Vs30 estimation using ambient vibrations and seismic refraction experiments - Application to the lower Tagus Valley (Portugal)
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/9222 |
Resumo: | The town of Lisbon has been affected by several strong earthquakes in the past originated either offshore or inland. The main inland seismogenic zone is the Lower Tagus Valley (LTV) region oriented NNE-SSW and reaching the northern part of Lisbon at its southern end. It is composed by a system of faults mainly oriented according to the valley trend, but the identification of the particular seismogenic structures able to produce large earthquakes are still under debate. The strongest reported event was the January 31st, 1531 earthquake (Mw = 7.0) that produced large damage in the southern part of the valley, in particular in Lisbon. In recent years the seismic activity in the LTV is characterised by several small earthquakes. The last strong earthquake occurred on April 23rd, 1909 (Mw = 6.1) and destroyed several small towns located in the valley. Due to the concentration of economic and industrial facilities and population density, this region presents high seismic risk in the Portuguese context. Besides, this region can be also affected by large offshore earthquakes, as the 1755 earthquake which source is located southern of Portugal mainland, in the Atlantic Ocean, about 250 km far from Lisbon. In order to estimate soil ground motion associated to different seismic sources, a map of Vs30 is need. We present here a methodology to estimate Vs30 based on ambient vibrations surveys (single-station and arrays measurements), seismic refraction experiments and geologic and geotechnical information. This work was partially financed by the Portuguese project PTDC/CTE-GIX/102245/2008 NEFITAG - Strong ground motion and near field effects in the Lower Tagus Valley Region, and the Spanish funded Complementary Action CGL2010-11831-E Identificacion de efectos de sitio en los registros de intensidad sismica en Iberia. |
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Vs30 estimation using ambient vibrations and seismic refraction experiments - Application to the lower Tagus Valley (Portugal)Lower Tagus Valley BasinVS30The town of Lisbon has been affected by several strong earthquakes in the past originated either offshore or inland. The main inland seismogenic zone is the Lower Tagus Valley (LTV) region oriented NNE-SSW and reaching the northern part of Lisbon at its southern end. It is composed by a system of faults mainly oriented according to the valley trend, but the identification of the particular seismogenic structures able to produce large earthquakes are still under debate. The strongest reported event was the January 31st, 1531 earthquake (Mw = 7.0) that produced large damage in the southern part of the valley, in particular in Lisbon. In recent years the seismic activity in the LTV is characterised by several small earthquakes. The last strong earthquake occurred on April 23rd, 1909 (Mw = 6.1) and destroyed several small towns located in the valley. Due to the concentration of economic and industrial facilities and population density, this region presents high seismic risk in the Portuguese context. Besides, this region can be also affected by large offshore earthquakes, as the 1755 earthquake which source is located southern of Portugal mainland, in the Atlantic Ocean, about 250 km far from Lisbon. In order to estimate soil ground motion associated to different seismic sources, a map of Vs30 is need. We present here a methodology to estimate Vs30 based on ambient vibrations surveys (single-station and arrays measurements), seismic refraction experiments and geologic and geotechnical information. This work was partially financed by the Portuguese project PTDC/CTE-GIX/102245/2008 NEFITAG - Strong ground motion and near field effects in the Lower Tagus Valley Region, and the Spanish funded Complementary Action CGL2010-11831-E Identificacion de efectos de sitio en los registros de intensidad sismica en Iberia.AHS - IAPSO - IASPEI. IUGG Joint Assembly Gothenburg 20132014-01-06T11:48:58Z2014-01-062013-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/9222http://hdl.handle.net/10174/9222engTeves-Costa, P., Rodrigues, I., Torres, R.J.G., Carvalho, J., Almeida, I.M., Borges, J.F., Vs30 estimation using ambient vibrations and seismic refraction experiments - Application to the Lower Tagus Valley (Portugal), Abstracts of the Joint Assembly IAHS-IAPSO-IAPSEI, 22-26 July, Gotemburg (Sweden).simnaonaondndndndndnd393Teves-Costa, PRodrigues, I.Torres, R.J.G.Carvalho, J.Almeida, I.M.Borges, J. F.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:RCAAP2024-01-03T18:50:56Zoai:dspace.uevora.pt:10174/9222Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:03:18.938021Repositório 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 |
