Tsunami modeling of a submarine landslide in the Fram Strait
The present geological setting west of Svalbard closely parallels the situation off mid-Norway after the last glaciation, when crustal unloading by melting of ice induced very large earthquakes. Today, on the modern Svalbard margin, increasing bottom water temperatures are destabilizing marine gas h...
Published in: | Geochemistry, Geophysics, Geosystems |
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ftsouthampton:oai:eprints.soton.ac.uk:71938 2023-07-30T04:03:32+02:00 Tsunami modeling of a submarine landslide in the Fram Strait Berndt, Christian Brune, Sascha Nisbet, Euan Zschau, Jochen Sobolev, Stephan V. 2009 https://eprints.soton.ac.uk/71938/ http://www.agu.org/journals/gc/gc0904/2008GC002292/ unknown Berndt, Christian, Brune, Sascha, Nisbet, Euan, Zschau, Jochen and Sobolev, Stephan V. (2009) Tsunami modeling of a submarine landslide in the Fram Strait. Geochemistry, Geophysics, Geosystems, 10, Q04009. (doi:10.1029/2008GC002292 <http://dx.doi.org/10.1029/2008GC002292>). Article PeerReviewed 2009 ftsouthampton https://doi.org/10.1029/2008GC002292 2023-07-09T21:08:20Z The present geological setting west of Svalbard closely parallels the situation off mid-Norway after the last glaciation, when crustal unloading by melting of ice induced very large earthquakes. Today, on the modern Svalbard margin, increasing bottom water temperatures are destabilizing marine gas hydrates, which are held in continental margin sediments consisting of interlayered contourite deposits and glacigenic debris flows. Both unloading earthquakes and hydrate failure have been identified as key factors causing several megalandslides off Norway during early Holocene deglaciation. The most prominent event was the Storegga Slide 8200 years B.P. which caused a tsunami up to 23 m high on the Faroe and Shetland islands. Here we show by numerical tsunami modeling that a smaller submarine landslide west of Svalbard, 100 m high and 130 km wide, would cause a tsunami capable of reaching northwest Europe and threatening coastal areas. A tsunami warning system based on tiltmeters would give a warning time of 1–4 h. Article in Journal/Newspaper Fram Strait Svalbard Svalbard margin University of Southampton: e-Prints Soton Svalbard Norway Storegga ENVELOPE(18.251,18.251,68.645,68.645) Geochemistry, Geophysics, Geosystems 10 4 n/a n/a |
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Open Polar |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
language |
unknown |
description |
The present geological setting west of Svalbard closely parallels the situation off mid-Norway after the last glaciation, when crustal unloading by melting of ice induced very large earthquakes. Today, on the modern Svalbard margin, increasing bottom water temperatures are destabilizing marine gas hydrates, which are held in continental margin sediments consisting of interlayered contourite deposits and glacigenic debris flows. Both unloading earthquakes and hydrate failure have been identified as key factors causing several megalandslides off Norway during early Holocene deglaciation. The most prominent event was the Storegga Slide 8200 years B.P. which caused a tsunami up to 23 m high on the Faroe and Shetland islands. Here we show by numerical tsunami modeling that a smaller submarine landslide west of Svalbard, 100 m high and 130 km wide, would cause a tsunami capable of reaching northwest Europe and threatening coastal areas. A tsunami warning system based on tiltmeters would give a warning time of 1–4 h. |
format |
Article in Journal/Newspaper |
author |
Berndt, Christian Brune, Sascha Nisbet, Euan Zschau, Jochen Sobolev, Stephan V. |
spellingShingle |
Berndt, Christian Brune, Sascha Nisbet, Euan Zschau, Jochen Sobolev, Stephan V. Tsunami modeling of a submarine landslide in the Fram Strait |
author_facet |
Berndt, Christian Brune, Sascha Nisbet, Euan Zschau, Jochen Sobolev, Stephan V. |
author_sort |
Berndt, Christian |
title |
Tsunami modeling of a submarine landslide in the Fram Strait |
title_short |
Tsunami modeling of a submarine landslide in the Fram Strait |
title_full |
Tsunami modeling of a submarine landslide in the Fram Strait |
title_fullStr |
Tsunami modeling of a submarine landslide in the Fram Strait |
title_full_unstemmed |
Tsunami modeling of a submarine landslide in the Fram Strait |
title_sort |
tsunami modeling of a submarine landslide in the fram strait |
publishDate |
2009 |
url |
https://eprints.soton.ac.uk/71938/ http://www.agu.org/journals/gc/gc0904/2008GC002292/ |
long_lat |
ENVELOPE(18.251,18.251,68.645,68.645) |
geographic |
Svalbard Norway Storegga |
geographic_facet |
Svalbard Norway Storegga |
genre |
Fram Strait Svalbard Svalbard margin |
genre_facet |
Fram Strait Svalbard Svalbard margin |
op_relation |
Berndt, Christian, Brune, Sascha, Nisbet, Euan, Zschau, Jochen and Sobolev, Stephan V. (2009) Tsunami modeling of a submarine landslide in the Fram Strait. Geochemistry, Geophysics, Geosystems, 10, Q04009. (doi:10.1029/2008GC002292 <http://dx.doi.org/10.1029/2008GC002292>). |
op_doi |
https://doi.org/10.1029/2008GC002292 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
10 |
container_issue |
4 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1772814566969835520 |