Evolution of contourite drifts in regions of slope failures at eastern Fram Strait
Geotechnical characteristics of contouritic deposition often lead to preconditioning slope instabilities and failures along glaciated and formerly glaciated continental margins. However, internal depositional geometry is also an important factor in triggering instabilities. This work highlights the...
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ftunivtroemsoe:oai:munin.uit.no:10037/17017 2023-05-15T14:26:58+02:00 Evolution of contourite drifts in regions of slope failures at eastern Fram Strait Osti, Giacomo Waghorn, Kate Alyse Waage, Malin Plaza-Faverola, Andreia Ferré, Benedicte 2019-11-15 https://hdl.handle.net/10037/17017 https://doi.org/10.1007/s41063-019-00070-y eng eng Springer Arktos Norges forskningsråd: 223259 info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Osti, G.; Waghorn, K.A.; Waage, M.; Plaza-Faverola, A.; Ferré, B. (2019) Evolution of contourite drifts in regions of slope failures at eastern Fram Strait. Arktos, 5 , (2),105-120. FRIDAID 1750903 doi:10.1007/s41063-019-00070-y 2364-9453 2364-9461 https://hdl.handle.net/10037/17017 openAccess © Springer Nature Switzerland AG 2019 VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2019 ftunivtroemsoe https://doi.org/10.1007/s41063-019-00070-y 2021-06-25T17:56:57Z Geotechnical characteristics of contouritic deposition often lead to preconditioning slope instabilities and failures along glaciated and formerly glaciated continental margins. However, internal depositional geometry is also an important factor in triggering instabilities. This work highlights the importance of the tectonic and oceanographic evolution of the Northwestern (NW) Svalbard margin in determining the buildup and the internal structure of contourite drifts and the subsequent type of slope instability. The analysis of seismic reflection data reveals that the presence of two contourite drifts on the flank of an active spreading ridge in the Fram Strait—NW Svalbard margin—in an area of extensive slope instability had a major impact on the evolution of slope failure. The presence of a slope sheeted drift (or plastered drift) led to the development of rotational/translational mass movement at water depth < 2500 ms, whereas at water depth > 2500 ms the presence of sediment waves facilitated the formation of planes of shear that led to internal deformation of the lower slope through a process of slump/creep. The well-documented high seismicity of the area might have provided the necessary energy to trigger the slope instability. Article in Journal/Newspaper Arctic Fram Strait Svalbard Svalbard margin University of Tromsø: Munin Open Research Archive Svalbard arktos 5 2 105 120 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 Osti, Giacomo Waghorn, Kate Alyse Waage, Malin Plaza-Faverola, Andreia Ferré, Benedicte Evolution of contourite drifts in regions of slope failures at eastern Fram Strait |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 |
description |
Geotechnical characteristics of contouritic deposition often lead to preconditioning slope instabilities and failures along glaciated and formerly glaciated continental margins. However, internal depositional geometry is also an important factor in triggering instabilities. This work highlights the importance of the tectonic and oceanographic evolution of the Northwestern (NW) Svalbard margin in determining the buildup and the internal structure of contourite drifts and the subsequent type of slope instability. The analysis of seismic reflection data reveals that the presence of two contourite drifts on the flank of an active spreading ridge in the Fram Strait—NW Svalbard margin—in an area of extensive slope instability had a major impact on the evolution of slope failure. The presence of a slope sheeted drift (or plastered drift) led to the development of rotational/translational mass movement at water depth < 2500 ms, whereas at water depth > 2500 ms the presence of sediment waves facilitated the formation of planes of shear that led to internal deformation of the lower slope through a process of slump/creep. The well-documented high seismicity of the area might have provided the necessary energy to trigger the slope instability. |
format |
Article in Journal/Newspaper |
author |
Osti, Giacomo Waghorn, Kate Alyse Waage, Malin Plaza-Faverola, Andreia Ferré, Benedicte |
author_facet |
Osti, Giacomo Waghorn, Kate Alyse Waage, Malin Plaza-Faverola, Andreia Ferré, Benedicte |
author_sort |
Osti, Giacomo |
title |
Evolution of contourite drifts in regions of slope failures at eastern Fram Strait |
title_short |
Evolution of contourite drifts in regions of slope failures at eastern Fram Strait |
title_full |
Evolution of contourite drifts in regions of slope failures at eastern Fram Strait |
title_fullStr |
Evolution of contourite drifts in regions of slope failures at eastern Fram Strait |
title_full_unstemmed |
Evolution of contourite drifts in regions of slope failures at eastern Fram Strait |
title_sort |
evolution of contourite drifts in regions of slope failures at eastern fram strait |
publisher |
Springer |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/17017 https://doi.org/10.1007/s41063-019-00070-y |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
Arctic Fram Strait Svalbard Svalbard margin |
genre_facet |
Arctic Fram Strait Svalbard Svalbard margin |
op_relation |
Arktos Norges forskningsråd: 223259 info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Osti, G.; Waghorn, K.A.; Waage, M.; Plaza-Faverola, A.; Ferré, B. (2019) Evolution of contourite drifts in regions of slope failures at eastern Fram Strait. Arktos, 5 , (2),105-120. FRIDAID 1750903 doi:10.1007/s41063-019-00070-y 2364-9453 2364-9461 https://hdl.handle.net/10037/17017 |
op_rights |
openAccess © Springer Nature Switzerland AG 2019 |
op_doi |
https://doi.org/10.1007/s41063-019-00070-y |
container_title |
arktos |
container_volume |
5 |
container_issue |
2 |
container_start_page |
105 |
op_container_end_page |
120 |
_version_ |
1766300518730170368 |