Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise

Detalhes bibliográficos
Autor(a) principal: Silveira, Graça
Data de Publicação: 2022
Outros Autores: Dias, Nuno Afonso, Kiselev, Sergey, Stutzmann, Eleonore, Custódio, Susana, Schimmel, Martin
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10451/56730
Resumo: This is a pre-copyedited, author-produced PDF of an article accepted for publication in Geophysical Journal International following peer review. The version of record Graça Silveira, Nuno Afonso Dias, Sergey Kiselev, Eleonore Stutzmann, Susana Custódio, Martin Schimmel, Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise, Geophysical Journal International, Volume 230, Issue 2, August 2022, Pages 1106–1120, https://doi.org/10.1093/gji/ggac106, is available online at: https://academic.oup.com/gji/article-abstract/230/2/1106/6550028?redirectedFrom=fulltext
id RCAP_22dcb913a62ab842698062832a1b4dfc
oai_identifier_str oai:repositorio.ul.pt:10451/56730
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noiseCrustal imagingSeismic interferometrySeismic tomographySurface waves and free oscillationsCrustal structureThis is a pre-copyedited, author-produced PDF of an article accepted for publication in Geophysical Journal International following peer review. The version of record Graça Silveira, Nuno Afonso Dias, Sergey Kiselev, Eleonore Stutzmann, Susana Custódio, Martin Schimmel, Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise, Geophysical Journal International, Volume 230, Issue 2, August 2022, Pages 1106–1120, https://doi.org/10.1093/gji/ggac106, is available online at: https://academic.oup.com/gji/article-abstract/230/2/1106/6550028?redirectedFrom=fulltextWe present a new high-resolution 3-D shear wave velocity (Vs) model of the crust and uppermost mantle beneath Portugal, inferred from ambient seismic noise tomography. We use broad-band seismic data from a dense temporary deployment covering the entire Portuguese mainland between 2010 and 2012 in the scope of the WILAS project. Vertical component data are processed using phase correlation and phase weighted stack to obtain empirical Green functions (EGFs) for 2016 station pairs. Further, we use a random sampling and subset stacking strategy to measure robust Rayleigh-wave group velocities in the period range 7–30 s and associated uncertainties. The tomographic inversion is performed in two steps: First, we determine group-velocity lateral variations for each period. Next, we invert them at each grid point using a new trans-dimensional inversion scheme to obtain the 3-D shear wave velocity model. The final 3-D model extends from the upper crust (5 km) down to the uppermost mantle (60 km) and has a lateral resolution of ∼50 km. In the upper and middle crusts, the Vs anomaly pattern matches the tectonic units of the Variscan Massif and Alpine basins. The transition between the Lusitanian Basin and the Ossa Morena Zone is marked by a contrast between moderate- and high-velocity anomalies, in addition to two arched earthquake lineations. Some faults, namely, the Manteigas–Vilariça–Bragança fault and the Porto–Tomar–Ferreira do Alentejo fault, have a clear signature from the upper crust down to the uppermost mantle (60 km). Our 3-D shear wave velocity model offers new insights into the continuation of the main tectonic units at depth and contributes to better understanding the seismicity of Portugal.Oxford University PressRepositório da Universidade de LisboaSilveira, GraçaDias, Nuno AfonsoKiselev, SergeyStutzmann, EleonoreCustódio, SusanaSchimmel, Martin2023-03-21T10:47:53Z2022-04-172022-04-17T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10451/56730engGraça Silveira, Nuno Afonso Dias, Sergey Kiselev, Eleonore Stutzmann, Susana Custódio, Martin Schimmel, Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise, Geophysical Journal International, Volume 230, Issue 2, August 2022, Pages 1106–1120, https://doi.org/10.1093/gji/ggac10610.1093/gji/ggac106info: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:RCAAP2024-11-20T18:20:18Zoai:repositorio.ul.pt:10451/56730Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-11-20T18:20:18Repositório 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 Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise
title Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise
spellingShingle Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise
Silveira, Graça
Crustal imaging
Seismic interferometry
Seismic tomography
Surface waves and free oscillations
Crustal structure
title_short Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise
title_full Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise
title_fullStr Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise
title_full_unstemmed Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise
title_sort Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise
author Silveira, Graça
author_facet Silveira, Graça
Dias, Nuno Afonso
Kiselev, Sergey
Stutzmann, Eleonore
Custódio, Susana
Schimmel, Martin
author_role author
author2 Dias, Nuno Afonso
Kiselev, Sergey
Stutzmann, Eleonore
Custódio, Susana
Schimmel, Martin
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Silveira, Graça
Dias, Nuno Afonso
Kiselev, Sergey
Stutzmann, Eleonore
Custódio, Susana
Schimmel, Martin
dc.subject.por.fl_str_mv Crustal imaging
Seismic interferometry
Seismic tomography
Surface waves and free oscillations
Crustal structure
topic Crustal imaging
Seismic interferometry
Seismic tomography
Surface waves and free oscillations
Crustal structure
description This is a pre-copyedited, author-produced PDF of an article accepted for publication in Geophysical Journal International following peer review. The version of record Graça Silveira, Nuno Afonso Dias, Sergey Kiselev, Eleonore Stutzmann, Susana Custódio, Martin Schimmel, Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise, Geophysical Journal International, Volume 230, Issue 2, August 2022, Pages 1106–1120, https://doi.org/10.1093/gji/ggac106, is available online at: https://academic.oup.com/gji/article-abstract/230/2/1106/6550028?redirectedFrom=fulltext
publishDate 2022
dc.date.none.fl_str_mv 2022-04-17
2022-04-17T00:00:00Z
2023-03-21T10:47:53Z
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/10451/56730
url http://hdl.handle.net/10451/56730
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Graça Silveira, Nuno Afonso Dias, Sergey Kiselev, Eleonore Stutzmann, Susana Custódio, Martin Schimmel, Imaging the crust and uppermost mantle structure of Portugal (West Iberia) with seismic ambient noise, Geophysical Journal International, Volume 230, Issue 2, August 2022, Pages 1106–1120, https://doi.org/10.1093/gji/ggac106
10.1093/gji/ggac106
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 Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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 mluisa.alvim@gmail.com
_version_ 1817549226407624704

Registros relacionados