Seismogenic sources in the Lower Tagus Area using geophysical data
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
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/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 |
id |
RCAP_8672b199a60cf2ca0ac521f0042c4ea0 |
---|---|
oai_identifier_str |
oai:dspace.uevora.pt:10174/3898 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
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 |
|
_version_ |
1799136475277688832 |