Reevaluation of the 11 november 1858 earthquake and tsunami in Setubal: a contribution to the seismic and tsunami hazard assessment in Southwest Iberia
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.21/14359 |
Resumo: | The southwest Iberian Margin (SWIM) hosted a series of tsunamigenic earthquakes. However, strong magnitude earthquakes M > 7.0 are scarce and geological and geophysical evidence suggest that slow deformation occurs on a large area without a discrete plate boundary. The reanalysis of this event is crucial because of its location in a possible transition zone between the diffuse plate boundary and the stable continent regime. The 11 November 1858 earthquake in Setubal, Portugal, with an estimated M similar to 7, ruined a large part of the city and was felt all over Portugal and large parts of the Iberian Peninsula. Earlier studies suggest an epicentre close to the shore, less than 50 km away, and there exists a description of a tsunami in Setubal. We use macroseismic intensities and present a reevaluation of the event parameters: depth, epicentre, magnitude, and fault orientation. We select the candidate faults according to the epicentral area and plate kinematics and use scaling laws for the magnitude range. We use tsunami numerical modelling to check the tsunamigenic potential of the event. Finally, we compute the tsunami propagation and inundation for Setubal for seven candidate scenarios and analyze waveform data obtained at virtual tide gauges. Our results favour an offshore inverse fault compatible with the tsunami observation corresponding to a reverse fault with a 40 degrees strike angle at 13 km depth and a magnitude range of 6.8 +/- 0.3. |
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Reevaluation of the 11 november 1858 earthquake and tsunami in Setubal: a contribution to the seismic and tsunami hazard assessment in Southwest IberiaMacroseismic analysisNumerical tsunami modellingHistoric earthquakesEarthquake parametersPaleoDEMThe southwest Iberian Margin (SWIM) hosted a series of tsunamigenic earthquakes. However, strong magnitude earthquakes M > 7.0 are scarce and geological and geophysical evidence suggest that slow deformation occurs on a large area without a discrete plate boundary. The reanalysis of this event is crucial because of its location in a possible transition zone between the diffuse plate boundary and the stable continent regime. The 11 November 1858 earthquake in Setubal, Portugal, with an estimated M similar to 7, ruined a large part of the city and was felt all over Portugal and large parts of the Iberian Peninsula. Earlier studies suggest an epicentre close to the shore, less than 50 km away, and there exists a description of a tsunami in Setubal. We use macroseismic intensities and present a reevaluation of the event parameters: depth, epicentre, magnitude, and fault orientation. We select the candidate faults according to the epicentral area and plate kinematics and use scaling laws for the magnitude range. We use tsunami numerical modelling to check the tsunamigenic potential of the event. Finally, we compute the tsunami propagation and inundation for Setubal for seven candidate scenarios and analyze waveform data obtained at virtual tide gauges. Our results favour an offshore inverse fault compatible with the tsunami observation corresponding to a reverse fault with a 40 degrees strike angle at 13 km depth and a magnitude range of 6.8 +/- 0.3.SpringerRCIPLWronna, MartinBaptista, Maria Ana Carvalho VianaMIRANDA, JORGE MIGUEL2022-03-02T14:58:03Z2021-122021-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/14359engWRONNA, Martin; BAPTISTA, Maria Ana; MIRANDA, Jorge Miguel – Reevaluation of the 11 november 1858 earthquake and tsunami in Setubal: a contribution to the seismic and tsunami hazard assessment in Southwest Iberia. Pure and Applied Geophysics. ISSN 0033-4553. Vol. 178, N.º 12, SI (2021), pp. 4717-4742.0033-455310.1007/s00024-021-02885-x1420-9136metadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T10:10:25Zoai:repositorio.ipl.pt:10400.21/14359Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:22:10.723889Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Reevaluation of the 11 november 1858 earthquake and tsunami in Setubal: a contribution to the seismic and tsunami hazard assessment in Southwest Iberia |
