Improving the Knowledge on Seismogenic Sources in the Lower Tagus Valley for Seismic Hazard Purposes

Detalhes bibliográficos
Autor(a) principal: Carvalho, J.
Data de Publicação: 2012
Outros Autores: Pinto, C. C., Rabeh, T, Borges, J. F., Dias, R., Costa, M., Duarte, H., Terrinha, P., Caldeira, B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/7510
Resumo: The Lower Tagus Valley, that includes the metropolitan area of Lisbon, has been struck by several earthquakes which produced significant material damage and loss of lives. Their exact location remains unknown. Our goal is to shed some light into the seismogenic sources in the area using seismic reflection and geological data. In areas with no seismic coverage, potential-field data interpretation was carried out. Seismicity was overlaid to the potential seismogenic structures and high-resolution data was acquired in order to confirm which structures have been active into the Quaternary. Three major fault-zones affecting the Neogene were identified: V. F. Xira, Samora-Alcochete and Pinhal Novo. For the first fault, strong evidences suggest it is active. The other two fault-zones and other structures previously unknown can be correlated with several epicentres. Empirical relationships between maximum moment magnitude and fault area indicate that MW > 6.5 earthquakes can be expected for the larger structures.
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spelling Improving the Knowledge on Seismogenic Sources in the Lower Tagus Valley for Seismic Hazard PurposesLisbon, earthquakesfaultsseismicpotential-fieldThe Lower Tagus Valley, that includes the metropolitan area of Lisbon, has been struck by several earthquakes which produced significant material damage and loss of lives. Their exact location remains unknown. Our goal is to shed some light into the seismogenic sources in the area using seismic reflection and geological data. In areas with no seismic coverage, potential-field data interpretation was carried out. Seismicity was overlaid to the potential seismogenic structures and high-resolution data was acquired in order to confirm which structures have been active into the Quaternary. Three major fault-zones affecting the Neogene were identified: V. F. Xira, Samora-Alcochete and Pinhal Novo. For the first fault, strong evidences suggest it is active. The other two fault-zones and other structures previously unknown can be correlated with several epicentres. Empirical relationships between maximum moment magnitude and fault area indicate that MW > 6.5 earthquakes can be expected for the larger structures.Portuguese Society for Earthquake Engineering2013-01-21T12:18:56Z2013-01-212012-09-24T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/7510http://hdl.handle.net/10174/7510engCarvalho, J., C. C. Pinto, T. Rabeh, J. F. Borges, R. Dias, M. Costa, H. Duarte, P. Terrinha, B. Caldeira, 2012, Improving the Knowledge on Seismogenic Sources in the Lower Tagus Valley for Seismic Hazard Purposes, , proceddings of the 15 World Conference on Earthquake Engineering, Lisbon 24 to 28 Setember 2012, 10pjoao.carvalho@lneg.ptndndjborges@uevora.ptrdias@uevora.ptndndndbafcc@uevora.pt393Carvalho, J.Pinto, C. C.Rabeh, TBorges, J. F.Dias, R.Costa, M.Duarte, H.Terrinha, P.Caldeira, B.info: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:RCAAP2024-01-03T18:47:58Zoai:dspace.uevora.pt:10174/7510Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:02:06.364490Repositório 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 Improving the Knowledge on Seismogenic Sources in the Lower Tagus Valley for Seismic Hazard Purposes
title Improving the Knowledge on Seismogenic Sources in the Lower Tagus Valley for Seismic Hazard Purposes
spellingShingle Improving the Knowledge on Seismogenic Sources in the Lower Tagus Valley for Seismic Hazard Purposes
Carvalho, J.
Lisbon, earthquakes
faults
seismic
potential-field
title_short Improving the Knowledge on Seismogenic Sources in the Lower Tagus Valley for Seismic Hazard Purposes
title_full Improving the Knowledge on Seismogenic Sources in the Lower Tagus Valley for Seismic Hazard Purposes
title_fullStr Improving the Knowledge on Seismogenic Sources in the Lower Tagus Valley for Seismic Hazard Purposes
title_full_unstemmed Improving the Knowledge on Seismogenic Sources in the Lower Tagus Valley for Seismic Hazard Purposes
title_sort Improving the Knowledge on Seismogenic Sources in the Lower Tagus Valley for Seismic Hazard Purposes
author Carvalho, J.
author_facet Carvalho, J.
Pinto, C. C.
Rabeh, T
Borges, J. F.
Dias, R.
Costa, M.
Duarte, H.
Terrinha, P.
Caldeira, B.
author_role author
author2 Pinto, C. C.
Rabeh, T
Borges, J. F.
Dias, R.
Costa, M.
Duarte, H.
Terrinha, P.
Caldeira, B.
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Carvalho, J.
Pinto, C. C.
Rabeh, T
Borges, J. F.
Dias, R.
Costa, M.
Duarte, H.
Terrinha, P.
Caldeira, B.
dc.subject.por.fl_str_mv Lisbon, earthquakes
faults
seismic
potential-field
topic Lisbon, earthquakes
faults
seismic
potential-field
description The Lower Tagus Valley, that includes the metropolitan area of Lisbon, has been struck by several earthquakes which produced significant material damage and loss of lives. Their exact location remains unknown. Our goal is to shed some light into the seismogenic sources in the area using seismic reflection and geological data. In areas with no seismic coverage, potential-field data interpretation was carried out. Seismicity was overlaid to the potential seismogenic structures and high-resolution data was acquired in order to confirm which structures have been active into the Quaternary. Three major fault-zones affecting the Neogene were identified: V. F. Xira, Samora-Alcochete and Pinhal Novo. For the first fault, strong evidences suggest it is active. The other two fault-zones and other structures previously unknown can be correlated with several epicentres. Empirical relationships between maximum moment magnitude and fault area indicate that MW > 6.5 earthquakes can be expected for the larger structures.
publishDate 2012
dc.date.none.fl_str_mv 2012-09-24T00:00:00Z
2013-01-21T12:18:56Z
2013-01-21
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/10174/7510
http://hdl.handle.net/10174/7510
url http://hdl.handle.net/10174/7510
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Carvalho, J., C. C. Pinto, T. Rabeh, J. F. Borges, R. Dias, M. Costa, H. Duarte, P. Terrinha, B. Caldeira, 2012, Improving the Knowledge on Seismogenic Sources in the Lower Tagus Valley for Seismic Hazard Purposes, , proceddings of the 15 World Conference on Earthquake Engineering, Lisbon 24 to 28 Setember 2012, 10p
joao.carvalho@lneg.pt
nd
nd
jborges@uevora.pt
rdias@uevora.pt
nd
nd
nd
bafcc@uevora.pt
393
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Portuguese Society for Earthquake Engineering
publisher.none.fl_str_mv Portuguese Society for Earthquake Engineering
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
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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