Seismic site effects in Setúbal county (Portugal) using REMI technique

Detalhes bibliográficos
Autor(a) principal: Vicêncio, Henrique
Data de Publicação: 2022
Outros Autores: Teves-Costa, Paula, Sá Caetano, Paulo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/143204
Resumo: We wish to thank colleagues who helped during the field work: Afonso Loureiro, Andrés Gago, Carlos Graça, Inês Bruno, Joana Carvalho, João Bonacho, João Brissos, Luísa Rodrigues, Mónica Cabral and Pedro Rodrigues. We would also like to thank Daniel Vendas and all companies that provided geological and geotechnical data, as well as to the Setúbal Fire-Brigade and the Setúbal Municipal Civil Protection Service for all the support provided during this investigation. We wish to thank also to IDL – Instituto Dom Luiz, University of Lisbon for providing the equipment to carry out the ReMi tests.
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spelling Seismic site effects in Setúbal county (Portugal) using REMI techniqueSite effectsVS profilesVS30SetúbalWe wish to thank colleagues who helped during the field work: Afonso Loureiro, Andrés Gago, Carlos Graça, Inês Bruno, Joana Carvalho, João Bonacho, João Brissos, Luísa Rodrigues, Mónica Cabral and Pedro Rodrigues. We would also like to thank Daniel Vendas and all companies that provided geological and geotechnical data, as well as to the Setúbal Fire-Brigade and the Setúbal Municipal Civil Protection Service for all the support provided during this investigation. We wish to thank also to IDL – Instituto Dom Luiz, University of Lisbon for providing the equipment to carry out the ReMi tests.Setúbal is a county located in the Lisbon metropolitan area (Portugal) which has been hit by historical earthquakes that were responsible for high social and economic losses. The 1858 earthquake, with an epicentre located offshore just south of the Setúbal region, is a good example of an earthquake that caused high damage (IX-VIII MM) in this county. The main city of the region is Setúbal itself, an important and populated urban agglomeration with several industrial facilities very close by. The old city centre is mostly settled upon shallow geological units and taking into consideration the historical seismicity, it is important to examine the possible site effects that could occur during future earthquakes affecting the Setúbal region. The objectives of this study are therefore the characterisation of the seismic behaviour of Setubal's shallow geological formations and the evaluation of potential site effects. Shear wave velocity profiles were computed with the Refraction Microtremor (ReMi) method, spatial distribution of VS30 values was estimated and a map with the VS30 classification of soils according to the EC8 was produced. Spatial distributions of different data are presented and discussed:VS30 values, thickness of the shallow formations, top Pliocene surface, and results from Standard Penetration Tests (NSPT values). Numerical correlations between these parameters were established. Geotechnical characterisation was based on the analysis of 307 logs and 2950 Standard Penetration Tests. A total of 266 refraction microtremor measurements were performed obtaining VS profiles and VS30 values for 43 different sites. It was found that in Setúbal the majority of t heHolocene units belong to EC8 class C (180–360 m/s) but, in the areas where the thickness of shallow formations (TSF) is lower, the Holocene units may belong to class B (> 360 m/s). The spatial distribution of VS30 highlighted that the Plio Pleistocene, Miocene and Mesozoic areas show the best soil conditions corresponding to EC8 classes B and A. However, it was possible to identify a Plio Pleistocene area with VS30 varying between 232 and 355 m/s, therefore belonging to class C. This fact highlights that site effects studies should not be performed solely based on geological criteria, but it is essential to estimate S wave velocities (VS) in situ.GeoBioTec - Geobiociências, Geoengenharias e GeotecnologiasDCT - Departamento de Ciências da TerraRUNVicêncio, HenriqueTeves-Costa, PaulaSá Caetano, Paulo2022-08-23T22:17:58Z2022-032022-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article12application/pdfhttp://hdl.handle.net/10362/143204eng2666-8289PURE: 42728067https://doi.org/10.1016/j.ringps.2021.100037info: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:RCAAP2024-03-11T05:21:23Zoai:run.unl.pt:10362/143204Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:50:45.208376Repositório 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 Seismic site effects in Setúbal county (Portugal) using REMI technique
title Seismic site effects in Setúbal county (Portugal) using REMI technique
spellingShingle Seismic site effects in Setúbal county (Portugal) using REMI technique
Vicêncio, Henrique
Site effects
VS profiles
VS30
Setúbal
title_short Seismic site effects in Setúbal county (Portugal) using REMI technique
title_full Seismic site effects in Setúbal county (Portugal) using REMI technique
title_fullStr Seismic site effects in Setúbal county (Portugal) using REMI technique
title_full_unstemmed Seismic site effects in Setúbal county (Portugal) using REMI technique
title_sort Seismic site effects in Setúbal county (Portugal) using REMI technique
author Vicêncio, Henrique
author_facet Vicêncio, Henrique
Teves-Costa, Paula
Sá Caetano, Paulo
author_role author
author2 Teves-Costa, Paula
Sá Caetano, Paulo
author2_role author
author
dc.contributor.none.fl_str_mv GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias
DCT - Departamento de Ciências da Terra
RUN
dc.contributor.author.fl_str_mv Vicêncio, Henrique
Teves-Costa, Paula
Sá Caetano, Paulo
dc.subject.por.fl_str_mv Site effects
VS profiles
VS30
Setúbal
topic Site effects
VS profiles
VS30
Setúbal
description We wish to thank colleagues who helped during the field work: Afonso Loureiro, Andrés Gago, Carlos Graça, Inês Bruno, Joana Carvalho, João Bonacho, João Brissos, Luísa Rodrigues, Mónica Cabral and Pedro Rodrigues. We would also like to thank Daniel Vendas and all companies that provided geological and geotechnical data, as well as to the Setúbal Fire-Brigade and the Setúbal Municipal Civil Protection Service for all the support provided during this investigation. We wish to thank also to IDL – Instituto Dom Luiz, University of Lisbon for providing the equipment to carry out the ReMi tests.
publishDate 2022
dc.date.none.fl_str_mv 2022-08-23T22:17:58Z
2022-03
2022-03-01T00:00:00Z
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/10362/143204
url http://hdl.handle.net/10362/143204
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2666-8289
PURE: 42728067
https://doi.org/10.1016/j.ringps.2021.100037
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 12
application/pdf
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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