Vs30 estimation using ambient vibrations and seismic refraction experiments - Application to the lower Tagus Valley (Portugal) |
title |
Vs30 estimation using ambient vibrations and seismic refraction experiments - Application to the lower Tagus Valley (Portugal) |
spellingShingle |
Vs30 estimation using ambient vibrations and seismic refraction experiments - Application to the lower Tagus Valley (Portugal) Teves-Costa, P Lower Tagus Valley Basin VS30 |
title_short |
Vs30 estimation using ambient vibrations and seismic refraction experiments - Application to the lower Tagus Valley (Portugal) |
title_full |
Vs30 estimation using ambient vibrations and seismic refraction experiments - Application to the lower Tagus Valley (Portugal) |
title_fullStr |
Vs30 estimation using ambient vibrations and seismic refraction experiments - Application to the lower Tagus Valley (Portugal) |
title_full_unstemmed |
Vs30 estimation using ambient vibrations and seismic refraction experiments - Application to the lower Tagus Valley (Portugal) |
title_sort |
Vs30 estimation using ambient vibrations and seismic refraction experiments - Application to the lower Tagus Valley (Portugal) |
author |
Teves-Costa, P |
author_facet |
Teves-Costa, P Rodrigues, I. Torres, R.J.G. Carvalho, J. Almeida, I.M. Borges, J. F. |
author_role |
author |
author2 |
Rodrigues, I. Torres, R.J.G. Carvalho, J. Almeida, I.M. Borges, J. F. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Teves-Costa, P Rodrigues, I. Torres, R.J.G. Carvalho, J. Almeida, I.M. Borges, J. F. |
dc.subject.por.fl_str_mv |
Lower Tagus Valley Basin VS30 |
topic |
Lower Tagus Valley Basin VS30 |
description |
The town of Lisbon has been affected by several strong earthquakes in the past originated either offshore or inland. The main inland seismogenic zone is the Lower Tagus Valley (LTV) region oriented NNE-SSW and reaching the northern part of Lisbon at its southern end. It is composed by a system of faults mainly oriented according to the valley trend, but the identification of the particular seismogenic structures able to produce large earthquakes are still under debate. The strongest reported event was the January 31st, 1531 earthquake (Mw = 7.0) that produced large damage in the southern part of the valley, in particular in Lisbon. In recent years the seismic activity in the LTV is characterised by several small earthquakes. The last strong earthquake occurred on April 23rd, 1909 (Mw = 6.1) and destroyed several small towns located in the valley. Due to the concentration of economic and industrial facilities and population density, this region presents high seismic risk in the Portuguese context. Besides, this region can be also affected by large offshore earthquakes, as the 1755 earthquake which source is located southern of Portugal mainland, in the Atlantic Ocean, about 250 km far from Lisbon. In order to estimate soil ground motion associated to different seismic sources, a map of Vs30 is need. We present here a methodology to estimate Vs30 based on ambient vibrations surveys (single-station and arrays measurements), seismic refraction experiments and geologic and geotechnical information. This work was partially financed by the Portuguese project PTDC/CTE-GIX/102245/2008 NEFITAG - Strong ground motion and near field effects in the Lower Tagus Valley Region, and the Spanish funded Complementary Action CGL2010-11831-E Identificacion de efectos de sitio en los registros de intensidad sismica en Iberia. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-07-01T00:00:00Z 2014-01-06T11:48:58Z 2014-01-06 |
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/10174/9222 http://hdl.handle.net/10174/9222 |
url |
http://hdl.handle.net/10174/9222 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Teves-Costa, P., Rodrigues, I., Torres, R.J.G., Carvalho, J., Almeida, I.M., Borges, J.F., Vs30 estimation using ambient vibrations and seismic refraction experiments - Application to the Lower Tagus Valley (Portugal), Abstracts of the Joint Assembly IAHS-IAPSO-IAPSEI, 22-26 July, Gotemburg (Sweden). sim nao nao nd nd nd nd nd nd 393 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
AHS - IAPSO - IASPEI. IUGG Joint Assembly Gothenburg 2013 |
publisher.none.fl_str_mv |
AHS - IAPSO - IASPEI. IUGG Joint Assembly Gothenburg 2013 |
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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1799136516590534656 |