Microsismicidade da região do Algarve (sul de Portugal) e suas implicações sismotectónicas
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/3568 |
Resumo: | Previous studies based on Seismic Network Transfrontiere (1999/2003) and Temporary Seismic Network of Algarve (2006/2007) have identified a significant seismic activity in the Algarve region. The data obtained allowed to determine clusters of significant microseismicity in two major areas: the Monchique area (M; Fig.1) and the Almodôvar area (A; Fig.1). In the Monchique area the seismicity is characterized by low magnitude events (1<M<3.5) and is possible to define, from the epicentral distribution, some alignments corresponding to probable faults. Also in the NW part of Almodôvar, we were able to determine the trend of the epicentral distribution and in an analogous way it might be suggested an active fault, not yet characterized by geological studies. In this region, the trend of the seismicity, presents an alignment in the NE-SW direction, which becomes more evident with the relocation of the seismic events. This epicentral distribution is also confirmed by the principal tectonic faults and focal mechanisms already known from previous studies. In fact the “Almodôvar’s Fault” is the first seismic cartography obtained for this region. In addition, the first results of the Local Earthquake Tomography confirms the existence of two probable faults, for the Monchique region, with seismicity constrained from 5 km to 15 km depth. |
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Microsismicidade da região do Algarve (sul de Portugal) e suas implicações sismotectónicasSismicidade em PortugalFalhas activasPrevious studies based on Seismic Network Transfrontiere (1999/2003) and Temporary Seismic Network of Algarve (2006/2007) have identified a significant seismic activity in the Algarve region. The data obtained allowed to determine clusters of significant microseismicity in two major areas: the Monchique area (M; Fig.1) and the Almodôvar area (A; Fig.1). In the Monchique area the seismicity is characterized by low magnitude events (1<M<3.5) and is possible to define, from the epicentral distribution, some alignments corresponding to probable faults. Also in the NW part of Almodôvar, we were able to determine the trend of the epicentral distribution and in an analogous way it might be suggested an active fault, not yet characterized by geological studies. In this region, the trend of the seismicity, presents an alignment in the NE-SW direction, which becomes more evident with the relocation of the seismic events. This epicentral distribution is also confirmed by the principal tectonic faults and focal mechanisms already known from previous studies. In fact the “Almodôvar’s Fault” is the first seismic cartography obtained for this region. In addition, the first results of the Local Earthquake Tomography confirms the existence of two probable faults, for the Monchique region, with seismicity constrained from 5 km to 15 km depth.APMG- Associação Portuguesa de Meteorologia e Geofísica2012-01-16T10:20:14Z2012-01-162011-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/3568http://hdl.handle.net/10174/3568porsimnaonaondmourad@uevora.ptbafcc@uevora.ptjborges@uevora.ptndndaaraujo@uevora.pt249Rocha, JoãoBezzeghoud, MouradCaldeira, BentoBorges, JoséDias, NunoMatias, LuisAraujo, Alexandreinfo: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:RCAAP2024-01-03T18:40:55Zoai:dspace.uevora.pt:10174/3568Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:59:02.895757Repositório 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 |
Microsismicidade da região do Algarve (sul de Portugal) e suas implicações sismotectónicas |
title |
Microsismicidade da região do Algarve (sul de Portugal) e suas implicações sismotectónicas |
spellingShingle |
Microsismicidade da região do Algarve (sul de Portugal) e suas implicações sismotectónicas Rocha, João Sismicidade em Portugal Falhas activas |
title_short |
Microsismicidade da região do Algarve (sul de Portugal) e suas implicações sismotectónicas |
title_full |
Microsismicidade da região do Algarve (sul de Portugal) e suas implicações sismotectónicas |
title_fullStr |
Microsismicidade da região do Algarve (sul de Portugal) e suas implicações sismotectónicas |
title_full_unstemmed |
Microsismicidade da região do Algarve (sul de Portugal) e suas implicações sismotectónicas |
title_sort |
Microsismicidade da região do Algarve (sul de Portugal) e suas implicações sismotectónicas |
author |
Rocha, João |
author_facet |
Rocha, João Bezzeghoud, Mourad Caldeira, Bento Borges, José Dias, Nuno Matias, Luis Araujo, Alexandre |
author_role |
author |
author2 |
Bezzeghoud, Mourad Caldeira, Bento Borges, José Dias, Nuno Matias, Luis Araujo, Alexandre |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Rocha, João Bezzeghoud, Mourad Caldeira, Bento Borges, José Dias, Nuno Matias, Luis Araujo, Alexandre |
dc.subject.por.fl_str_mv |
Sismicidade em Portugal Falhas activas |
topic |
Sismicidade em Portugal Falhas activas |
description |
Previous studies based on Seismic Network Transfrontiere (1999/2003) and Temporary Seismic Network of Algarve (2006/2007) have identified a significant seismic activity in the Algarve region. The data obtained allowed to determine clusters of significant microseismicity in two major areas: the Monchique area (M; Fig.1) and the Almodôvar area (A; Fig.1). In the Monchique area the seismicity is characterized by low magnitude events (1<M<3.5) and is possible to define, from the epicentral distribution, some alignments corresponding to probable faults. Also in the NW part of Almodôvar, we were able to determine the trend of the epicentral distribution and in an analogous way it might be suggested an active fault, not yet characterized by geological studies. In this region, the trend of the seismicity, presents an alignment in the NE-SW direction, which becomes more evident with the relocation of the seismic events. This epicentral distribution is also confirmed by the principal tectonic faults and focal mechanisms already known from previous studies. In fact the “Almodôvar’s Fault” is the first seismic cartography obtained for this region. In addition, the first results of the Local Earthquake Tomography confirms the existence of two probable faults, for the Monchique region, with seismicity constrained from 5 km to 15 km depth. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-01-01T00:00:00Z 2012-01-16T10:20:14Z 2012-01-16 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/3568 http://hdl.handle.net/10174/3568 |
url |
http://hdl.handle.net/10174/3568 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
sim nao nao nd mourad@uevora.pt bafcc@uevora.pt jborges@uevora.pt nd nd aaraujo@uevora.pt 249 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
APMG- Associação Portuguesa de Meteorologia e Geofísica |
publisher.none.fl_str_mv |
APMG- Associação Portuguesa de Meteorologia e Geofísica |
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 |
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1799136473042124800 |