Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquake

Autores
Spagnotto, Silvana Liz; Triep, Enrique Gaudencio; Giambiagi, Laura Beatriz; Lupari, Marianela Nadia
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We localized crustal earthquakes in the Andean arc, between 35°S and 36°S, from December 2009 to May 2010. This research shows a seismicity increase, in a narrow longitudinal area, of more than nine times after the great Mw 8.8 Maule earthquake. The localized seismicity defines an area of 80 km long and 18 km wide and NNW to NNE trend. The Md magnitudes varied from 0.7 to 3.1 except for two earthquakes with Mw of 3.9 and 4.5, located in the northern end of the area. The focal mechanisms for these two last events were normal/strike-slip and strike-slip respectively.During 2011, a network of 13 temporary stations was installed in the trasarc region in Malargüe, Argentina. Sixty earthquakes were localized in the study region during an 8 month period. We explored how changes in Coulomb conditions associated with the mega-thrust earthquake triggered subsequent upper-plate events in the arc region. We assumed the major proposed structures as receiver faults and used previously published earthquake source parameters and slip distribution for the Maule quake. The largest contribution to static stress change, up to 5 bars, derives from unclamping resulting consistent with co-seismic dilatational deformation inferred from GPS observations in the region and subsidence in nearby volcanoes caused by magma migration.Three different Quaternary tectonic settings; extensional, strike-slip and compressional- have been proposed for the arc region at these latitudes. We found that the unclamping produced by the Maule quake could temporarily change the local regime to normal/strike-slip, or at least it would favour the activation of Quaternary NNE to N-trending dextral strike-slip faults with dextral transtensional movement.
Fil: Spagnotto, Silvana Liz. Universidad Nacional de San Luis; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Triep, Enrique Gaudencio. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto Geofísico Sismológico Volponi; Argentina
Fil: Giambiagi, Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Lupari, Marianela Nadia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto Geofísico Sismológico Volponi; Argentina
Materia
Triggered Seismicity
Static Stress Variation
Andean Arc Region
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/41924
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/41924
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquakeSpagnotto, Silvana LizTriep, Enrique GaudencioGiambiagi, Laura BeatrizLupari, Marianela NadiaTriggered SeismicityStatic Stress VariationAndean Arc Regionhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1We localized crustal earthquakes in the Andean arc, between 35°S and 36°S, from December 2009 to May 2010. This research shows a seismicity increase, in a narrow longitudinal area, of more than nine times after the great Mw 8.8 Maule earthquake. The localized seismicity defines an area of 80 km long and 18 km wide and NNW to NNE trend. The Md magnitudes varied from 0.7 to 3.1 except for two earthquakes with Mw of 3.9 and 4.5, located in the northern end of the area. The focal mechanisms for these two last events were normal/strike-slip and strike-slip respectively.During 2011, a network of 13 temporary stations was installed in the trasarc region in Malargüe, Argentina. Sixty earthquakes were localized in the study region during an 8 month period. We explored how changes in Coulomb conditions associated with the mega-thrust earthquake triggered subsequent upper-plate events in the arc region. We assumed the major proposed structures as receiver faults and used previously published earthquake source parameters and slip distribution for the Maule quake. The largest contribution to static stress change, up to 5 bars, derives from unclamping resulting consistent with co-seismic dilatational deformation inferred from GPS observations in the region and subsidence in nearby volcanoes caused by magma migration.Three different Quaternary tectonic settings; extensional, strike-slip and compressional- have been proposed for the arc region at these latitudes. We found that the unclamping produced by the Maule quake could temporarily change the local regime to normal/strike-slip, or at least it would favour the activation of Quaternary NNE to N-trending dextral strike-slip faults with dextral transtensional movement.Fil: Spagnotto, Silvana Liz. Universidad Nacional de San Luis; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Triep, Enrique Gaudencio. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto Geofísico Sismológico Volponi; ArgentinaFil: Giambiagi, Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Lupari, Marianela Nadia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto Geofísico Sismológico Volponi; ArgentinaPergamon-Elsevier Science Ltd2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/41924Spagnotto, Silvana Liz; Triep, Enrique Gaudencio; Giambiagi, Laura Beatriz; Lupari, Marianela Nadia; Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquake; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 63; 7-2015; 36-470895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S089598111530016Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2015.06.009info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:39:06Zoai:ri.conicet.gov.ar:11336/41924instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:39:06.573CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquake
title Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquake
spellingShingle Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquake
Spagnotto, Silvana Liz
Triggered Seismicity
