Extended Seismic Source Characterisation using Linear Programming Inversion in a Dual Formulation
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/6943 |
Resumo: | A linear programming (LP) inversion method in a dual formulation was applied to reconstruct the kinematics of finite seismic ruptures. In a general setting, this approach can yield results from several data sets: strong ground motion, teleseismic waveforms or/and geodesic data (static deformation). The dual formulation involves the transformation of a normal solution space into an equivalent but reduced space: the dual space. The practical result of this transformation is a simpler inversion problem that is therefore faster to resolve, more stable and more robust. The developed algorithm includes a forward problem that calculates Green’s functions using a finite differences method with a 3D structure model. To evaluate the performance of this algorithm, we applied it to the reconstitution of a realistic slip distribution model from a data set synthesised using this model, i.e., the solution of the forward problem. Several other standard inversion approaches were applied to the same synthetic data for comparison. |
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Extended Seismic Source Characterisation using Linear Programming Inversion in a Dual FormulationSeismic source reconstitutionNumerical techniquesJoint seismic and geodetic data inversionA linear programming (LP) inversion method in a dual formulation was applied to reconstruct the kinematics of finite seismic ruptures. In a general setting, this approach can yield results from several data sets: strong ground motion, teleseismic waveforms or/and geodesic data (static deformation). The dual formulation involves the transformation of a normal solution space into an equivalent but reduced space: the dual space. The practical result of this transformation is a simpler inversion problem that is therefore faster to resolve, more stable and more robust. The developed algorithm includes a forward problem that calculates Green’s functions using a finite differences method with a 3D structure model. To evaluate the performance of this algorithm, we applied it to the reconstitution of a realistic slip distribution model from a data set synthesised using this model, i.e., the solution of the forward problem. Several other standard inversion approaches were applied to the same synthetic data for comparison.Portuguese Society for Earthquake Engineering2013-01-02T11:04:08Z2013-01-022012-09-24T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/6943http://hdl.handle.net/10174/6943engCaldeira B., J.F. Borges, M. Bezzeghoud, V. Bushenkov, G. Smirnov, 2012. Extended Seismic Source Characterization using Programming Inversion in DUAL Formulation. 15th World Congress in Earthquake Engineering, Lisbon, 24-28 Sep. 2012, 9 p.9Departamento de Física e Centro de Geofísica de Évorabafcc@uevora.ptjborges@uevora.ptmourad@uevora.ptbushen@uevora.ptndFifteenth World Conference on Earthquake Engineering393Caldeira, B.Borges, J.F.Bezzeghoud, M.Bushenkov, V.Smirnov, 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:RCAAP2024-01-03T18:46:41Zoai:dspace.uevora.pt:10174/6943Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:01:35.305596Repositório 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 |
Extended Seismic Source Characterisation using Linear Programming Inversion in a Dual Formulation |
title |
Extended Seismic Source Characterisation using Linear Programming Inversion in a Dual Formulation |
spellingShingle |
Extended Seismic Source Characterisation using Linear Programming Inversion in a Dual Formulation Caldeira, B. Seismic source reconstitution Numerical techniques Joint seismic and geodetic data inversion |
title_short |
Extended Seismic Source Characterisation using Linear Programming Inversion in a Dual Formulation |
title_full |
Extended Seismic Source Characterisation using Linear Programming Inversion in a Dual Formulation |
title_fullStr |
Extended Seismic Source Characterisation using Linear Programming Inversion in a Dual Formulation |
title_full_unstemmed |
Extended Seismic Source Characterisation using Linear Programming Inversion in a Dual Formulation |
title_sort |
Extended Seismic Source Characterisation using Linear Programming Inversion in a Dual Formulation |
author |
Caldeira, B. |
author_facet |
Caldeira, B. Borges, J.F. Bezzeghoud, M. Bushenkov, V. Smirnov, G. |
author_role |
author |
author2 |
Borges, J.F. Bezzeghoud, M. Bushenkov, V. Smirnov, G. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Caldeira, B. Borges, J.F. Bezzeghoud, M. Bushenkov, V. Smirnov, G. |
dc.subject.por.fl_str_mv |
Seismic source reconstitution Numerical techniques Joint seismic and geodetic data inversion |
topic |
Seismic source reconstitution Numerical techniques Joint seismic and geodetic data inversion |
description |
A linear programming (LP) inversion method in a dual formulation was applied to reconstruct the kinematics of finite seismic ruptures. In a general setting, this approach can yield results from several data sets: strong ground motion, teleseismic waveforms or/and geodesic data (static deformation). The dual formulation involves the transformation of a normal solution space into an equivalent but reduced space: the dual space. The practical result of this transformation is a simpler inversion problem that is therefore faster to resolve, more stable and more robust. The developed algorithm includes a forward problem that calculates Green’s functions using a finite differences method with a 3D structure model. To evaluate the performance of this algorithm, we applied it to the reconstitution of a realistic slip distribution model from a data set synthesised using this model, i.e., the solution of the forward problem. Several other standard inversion approaches were applied to the same synthetic data for comparison. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09-24T00:00:00Z 2013-01-02T11:04:08Z 2013-01-02 |
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/10174/6943 http://hdl.handle.net/10174/6943 |
url |
http://hdl.handle.net/10174/6943 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Caldeira B., J.F. Borges, M. Bezzeghoud, V. Bushenkov, G. Smirnov, 2012. Extended Seismic Source Characterization using Programming Inversion in DUAL Formulation. 15th World Congress in Earthquake Engineering, Lisbon, 24-28 Sep. 2012, 9 p. 9 Departamento de Física e Centro de Geofísica de Évora bafcc@uevora.pt jborges@uevora.pt mourad@uevora.pt bushen@uevora.pt nd Fifteenth World Conference on Earthquake Engineering 393 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Portuguese Society for Earthquake Engineering |
publisher.none.fl_str_mv |
Portuguese Society for Earthquake Engineering |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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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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1799136498995429376 |