieves Rodriguez, Mathieu El Moumni, Bouchta Benmarha, Oumnia Ammar, Abdellah |
| author_sort |
D'Acremont, E. |
| title |
Distribution and origin of submarine landslides in the active margin of the southern Alboran Sea (Western Mediterranean Sea) |
| title_short |
Distribution and origin of submarine landslides in the active margin of the southern Alboran Sea (Western Mediterranean Sea) |
| title_full |
Distribution and origin of submarine landslides in the active margin of the southern Alboran Sea (Western Mediterranean Sea) |
| title_fullStr |
Distribution and origin of submarine landslides in the active margin of the southern Alboran Sea (Western Mediterranean Sea) |
| title_full_unstemmed |
Distribution and origin of submarine landslides in the active margin of the southern Alboran Sea (Western Mediterranean Sea) |
| title_sort |
distribution and origin of submarine landslides in the active margin of the southern alboran sea (western mediterranean sea) |
| publisher |
Elsevier |
| publishDate |
2022-03 |
| url |
http://hdl.handle.net/10261/263335 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100004794 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 |
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dig-icm-es-10261-2633352022-12-14T12:19:50Z Distribution and origin of submarine landslides in the active margin of the southern Alboran Sea (Western Mediterranean Sea) D'Acremont, E. Lafuerza, S. Rabaute, Alain Lafosse, Manfred Jollivet-Castelot, Martin Gorini, Christian Alonso, Belén Ercilla, Gemma Vázquez, Juan Tomás Vandorpe, Thomas Juan, Carmen Migeon, S. Ceramicola, Silvia López-González, Nieves Rodriguez, Mathieu El Moumni, Bouchta Benmarha, Oumnia Ammar, Abdellah Centre National de la Recherche Scientifique (France) European Commission Ministerio de Economía y Competitividad (España) Agencia Estatal de Investigación (España) Alboran Sea Submarine landslides Triggering and preconditioning factors Slope stability analysis Seismic reflection Morphostructural analysis Al Idrissi fault zone 19 pages, 13 figures, 1 table, supplementary material https://doi.org/10.1016/j.margeo.2022.106739.-- Seismic reflection and bathymetric data collected during the MARLBORO and SARAS cruises are stored at SISMER repository (https://doi.org/10.17600/11480100, https://doi.org/10.17600/12450090, and https://campagnes.flotteoceanographique.fr/campagnes/12000010). Landslide parameters for MTDs mapped during this study are given in the appendix. Earthquakes are the most commonly cited cause of offshore slope failure, followed by high sedimentation rates and ensuing pore pressure build-up. In the South Alboran Sea, the moderate seismicity (Mw = 6.4) of the strike-slip Al Idrissi Fault Zone does not appear to control directly the landslides distribution. To provide a preliminary geohazard assessment, we characterized the spatial distribution, the volume and the ages of the submarine landslides from multibeam and seismic reflection data in the southern part of the Alboran Sea. Since the Quaternary numerous submarine landslide processes have affected the marine sedimentary cover with volumes of the mass transport deposits (MTD) estimated between 0.01 and 15 km3. West of the Al Idrissi Fault Zone, along the South Alboran Ridge's northern flank, the distribution of the MTD follows the SW-NE bank and ridge trend that correlates with blind thrusts and folds covered by a plastered contourite drift. A pockmark field, related to fluid escape, is visible near landslide scars where the contourite drift is relatively thicker. In this area, landslide scars occur on variable slopes (2–24°) and their associated MTDs show variable decompacted volumes (0.01-10 km3). East of the Al Idrissi Fault Zone, between the Alboran Ridge and the Pytheas Bank, the mapped MTDs have uneven volume. The smaller ones (<1 km3) have their slide scars on steep slopes (>10°), whereas those of the largest ones (3–15 km3) occur on gentler slopes (<5°). These observations and a slope stability analysis suggest that the combination of seismic shaking, blind thrusts activity, relatively high sedimentation rate of contourite deposits with potential weak layers, and fluid escape dynamics are likely the main controlling mechanisms. These causal factors would explain the concentration of landslide head scarps at the edge of the thickest parts of the contourite drifts (i.e. crest). Slides may have been controlled locally by fluid overpressures in line with blind thrusts. Additionally, low to moderate seismicity potentially triggered by nearby faults might regionally have played a role in destabilising the landslides since 1.12 Ma (Q2 unit), which coincides with the propagation of the Al Idrissi Fault Zone in the southern Alboran Sea This work was funded by the French programs Actions Marges, Défi Risques Naturels CNRS-IRD (MITI-ALARM) and UPMC-Emergence (ALARM project), the ALBAMAR JCJC ANR-17-03CE-0004, the EUROFLEETS program (FP7/2007-2013; n°228344), project FICTS-2011-03-01. Seismic reflection data were processed using the Seismic UNIX SU and Geovecteur© software. The processed seismic data were interpreted using Kingdom IHS Suite© software. This work also benefited from the DAMAGE (AEI/FEDER CGL2016-80687-R) and FAUCES (Ref CTM2015-65461-C2-R; MINCIU/FEDER) Projects financed by “Ministerio de Economía y Competitividad y al Fondo Europeo de Desarrollo Regional” (FEDER). This work acknowledges the ‘Severo Ochoa Centre of Excellence’ accreditation of ICM-CSIC (CEX2019-000928-S Peer reviewed 2022-03-08T12:37:37Z 2022-03-08T12:37:37Z 2022-03 artículo http://purl.org/coar/resource_type/c_6501 Marine Geology 445: 106739 (2022) 0025-3227 CEX2019-000928-S http://hdl.handle.net/10261/263335 10.1016/j.margeo.2022.106739 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100004794 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 en #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/228344 info:eu-repo/grantAgreement/MINECO//CGL2016-80687-R info:eu-repo/grantAgreement/MINECO//CTM2015-65461-C2-1-R/ES/FACTORES DE RIESGO GEOLOGICO ASOCIADO A CABECERAS DE CAÑONES SUBMARINOS DEL SUR DE LA PENINSULA IBERICA/ Postprint https://doi.org/10.1016/j.margeo.2022.106739 Sí open Elsevier |