Static Stress Variation
Andean Arc Region
title_short Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquake
title_full Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquake
title_fullStr Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquake
title_full_unstemmed Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquake
title_sort Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquake
dc.creator.none.fl_str_mv Spagnotto, Silvana Liz
Triep, Enrique Gaudencio
Giambiagi, Laura Beatriz
Lupari, Marianela Nadia
author Spagnotto, Silvana Liz
author_facet Spagnotto, Silvana Liz
Triep, Enrique Gaudencio
Giambiagi, Laura Beatriz
Lupari, Marianela Nadia
author_role author
author2 Triep, Enrique Gaudencio
Giambiagi, Laura Beatriz
Lupari, Marianela Nadia
author2_role author
author
author
dc.subject.none.fl_str_mv Triggered Seismicity
Static Stress Variation
Andean Arc Region
topic Triggered Seismicity
Static Stress Variation
Andean Arc Region
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We localized crustal earthquakes in the Andean arc, between 35°S and 36°S, from December 2009 to May 2010. This research shows a seismicity increase, in a narrow longitudinal area, of more than nine times after the great Mw 8.8 Maule earthquake. The localized seismicity defines an area of 80 km long and 18 km wide and NNW to NNE trend. The Md magnitudes varied from 0.7 to 3.1 except for two earthquakes with Mw of 3.9 and 4.5, located in the northern end of the area. The focal mechanisms for these two last events were normal/strike-slip and strike-slip respectively.During 2011, a network of 13 temporary stations was installed in the trasarc region in Malargüe, Argentina. Sixty earthquakes were localized in the study region during an 8 month period. We explored how changes in Coulomb conditions associated with the mega-thrust earthquake triggered subsequent upper-plate events in the arc region. We assumed the major proposed structures as receiver faults and used previously published earthquake source parameters and slip distribution for the Maule quake. The largest contribution to static stress change, up to 5 bars, derives from unclamping resulting consistent with co-seismic dilatational deformation inferred from GPS observations in the region and subsidence in nearby volcanoes caused by magma migration.Three different Quaternary tectonic settings; extensional, strike-slip and compressional- have been proposed for the arc region at these latitudes. We found that the unclamping produced by the Maule quake could temporarily change the local regime to normal/strike-slip, or at least it would favour the activation of Quaternary NNE to N-trending dextral strike-slip faults with dextral transtensional movement.
Fil: Spagnotto, Silvana Liz. Universidad Nacional de San Luis; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Triep, Enrique Gaudencio. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto Geofísico Sismológico Volponi; Argentina
Fil: Giambiagi, Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Lupari, Marianela Nadia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto Geofísico Sismológico Volponi; Argentina
description We localized crustal earthquakes in the Andean arc, between 35°S and 36°S, from December 2009 to May 2010. This research shows a seismicity increase, in a narrow longitudinal area, of more than nine times after the great Mw 8.8 Maule earthquake. The localized seismicity defines an area of 80 km long and 18 km wide and NNW to NNE trend. The Md magnitudes varied from 0.7 to 3.1 except for two earthquakes with Mw of 3.9 and 4.5, located in the northern end of the area. The focal mechanisms for these two last events were normal/strike-slip and strike-slip respectively.During 2011, a network of 13 temporary stations was installed in the trasarc region in Malargüe, Argentina. Sixty earthquakes were localized in the study region during an 8 month period. We explored how changes in Coulomb conditions associated with the mega-thrust earthquake triggered subsequent upper-plate events in the arc region. We assumed the major proposed structures as receiver faults and used previously published earthquake source parameters and slip distribution for the Maule quake. The largest contribution to static stress change, up to 5 bars, derives from unclamping resulting consistent with co-seismic dilatational deformation inferred from GPS observations in the region and subsidence in nearby volcanoes caused by magma migration.Three different Quaternary tectonic settings; extensional, strike-slip and compressional- have been proposed for the arc region at these latitudes. We found that the unclamping produced by the Maule quake could temporarily change the local regime to normal/strike-slip, or at least it would favour the activation of Quaternary NNE to N-trending dextral strike-slip faults with dextral transtensional movement.
publishDate 2015
dc.date.none.fl_str_mv 2015-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/41924
Spagnotto, Silvana Liz; Triep, Enrique Gaudencio; Giambiagi, Laura Beatriz; Lupari, Marianela Nadia; Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquake; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 63; 7-2015; 36-47
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/41924
identifier_str_mv Spagnotto, Silvana Liz; Triep, Enrique Gaudencio; Giambiagi, Laura Beatriz; Lupari, Marianela Nadia; Triggered seismicity in the Andean arc region via static stress variation by the MW=8.8, February 27, 2010, Maule earthquake; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 63; 7-2015; 36-47
0895-9811
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S089598111530016X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2015.06.009
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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