Seismogenic sources in the Lower Tagus Area using geophysical data

Detalhes bibliográficos
Autor(a) principal: Pinto, Carlos C.
Data de Publicação: 2010
Outros Autores: Carvalho, João P. F., Costa, M., Catrapona, Afonso, Rabeh, Taha, Terrinha, Pedro, Henrique, Duarte, Borges, José, Caldeira, Bento, Cabral, João
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/3898
Resumo: The Lisbon and Lower Tagus Valley area have suffered the effect of historical earthquakes that caused important damages and loss of lives. Some of these earthquake sources are local but they are still poorly known due to the difficulty in finding geological outcrops, together with low-slip rates and erosion/sedimentation processes that erase surface ruptures. Identification of seismogenic sources capable of producing large earthquakes from low magnitude instrumental seismicity has also proved unreliable in other areas of the world. Therefore, for a proper assessment of seismogenic sources for seismic hazard purposes we have used recently reprocessed and reinterpreted seismic reflection, potential-field data and overlaid relocated epicentres. Here we present a revised structural interpretation of the area based on seismic data and a basement map produced by magnetic modelling, 2D Euler deconvolution and trend analysis. This basement map, which greatly enlarges the seismic coverage of the study area, has shown new insights into deep-seated structures of the Lower Tagus Valley area and their relationship with seismicity. The information from fault parameters collected in this work will also help to locate the sources of historical events such as the 1909 Benavente earthquake using finite-element strong-motion simulation and comparison with observed seismic intensities
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spelling Seismogenic sources in the Lower Tagus Area using geophysical dataGeophysics applied aplicadaGeophysics dataSeismologySeismicityLower Tagus AreaThe Lisbon and Lower Tagus Valley area have suffered the effect of historical earthquakes that caused important damages and loss of lives. Some of these earthquake sources are local but they are still poorly known due to the difficulty in finding geological outcrops, together with low-slip rates and erosion/sedimentation processes that erase surface ruptures. Identification of seismogenic sources capable of producing large earthquakes from low magnitude instrumental seismicity has also proved unreliable in other areas of the world. Therefore, for a proper assessment of seismogenic sources for seismic hazard purposes we have used recently reprocessed and reinterpreted seismic reflection, potential-field data and overlaid relocated epicentres. Here we present a revised structural interpretation of the area based on seismic data and a basement map produced by magnetic modelling, 2D Euler deconvolution and trend analysis. This basement map, which greatly enlarges the seismic coverage of the study area, has shown new insights into deep-seated structures of the Lower Tagus Valley area and their relationship with seismicity. The information from fault parameters collected in this work will also help to locate the sources of historical events such as the 1909 Benavente earthquake using finite-element strong-motion simulation and comparison with observed seismic intensitiesSociety of Petroleum Engineers2012-01-19T16:53:23Z2012-01-192010-06-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/3898http://hdl.handle.net/10174/3898engPinto, Carlos C.: Carvalho, João P. F.; Costa, M.; Catrapona, Afonso; Rabeh, Taha; Terrinha, Pedro; Duarte, Henrique; Borges, J. F.; Caldeira, B.; Cabral, João - Seismogenic sources in the Lower Tagus Area using geophysical data. In. 72nd EAGE Conference & Exhibition incorporating SPE EUROPEC 2010, Barcelona, Spain, 14-17 June 2010FISndndndndndndndjborges@uevora.ptbafcc@uevora,ptnd72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 - Incorporating SPE EUROPEC 2010249Pinto, Carlos C.Carvalho, João P. F.Costa, M.Catrapona, AfonsoRabeh, TahaTerrinha, PedroHenrique, DuarteBorges, JoséCaldeira, BentoCabral, Joãoinfo: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:RCAAP2024-01-03T18:41:21Zoai:dspace.uevora.pt:10174/3898Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:59:14.590361Repositório 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 Seismogenic sources in the Lower Tagus Area using geophysical data
title Seismogenic sources in the Lower Tagus Area using geophysical data
spellingShingle Seismogenic sources in the Lower Tagus Area using geophysical data
Pinto, Carlos C.
Geophysics applied aplicada
Geophysics data
Seismology
Seismicity
Lower Tagus Area
title_short Seismogenic sources in the Lower Tagus Area using geophysical data
title_full Seismogenic sources in the Lower Tagus Area using geophysical data
title_fullStr Seismogenic sources in the Lower Tagus Area using geophysical data
title_full_unstemmed Seismogenic sources in the Lower Tagus Area using geophysical data
title_sort Seismogenic sources in the Lower Tagus Area using geophysical data
author Pinto, Carlos C.
author_facet Pinto, Carlos C.
Carvalho, João P. F.
Costa, M.
Catrapona, Afonso
Rabeh, Taha
Terrinha, Pedro
Henrique, Duarte
Borges, José
Caldeira, Bento
Cabral, João
author_role author
author2 Carvalho, João P. F.
Costa, M.
Catrapona, Afonso
Rabeh, Taha
Terrinha, Pedro
Henrique, Duarte
Borges, José
Caldeira, Bento
Cabral, João
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Pinto, Carlos C.
Carvalho, João P. F.
Costa, M.
Catrapona, Afonso
Rabeh, Taha
Terrinha, Pedro
Henrique, Duarte
Borges, José
Caldeira, Bento
Cabral, João
dc.subject.por.fl_str_mv Geophysics applied aplicada
Geophysics data
Seismology
Seismicity
Lower Tagus Area
topic Geophysics applied aplicada
Geophysics data
Seismology
Seismicity
Lower Tagus Area
description The Lisbon and Lower Tagus Valley area have suffered the effect of historical earthquakes that caused important damages and loss of lives. Some of these earthquake sources are local but they are still poorly known due to the difficulty in finding geological outcrops, together with low-slip rates and erosion/sedimentation processes that erase surface ruptures. Identification of seismogenic sources capable of producing large earthquakes from low magnitude instrumental seismicity has also proved unreliable in other areas of the world. Therefore, for a proper assessment of seismogenic sources for seismic hazard purposes we have used recently reprocessed and reinterpreted seismic reflection, potential-field data and overlaid relocated epicentres. Here we present a revised structural interpretation of the area based on seismic data and a basement map produced by magnetic modelling, 2D Euler deconvolution and trend analysis. This basement map, which greatly enlarges the seismic coverage of the study area, has shown new insights into deep-seated structures of the Lower Tagus Valley area and their relationship with seismicity. The information from fault parameters collected in this work will also help to locate the sources of historical events such as the 1909 Benavente earthquake using finite-element strong-motion simulation and comparison with observed seismic intensities
publishDate 2010
dc.date.none.fl_str_mv 2010-06-01T00:00:00Z
2012-01-19T16:53:23Z
2012-01-19
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/10174/3898
http://hdl.handle.net/10174/3898
url http://hdl.handle.net/10174/3898
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Pinto, Carlos C.: Carvalho, João P. F.; Costa, M.; Catrapona, Afonso; Rabeh, Taha; Terrinha, Pedro; Duarte, Henrique; Borges, J. F.; Caldeira, B.; Cabral, João - Seismogenic sources in the Lower Tagus Area using geophysical data. In. 72nd EAGE Conference & Exhibition incorporating SPE EUROPEC 2010, Barcelona, Spain, 14-17 June 2010
FIS
nd
nd
nd
nd
nd
nd
nd
jborges@uevora.pt
bafcc@uevora,pt
nd
72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 - Incorporating SPE EUROPEC 2010
249
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Society of Petroleum Engineers
publisher.none.fl_str_mv Society of Petroleum Engineers
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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