Upper crustal structure of Madeira Island revealed from ambient noise tomography

Detalhes bibliográficos
Autor(a) principal: Matos, Catarina
Data de Publicação: 2015
Outros Autores: Silveira, Graça, Matias, Luís, Caldeira, Rita, Ribeiro, Maria Luísa, Dias, Nuno, Krüger, Frank, Bento dos Santos, Telmo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.9/3027
Resumo: We present the first image of the Madeira upper crustal structure, using ambient seismic noise tomography. 16 months of ambient noise, recorded in a dense network of 26 seismometers deployed across Madeira, allowed reconstructing Rayleigh wave Green's functions between receivers. Dispersion analysis was performed in the short period band from 1.0 to 4.0 s. Group velocity measurements were regionalized to obtain 2D tomographic images, with a lateral resolution of 2.0 km in central Madeira. Afterwards, the dispersion curves, extracted from each cell of the 2D group velocity maps, were inverted as a function of depth to obtain a 3D shear wave velocity model of the upper crust, from the surface to a depth of 2.0 km. The obtained 3D velocity model reveals features throughout the island that correlates well with surface geology and island evolution.
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spelling Upper crustal structure of Madeira Island revealed from ambient noise tomographyEstrutura geológicaTomografia sísmicaIlha da Madeira (Arquipélago da Madeira, Portugal)Arquipélago da Madeira (Portugal)We present the first image of the Madeira upper crustal structure, using ambient seismic noise tomography. 16 months of ambient noise, recorded in a dense network of 26 seismometers deployed across Madeira, allowed reconstructing Rayleigh wave Green's functions between receivers. Dispersion analysis was performed in the short period band from 1.0 to 4.0 s. Group velocity measurements were regionalized to obtain 2D tomographic images, with a lateral resolution of 2.0 km in central Madeira. Afterwards, the dispersion curves, extracted from each cell of the 2D group velocity maps, were inverted as a function of depth to obtain a 3D shear wave velocity model of the upper crust, from the surface to a depth of 2.0 km. The obtained 3D velocity model reveals features throughout the island that correlates well with surface geology and island evolution.ElsevierRepositório do LNEGMatos, CatarinaSilveira, GraçaMatias, LuísCaldeira, RitaRibeiro, Maria LuísaDias, NunoKrüger, FrankBento dos Santos, Telmo2016-06-29T21:00:26Z2015-062015-06-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/3027engMatos, Catarina... [et al.] - Upper crustal structure of Madeira Island revealed from ambient noise tomography. In: Journal of Volcanology and Geothermal Research, 298 (1 June 2015), p. 136-1450377-0273http://dx.doi.org./10.1016/j.jvolgeores.2015.03.017info: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:RCAAP2023-04-02T05:41:23Zoai:repositorio.lneg.pt:10400.9/3027Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:36:11.240130Repositório 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 Upper crustal structure of Madeira Island revealed from ambient noise tomography
title Upper crustal structure of Madeira Island revealed from ambient noise tomography
spellingShingle Upper crustal structure of Madeira Island revealed from ambient noise tomography
Matos, Catarina
Estrutura geológica
Tomografia sísmica
Ilha da Madeira (Arquipélago da Madeira, Portugal)
Arquipélago da Madeira (Portugal)
title_short Upper crustal structure of Madeira Island revealed from ambient noise tomography
title_full Upper crustal structure of Madeira Island revealed from ambient noise tomography
title_fullStr Upper crustal structure of Madeira Island revealed from ambient noise tomography
title_full_unstemmed Upper crustal structure of Madeira Island revealed from ambient noise tomography
title_sort Upper crustal structure of Madeira Island revealed from ambient noise tomography
author Matos, Catarina
author_facet Matos, Catarina
Silveira, Graça
Matias, Luís
Caldeira, Rita
Ribeiro, Maria Luísa
Dias, Nuno
Krüger, Frank
Bento dos Santos, Telmo
author_role author
author2 Silveira, Graça
Matias, Luís
Caldeira, Rita
Ribeiro, Maria Luísa
Dias, Nuno
Krüger, Frank
Bento dos Santos, Telmo
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório do LNEG
dc.contributor.author.fl_str_mv Matos, Catarina
Silveira, Graça
Matias, Luís
Caldeira, Rita
Ribeiro, Maria Luísa
Dias, Nuno
Krüger, Frank
Bento dos Santos, Telmo
dc.subject.por.fl_str_mv Estrutura geológica
Tomografia sísmica
Ilha da Madeira (Arquipélago da Madeira, Portugal)
Arquipélago da Madeira (Portugal)
topic Estrutura geológica
Tomografia sísmica
Ilha da Madeira (Arquipélago da Madeira, Portugal)
Arquipélago da Madeira (Portugal)
description We present the first image of the Madeira upper crustal structure, using ambient seismic noise tomography. 16 months of ambient noise, recorded in a dense network of 26 seismometers deployed across Madeira, allowed reconstructing Rayleigh wave Green's functions between receivers. Dispersion analysis was performed in the short period band from 1.0 to 4.0 s. Group velocity measurements were regionalized to obtain 2D tomographic images, with a lateral resolution of 2.0 km in central Madeira. Afterwards, the dispersion curves, extracted from each cell of the 2D group velocity maps, were inverted as a function of depth to obtain a 3D shear wave velocity model of the upper crust, from the surface to a depth of 2.0 km. The obtained 3D velocity model reveals features throughout the island that correlates well with surface geology and island evolution.
publishDate 2015
dc.date.none.fl_str_mv 2015-06
2015-06-01T00:00:00Z
2016-06-29T21:00:26Z
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/10400.9/3027
url http://hdl.handle.net/10400.9/3027
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Matos, Catarina... [et al.] - Upper crustal structure of Madeira Island revealed from ambient noise tomography. In: Journal of Volcanology and Geothermal Research, 298 (1 June 2015), p. 136-145
0377-0273
http://dx.doi.org./10.1016/j.jvolgeores.2015.03.017
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
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