Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, Portugal

Detalhes bibliográficos
Autor(a) principal: Carvalho, J.
Data de Publicação: 2013
Outros Autores: Dias, R., Pinto, C., Cunha, T., Leote, J., Vilanova, S., Narciso, J., Borges, J. F., Ghose, R.J.G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/9213
Resumo: The capital city of Lisbon and the Lower Tagus Valley region of central Portugal mainland are located in the Eurasian plate about 350 Km from the approximately E-W oriented Eurasia-Africa plate boundary. It is characterized by low slip-rates (<0.4 mm/year) and a moderate seismicity, occasionally shaken by some important historical earthquakes causing significant damages and economical losses. The most well know damaging earthquakes occurred in 1344, 1531, 1755, 1909 and 1969. The seismic hazard evaluation and mitigation of the area is therefore of great importance to this densely populated area. This paper focuses the evaluation of P- wave and S-wave seismic velocities of the shallowest surface using seismic refraction data interpretation and in- situ lithostratigraphic studies to obtain geotechnical parameters such as Vp/Vs ratios and the Poisson coefficient, estimated to provide information for future site effect studies and preliminary VS30 and soil classification maps. The information will also be used to correct earthquake records since this information was also collected close to the location of seismological stations. The soil classification is based upon the European Code 8 for civil engineering which was carried out for land use planning and design of critical facilities. Hundreds of available boreholes drilled for engineering (with SPT data) and water supply were used to confirm layer thicknesses and lithologies at depth together with a detailed geological survey of each profile area. It is the first time VS30 maps and a soil classification based on geophysical and geotechnical parameters is attempted for this highly populated region.
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spelling Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, PortugalLower Tagus Valley BasinSeismic HazardThe capital city of Lisbon and the Lower Tagus Valley region of central Portugal mainland are located in the Eurasian plate about 350 Km from the approximately E-W oriented Eurasia-Africa plate boundary. It is characterized by low slip-rates (<0.4 mm/year) and a moderate seismicity, occasionally shaken by some important historical earthquakes causing significant damages and economical losses. The most well know damaging earthquakes occurred in 1344, 1531, 1755, 1909 and 1969. The seismic hazard evaluation and mitigation of the area is therefore of great importance to this densely populated area. This paper focuses the evaluation of P- wave and S-wave seismic velocities of the shallowest surface using seismic refraction data interpretation and in- situ lithostratigraphic studies to obtain geotechnical parameters such as Vp/Vs ratios and the Poisson coefficient, estimated to provide information for future site effect studies and preliminary VS30 and soil classification maps. The information will also be used to correct earthquake records since this information was also collected close to the location of seismological stations. The soil classification is based upon the European Code 8 for civil engineering which was carried out for land use planning and design of critical facilities. Hundreds of available boreholes drilled for engineering (with SPT data) and water supply were used to confirm layer thicknesses and lithologies at depth together with a detailed geological survey of each profile area. It is the first time VS30 maps and a soil classification based on geophysical and geotechnical parameters is attempted for this highly populated region.SBGf - Sociedade Brasileira de Geofísica2014-01-06T10:35:49Z2014-01-062013-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/9213http://hdl.handle.net/10174/9213engCarvalho, J., Dias, R., Pinto, C., Cunha, T., Leote, J., Vilanova, S., Narciso, J., Borges, J., Ghose, R., 2013, Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, Portugal, Thirteenth International Congress of the Brazilian Geophysical Society, 26-29 September, Rio de Janeiro (Brazil), 4201.ndndndndndndndjborges@uevora.ptnd393Carvalho, J.Dias, R.Pinto, C.Cunha, T.Leote, J.Vilanova, S.Narciso, J.Borges, J. F.Ghose, R.J.G.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:RCAAP2024-01-03T18:48:52Zoai:dspace.uevora.pt:10174/9213Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:02:29.150554Repositório 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 Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, Portugal
title Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, Portugal
spellingShingle Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, Portugal
Carvalho, J.
Lower Tagus Valley Basin
Seismic Hazard
title_short Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, Portugal
title_full Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, Portugal
title_fullStr Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, Portugal
title_full_unstemmed Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, Portugal
title_sort Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, Portugal
author Carvalho, J.
author_facet Carvalho, J.
Dias, R.
Pinto, C.
Cunha, T.
Leote, J.
Vilanova, S.
Narciso, J.
Borges, J. F.
Ghose, R.J.G.
author_role author
author2 Dias, R.
Pinto, C.
Cunha, T.
Leote, J.
Vilanova, S.
Narciso, J.
Borges, J. F.
Ghose, R.J.G.
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Carvalho, J.
Dias, R.
Pinto, C.
Cunha, T.
Leote, J.
Vilanova, S.
Narciso, J.
Borges, J. F.
Ghose, R.J.G.
dc.subject.por.fl_str_mv Lower Tagus Valley Basin
Seismic Hazard
topic Lower Tagus Valley Basin
Seismic Hazard
description The capital city of Lisbon and the Lower Tagus Valley region of central Portugal mainland are located in the Eurasian plate about 350 Km from the approximately E-W oriented Eurasia-Africa plate boundary. It is characterized by low slip-rates (<0.4 mm/year) and a moderate seismicity, occasionally shaken by some important historical earthquakes causing significant damages and economical losses. The most well know damaging earthquakes occurred in 1344, 1531, 1755, 1909 and 1969. The seismic hazard evaluation and mitigation of the area is therefore of great importance to this densely populated area. This paper focuses the evaluation of P- wave and S-wave seismic velocities of the shallowest surface using seismic refraction data interpretation and in- situ lithostratigraphic studies to obtain geotechnical parameters such as Vp/Vs ratios and the Poisson coefficient, estimated to provide information for future site effect studies and preliminary VS30 and soil classification maps. The information will also be used to correct earthquake records since this information was also collected close to the location of seismological stations. The soil classification is based upon the European Code 8 for civil engineering which was carried out for land use planning and design of critical facilities. Hundreds of available boreholes drilled for engineering (with SPT data) and water supply were used to confirm layer thicknesses and lithologies at depth together with a detailed geological survey of each profile area. It is the first time VS30 maps and a soil classification based on geophysical and geotechnical parameters is attempted for this highly populated region.
publishDate 2013
dc.date.none.fl_str_mv 2013-09-01T00:00:00Z
2014-01-06T10:35:49Z
2014-01-06
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/9213
http://hdl.handle.net/10174/9213
url http://hdl.handle.net/10174/9213
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Carvalho, J., Dias, R., Pinto, C., Cunha, T., Leote, J., Vilanova, S., Narciso, J., Borges, J., Ghose, R., 2013, Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, Portugal, Thirteenth International Congress of the Brazilian Geophysical Society, 26-29 September, Rio de Janeiro (Brazil), 4201.
nd
nd
nd
nd
nd
nd
nd
jborges@uevora.pt
nd
393
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dc.publisher.none.fl_str_mv SBGf - Sociedade Brasileira de Geofísica
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