title |
Reevaluation of the 11 november 1858 earthquake and tsunami in Setubal: a contribution to the seismic and tsunami hazard assessment in Southwest Iberia |
spellingShingle |
Reevaluation of the 11 november 1858 earthquake and tsunami in Setubal: a contribution to the seismic and tsunami hazard assessment in Southwest Iberia Wronna, Martin Macroseismic analysis Numerical tsunami modelling Historic earthquakes Earthquake parameters PaleoDEM |
title_short |
Reevaluation of the 11 november 1858 earthquake and tsunami in Setubal: a contribution to the seismic and tsunami hazard assessment in Southwest Iberia |
title_full |
Reevaluation of the 11 november 1858 earthquake and tsunami in Setubal: a contribution to the seismic and tsunami hazard assessment in Southwest Iberia |
title_fullStr |
Reevaluation of the 11 november 1858 earthquake and tsunami in Setubal: a contribution to the seismic and tsunami hazard assessment in Southwest Iberia |
title_full_unstemmed |
Reevaluation of the 11 november 1858 earthquake and tsunami in Setubal: a contribution to the seismic and tsunami hazard assessment in Southwest Iberia |
title_sort |
Reevaluation of the 11 november 1858 earthquake and tsunami in Setubal: a contribution to the seismic and tsunami hazard assessment in Southwest Iberia |
author |
Wronna, Martin |
author_facet |
Wronna, Martin Baptista, Maria Ana Carvalho Viana MIRANDA, JORGE MIGUEL |
author_role |
author |
author2 |
Baptista, Maria Ana Carvalho Viana MIRANDA, JORGE MIGUEL |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
RCIPL |
dc.contributor.author.fl_str_mv |
Wronna, Martin Baptista, Maria Ana Carvalho Viana MIRANDA, JORGE MIGUEL |
dc.subject.por.fl_str_mv |
Macroseismic analysis Numerical tsunami modelling Historic earthquakes Earthquake parameters PaleoDEM |
topic |
Macroseismic analysis Numerical tsunami modelling Historic earthquakes Earthquake parameters PaleoDEM |
description |
The southwest Iberian Margin (SWIM) hosted a series of tsunamigenic earthquakes. However, strong magnitude earthquakes M > 7.0 are scarce and geological and geophysical evidence suggest that slow deformation occurs on a large area without a discrete plate boundary. The reanalysis of this event is crucial because of its location in a possible transition zone between the diffuse plate boundary and the stable continent regime. The 11 November 1858 earthquake in Setubal, Portugal, with an estimated M similar to 7, ruined a large part of the city and was felt all over Portugal and large parts of the Iberian Peninsula. Earlier studies suggest an epicentre close to the shore, less than 50 km away, and there exists a description of a tsunami in Setubal. We use macroseismic intensities and present a reevaluation of the event parameters: depth, epicentre, magnitude, and fault orientation. We select the candidate faults according to the epicentral area and plate kinematics and use scaling laws for the magnitude range. We use tsunami numerical modelling to check the tsunamigenic potential of the event. Finally, we compute the tsunami propagation and inundation for Setubal for seven candidate scenarios and analyze waveform data obtained at virtual tide gauges. Our results favour an offshore inverse fault compatible with the tsunami observation corresponding to a reverse fault with a 40 degrees strike angle at 13 km depth and a magnitude range of 6.8 +/- 0.3. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12 2021-12-01T00:00:00Z 2022-03-02T14:58:03Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.21/14359 |
url |
http://hdl.handle.net/10400.21/14359 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
WRONNA, Martin; BAPTISTA, Maria Ana; MIRANDA, Jorge Miguel – Reevaluation of the 11 november 1858 earthquake and tsunami in Setubal: a contribution to the seismic and tsunami hazard assessment in Southwest Iberia. Pure and Applied Geophysics. ISSN 0033-4553. Vol. 178, N.º 12, SI (2021), pp. 4717-4742. 0033-4553 10.1007/s00024-021-02885-x 1420-9136 |
dc.rights.driver.fl_str_mv |
metadata only access info:eu-repo/semantics/openAccess |
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metadata only access |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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