Strains arising by seismic events in the SIRGAS-CON network region
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.2478/jogs-2013-0005 http://hdl.handle.net/11449/227198 |
Resumo: | In this study, we investigate surface strains related to seismic events and their relationship with pre- and post-seismic events in Latin America, by analyzing the variation of estimated earth coordinates supplied by a geodetic network called SIRGAS-CON. Based on data provided by the USGS for the period 2000-2011, and after the Global Congruency test, we selected four events associated with unstable geodetic network points. The resulting strains were estimated based on the finite element method using networks of points considered unstable connected to neighboring points using the Delaunay triangulation. It was possible to determine the strains along with the resulting guidelines for pre- and post-seismic, considering each triangular lattice formed for analysis as a homogeneous solid body. The calculation of strains and verification of the results allowed to analyze the interactions between lithospheric plates from the contraction and extension directions between points located in different plates. Despite the association between seismic events and the strain of geodetic network, some events of magnitude greater than 5.8 Mw were excluded because it does not show (provide) the surface strain, which is located at great depths. It was confirmed that events of greater magnitude provide increased surface strain rate when compared with other similar depths. |
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Strains arising by seismic events in the SIRGAS-CON network regiongeodetic networklithospheric platespost-seismicpre-seismicsurface strainsIn this study, we investigate surface strains related to seismic events and their relationship with pre- and post-seismic events in Latin America, by analyzing the variation of estimated earth coordinates supplied by a geodetic network called SIRGAS-CON. Based on data provided by the USGS for the period 2000-2011, and after the Global Congruency test, we selected four events associated with unstable geodetic network points. The resulting strains were estimated based on the finite element method using networks of points considered unstable connected to neighboring points using the Delaunay triangulation. It was possible to determine the strains along with the resulting guidelines for pre- and post-seismic, considering each triangular lattice formed for analysis as a homogeneous solid body. The calculation of strains and verification of the results allowed to analyze the interactions between lithospheric plates from the contraction and extension directions between points located in different plates. Despite the association between seismic events and the strain of geodetic network, some events of magnitude greater than 5.8 Mw were excluded because it does not show (provide) the surface strain, which is located at great depths. It was confirmed that events of greater magnitude provide increased surface strain rate when compared with other similar depths.Seismological Observatory - Geosciences Institute University of Brasília Campus Universitário Darcy RibeiroDepartment of Cartography - Faculty of Science and Technology Paulista State University Júlio de Mesquita Filho, Rua Roberto Simonsen 305Geochronology Laboratory - Geosciences Institute University of Brasília Campus Universitário Darcy RibeiroDepartment of Cartography - Faculty of Science and Technology Paulista State University Júlio de Mesquita Filho, Rua Roberto Simonsen 305University of BrasíliaUniversidade Estadual Paulista (UNESP)Marotta, G. S.França, G. S.Monico, J. F.G. [UNESP]Fuck, R. A.2022-04-29T07:11:55Z2022-04-29T07:11:55Z2013-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article12-21http://dx.doi.org/10.2478/jogs-2013-0005Journal of Geodetic Science, v. 3, n. 1, p. 12-21, 2013.2081-9943http://hdl.handle.net/11449/22719810.2478/jogs-2013-00052-s2.0-84882807538Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Geodetic Scienceinfo:eu-repo/semantics/openAccess2024-06-18T15:01:39Zoai:repositorio.unesp.br:11449/227198Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:52:30.778742Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Strains arising by seismic events in the SIRGAS-CON network region |
title |
Strains arising by seismic events in the SIRGAS-CON network region |
spellingShingle |
Strains arising by seismic events in the SIRGAS-CON network region Marotta, G. S. geodetic network lithospheric plates post-seismic pre-seismic surface strains |
title_short |
Strains arising by seismic events in the SIRGAS-CON network region |
title_full |
Strains arising by seismic events in the SIRGAS-CON network region |
title_fullStr |
Strains arising by seismic events in the SIRGAS-CON network region |
title_full_unstemmed |
Strains arising by seismic events in the SIRGAS-CON network region |
title_sort |
Strains arising by seismic events in the SIRGAS-CON network region |
author |
Marotta, G. S. |
author_facet |
Marotta, G. S. França, G. S. Monico, J. F.G. [UNESP] Fuck, R. A. |
author_role |
author |
author2 |
França, G. S. Monico, J. F.G. [UNESP] Fuck, R. A. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
University of Brasília Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Marotta, G. S. França, G. S. Monico, J. F.G. [UNESP] Fuck, R. A. |
dc.subject.por.fl_str_mv |
geodetic network lithospheric plates post-seismic pre-seismic surface strains |
topic |
geodetic network lithospheric plates post-seismic pre-seismic surface strains |
description |
In this study, we investigate surface strains related to seismic events and their relationship with pre- and post-seismic events in Latin America, by analyzing the variation of estimated earth coordinates supplied by a geodetic network called SIRGAS-CON. Based on data provided by the USGS for the period 2000-2011, and after the Global Congruency test, we selected four events associated with unstable geodetic network points. The resulting strains were estimated based on the finite element method using networks of points considered unstable connected to neighboring points using the Delaunay triangulation. It was possible to determine the strains along with the resulting guidelines for pre- and post-seismic, considering each triangular lattice formed for analysis as a homogeneous solid body. The calculation of strains and verification of the results allowed to analyze the interactions between lithospheric plates from the contraction and extension directions between points located in different plates. Despite the association between seismic events and the strain of geodetic network, some events of magnitude greater than 5.8 Mw were excluded because it does not show (provide) the surface strain, which is located at great depths. It was confirmed that events of greater magnitude provide increased surface strain rate when compared with other similar depths. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-03-01 2022-04-29T07:11:55Z 2022-04-29T07:11:55Z |
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://dx.doi.org/10.2478/jogs-2013-0005 Journal of Geodetic Science, v. 3, n. 1, p. 12-21, 2013. 2081-9943 http://hdl.handle.net/11449/227198 10.2478/jogs-2013-0005 2-s2.0-84882807538 |
url |
http://dx.doi.org/10.2478/jogs-2013-0005 http://hdl.handle.net/11449/227198 |
identifier_str_mv |
Journal of Geodetic Science, v. 3, n. 1, p. 12-21, 2013. 2081-9943 10.2478/jogs-2013-0005 2-s2.0-84882807538 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Geodetic Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
12-21 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128993624326144 |