Revised Storegga Slide reconstruction reveals two major submarine landslides 12,000 years apart
The Storegga Slide is the largest known exposed submarine landslide in the world, which triggered a tsunami that inundated the coasts of northern Europe ~8,150 years ago. Previous studies suggested the removal of 50–70 m of sediment from the northern slide scar segment, contributing half of the tota...
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ftunivbergen:oai:bora.uib.no:11250/3145241 2024-09-15T18:23:09+00:00 Revised Storegga Slide reconstruction reveals two major submarine landslides 12,000 years apart Karstens, Jens Haflidason, Haflidi Berndt, Christian Crutchley, Gareth J. 2023 application/pdf https://hdl.handle.net/11250/3145241 https://doi.org/10.1038/s43247-023-00710-y eng eng Nature urn:issn:2662-4435 https://hdl.handle.net/11250/3145241 https://doi.org/10.1038/s43247-023-00710-y cristin:2155192 Communications Earth & Environment. 2023, 4 (1), 55. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2023 The Author(s) 55 Communications Earth & Environment 4 1 Journal article Peer reviewed 2023 ftunivbergen https://doi.org/10.1038/s43247-023-00710-y 2024-08-13T23:41:38Z The Storegga Slide is the largest known exposed submarine landslide in the world, which triggered a tsunami that inundated the coasts of northern Europe ~8,150 years ago. Previous studies suggested the removal of 50–70 m of sediment from the northern slide scar segment, contributing half of the total slide volume of up to 3200 km³. However, new sediment echosounder profiles and sedimentological constraints show that most material within the northern Storegga slide scar had already failed ~20,000 years ago, at the end of the Last Glacial Maximum. We refer to this previously undetected slope failure as the Nyegga Slide. In our revised slope failure reconstruction, the Nyegga Slide removed more than 35 m of sediments that were previously attributed to the tsunamigenic Storegga Slide. This implies that large slope failures at the mid-Norwegian margin occur more frequently than previously thought, indicating a higher tsunami hazard for the North Atlantic. publishedVersion Article in Journal/Newspaper North Atlantic University of Bergen: Bergen Open Research Archive (BORA-UiB) Communications Earth & Environment 4 1 |
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Open Polar |
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University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
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English |
description |
The Storegga Slide is the largest known exposed submarine landslide in the world, which triggered a tsunami that inundated the coasts of northern Europe ~8,150 years ago. Previous studies suggested the removal of 50–70 m of sediment from the northern slide scar segment, contributing half of the total slide volume of up to 3200 km³. However, new sediment echosounder profiles and sedimentological constraints show that most material within the northern Storegga slide scar had already failed ~20,000 years ago, at the end of the Last Glacial Maximum. We refer to this previously undetected slope failure as the Nyegga Slide. In our revised slope failure reconstruction, the Nyegga Slide removed more than 35 m of sediments that were previously attributed to the tsunamigenic Storegga Slide. This implies that large slope failures at the mid-Norwegian margin occur more frequently than previously thought, indicating a higher tsunami hazard for the North Atlantic. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Karstens, Jens Haflidason, Haflidi Berndt, Christian Crutchley, Gareth J. |
spellingShingle |
Karstens, Jens Haflidason, Haflidi Berndt, Christian Crutchley, Gareth J. Revised Storegga Slide reconstruction reveals two major submarine landslides 12,000 years apart |
author_facet |
Karstens, Jens Haflidason, Haflidi Berndt, Christian Crutchley, Gareth J. |
author_sort |
Karstens, Jens |
title |
Revised Storegga Slide reconstruction reveals two major submarine landslides 12,000 years apart |
title_short |
Revised Storegga Slide reconstruction reveals two major submarine landslides 12,000 years apart |
title_full |
Revised Storegga Slide reconstruction reveals two major submarine landslides 12,000 years apart |
title_fullStr |
Revised Storegga Slide reconstruction reveals two major submarine landslides 12,000 years apart |
title_full_unstemmed |
Revised Storegga Slide reconstruction reveals two major submarine landslides 12,000 years apart |
title_sort |
revised storegga slide reconstruction reveals two major submarine landslides 12,000 years apart |
publisher |
Nature |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3145241 https://doi.org/10.1038/s43247-023-00710-y |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
55 Communications Earth & Environment 4 1 |
op_relation |
urn:issn:2662-4435 https://hdl.handle.net/11250/3145241 https://doi.org/10.1038/s43247-023-00710-y cristin:2155192 Communications Earth & Environment. 2023, 4 (1), 55. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2023 The Author(s) |
op_doi |
https://doi.org/10.1038/s43247-023-00710-y |
container_title |
Communications Earth & Environment |
container_volume |
4 |
container_issue |
1 |
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1810463289409273856 |