Deep-water seamounts, a potential source of tsunami generated by landslides? The Hirondelle Seamount, NE Atlantic
Submarine mass failures represent one of the most significant marine geo hazards. Their importance as a major contributor to tsunami generation and hazard has been recognized over the last 20–30 years. This study investigates a newly mapped submarine landslide, the South Hirondelle Landslide (SHL),...
Published in: | Marine Geology |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2016
|
Subjects: | |
Online Access: | http://hdl.handle.net/10400.21/7136 https://doi.org/10.1016/j.margeo.2016.06.010 |
id |
ftinstplisboa:oai:repositorio.ipl.pt:10400.21/7136 |
---|---|
record_format |
openpolar |
spelling |
ftinstplisboa:oai:repositorio.ipl.pt:10400.21/7136 2023-05-15T17:38:28+02:00 Deep-water seamounts, a potential source of tsunami generated by landslides? The Hirondelle Seamount, NE Atlantic Omira, Rachid Ramalho, Inês Terrinha, Pedro Baptista, Maria Ana Carvalho Viana Batista, Luís Zitellini, Nevio 2016 http://hdl.handle.net/10400.21/7136 https://doi.org/10.1016/j.margeo.2016.06.010 eng eng Elsevier http://ac.els-cdn.com/S0025322716301244/1-s2.0-S0025322716301244-main.pdf?_tid=dc493b4c-4777-11e7-9e9b-00000aacb362&acdnat=1496396758_c1a75ca6c31fd8f0312858710c73e46a OMIRA, R,; [et al] - Deep-water seamounts, a potential source of tsunami generated by landslides? The Hirondelle Seamount, NE Atlantic. Marine Geology. ISSN 0025-3227. Vol. 379 (2016), pp. 267-280 0025-3227 1872-6151 http://hdl.handle.net/10400.21/7136 doi:10.1016/j.margeo.2016.06.010 closedAccess Submarine mass-failures Deep-water seamount Tsunamigenic potential NE Atlantic article 2016 ftinstplisboa https://doi.org/10.1016/j.margeo.2016.06.010 2022-05-25T18:36:20Z Submarine mass failures represent one of the most significant marine geo hazards. Their importance as a major contributor to tsunami generation and hazard has been recognized over the last 20–30 years. This study investigates a newly mapped submarine landslide, the South Hirondelle Landslide (SHL), and its potential to generate a tsunami and to threat the surrounding coasts. The SHL is located 150 km offshore South West Iberia, along the southern flank of the Hirondelle Seamount. Here, available swath bathymetry and one multichannel seismic profile show the presence of large, geometrically well constrained, deepwater landslide deposit of about 500 km3 and its associated scar. The failure likely occurred in one single event and according to a detailed numerical modelling of the landslide dynamics and of the resulting water propagation the mass failure generated a mega-tsunami, with significant impact along the surrounding coastal areas of Iberia and Morocco. This result strongly supports the inclusion of tsunami induced by deep-water submarine landslides in the marine geo-hazard assessment of the North East Atlantic region. PTDC/GEO-GEO/4430/2012 info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper North East Atlantic Instituto Politécnico de Lisboa: Repositório Científico do IPL Marine Geology 379 267 280 |
institution |
Open Polar |
collection |
Instituto Politécnico de Lisboa: Repositório Científico do IPL |
op_collection_id |
ftinstplisboa |
language |
English |
topic |
Submarine mass-failures Deep-water seamount Tsunamigenic potential NE Atlantic |
spellingShingle |
Submarine mass-failures Deep-water seamount Tsunamigenic potential NE Atlantic Omira, Rachid Ramalho, Inês Terrinha, Pedro Baptista, Maria Ana Carvalho Viana Batista, Luís Zitellini, Nevio Deep-water seamounts, a potential source of tsunami generated by landslides? The Hirondelle Seamount, NE Atlantic |
topic_facet |
Submarine mass-failures Deep-water seamount Tsunamigenic potential NE Atlantic |
description |
Submarine mass failures represent one of the most significant marine geo hazards. Their importance as a major contributor to tsunami generation and hazard has been recognized over the last 20–30 years. This study investigates a newly mapped submarine landslide, the South Hirondelle Landslide (SHL), and its potential to generate a tsunami and to threat the surrounding coasts. The SHL is located 150 km offshore South West Iberia, along the southern flank of the Hirondelle Seamount. Here, available swath bathymetry and one multichannel seismic profile show the presence of large, geometrically well constrained, deepwater landslide deposit of about 500 km3 and its associated scar. The failure likely occurred in one single event and according to a detailed numerical modelling of the landslide dynamics and of the resulting water propagation the mass failure generated a mega-tsunami, with significant impact along the surrounding coastal areas of Iberia and Morocco. This result strongly supports the inclusion of tsunami induced by deep-water submarine landslides in the marine geo-hazard assessment of the North East Atlantic region. PTDC/GEO-GEO/4430/2012 info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
Omira, Rachid Ramalho, Inês Terrinha, Pedro Baptista, Maria Ana Carvalho Viana Batista, Luís Zitellini, Nevio |
author_facet |
Omira, Rachid Ramalho, Inês Terrinha, Pedro Baptista, Maria Ana Carvalho Viana Batista, Luís Zitellini, Nevio |
author_sort |
Omira, Rachid |
title |
Deep-water seamounts, a potential source of tsunami generated by landslides? The Hirondelle Seamount, NE Atlantic |
title_short |
Deep-water seamounts, a potential source of tsunami generated by landslides? The Hirondelle Seamount, NE Atlantic |
title_full |
Deep-water seamounts, a potential source of tsunami generated by landslides? The Hirondelle Seamount, NE Atlantic |
title_fullStr |
Deep-water seamounts, a potential source of tsunami generated by landslides? The Hirondelle Seamount, NE Atlantic |
title_full_unstemmed |
Deep-water seamounts, a potential source of tsunami generated by landslides? The Hirondelle Seamount, NE Atlantic |
title_sort |
deep-water seamounts, a potential source of tsunami generated by landslides? the hirondelle seamount, ne atlantic |
publisher |
Elsevier |
publishDate |
2016 |
url |
http://hdl.handle.net/10400.21/7136 https://doi.org/10.1016/j.margeo.2016.06.010 |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_relation |
http://ac.els-cdn.com/S0025322716301244/1-s2.0-S0025322716301244-main.pdf?_tid=dc493b4c-4777-11e7-9e9b-00000aacb362&acdnat=1496396758_c1a75ca6c31fd8f0312858710c73e46a OMIRA, R,; [et al] - Deep-water seamounts, a potential source of tsunami generated by landslides? The Hirondelle Seamount, NE Atlantic. Marine Geology. ISSN 0025-3227. Vol. 379 (2016), pp. 267-280 0025-3227 1872-6151 http://hdl.handle.net/10400.21/7136 doi:10.1016/j.margeo.2016.06.010 |
op_rights |
closedAccess |
op_doi |
https://doi.org/10.1016/j.margeo.2016.06.010 |
container_title |
Marine Geology |
container_volume |
379 |
container_start_page |
267 |
op_container_end_page |
280 |
_version_ |
1766138926607630336 |