20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques

Autores
Brunori, C. A.; Bignami, C.; Stramondo, S.; Bustos, Emilce
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
InSAR (interferometric synthetic aperture radar) techniques are applied to investigate last two decades of surface deformation of the Cerro Blanco/Robledo Caldera (CBRC). The objective is the identification of deforming patterns that alter the shape of these complex structures when they show low or null activity. The joint analysis between results by using different methods over a long time span, represents a unique opportunity to improve knowledge of volcanic structures located in remote area and, for this, poorly or not monitored. In this work we identify displacement patterns over the volcanic area, by using both classical differential InSAR analysis, and A-InSAR (advanced InSAR) analysis based on SAR data acquired by ERS-1/2 and ENVISAT sensors during the 1996-2010 time interval. The satellite-derived information allows us to characterize the deformation pattern that affected the CBRC and shows that the actively deforming CBRC is subsiding in the observed period. In order to figure out the deformation history of CBRC, we analyzed the four sub-periods 1992-1996, 1996-2000, and 2005-2010 by using standard differential InSAR technique, and the interval 2003-2007 by adopting an A-InSAR technique. Subsidence velocities of the CBRC caldera are about 2.6 cm/yr in the time interval 1992-1996 (measured with ERS descending data), 1.8 cm/yr in 1996-2000 (ERS descending data), 1.2 cm/yr in 2003-2007 (ENVISAT descending data), and finally, 0.87 cm/yr in 2005-2010 (ENVISAT ascending data). Moreover, outside the caldera and in particular in the NW area, we observe the presence of positive velocity values. Results show that: (a) a decreasing subsidence rate might be related to the reduction of volcanic activity in correspondence of the CBRC; (b) positive velocity signal, decreasing with time, might be interpreted as follows: - evidence of volcano structure lateral spreading, according to the velocity pattern distribution in this area and to the relative local flanks topographic convexity of the volcano structure; - uplift signal of this sector of mountain chain; - combination of the two mechanisms above.
Fil: Brunori, C. A.. Istituto Nazionale di Geofisica e Vulcanologia; Italia
Fil: Bignami, C.. Istituto Nazionale di Geofisica e Vulcanologia; Italia
Fil: Stramondo, S.. Istituto Nazionale di Geofisica e Vulcanologia; Italia
Fil: Bustos, Emilce. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Investigaciones en Energía No Convencional; Argentina
Materia
Insar
Deflation
Calderas
Volcanic Structures
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:11336/2610

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network_name_str CONICET Digital (CONICET)
spelling 20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniquesBrunori, C. A.Bignami, C.Stramondo, S.Bustos, EmilceInsarDeflationCalderasVolcanic Structureshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1InSAR (interferometric synthetic aperture radar) techniques are applied to investigate last two decades of surface deformation of the Cerro Blanco/Robledo Caldera (CBRC). The objective is the identification of deforming patterns that alter the shape of these complex structures when they show low or null activity. The joint analysis between results by using different methods over a long time span, represents a unique opportunity to improve knowledge of volcanic structures located in remote area and, for this, poorly or not monitored. In this work we identify displacement patterns over the volcanic area, by using both classical differential InSAR analysis, and A-InSAR (advanced InSAR) analysis based on SAR data acquired by ERS-1/2 and ENVISAT sensors during the 1996-2010 time interval. The satellite-derived information allows us to characterize the deformation pattern that affected the CBRC and shows that the actively deforming CBRC is subsiding in the observed period. In order to figure out the deformation history of CBRC, we analyzed the four sub-periods 1992-1996, 1996-2000, and 2005-2010 by using standard differential InSAR technique, and the interval 2003-2007 by adopting an A-InSAR technique. Subsidence velocities of the CBRC caldera are about 2.6 cm/yr in the time interval 1992-1996 (measured with ERS descending data), 1.8 cm/yr in 1996-2000 (ERS descending data), 1.2 cm/yr in 2003-2007 (ENVISAT descending data), and finally, 0.87 cm/yr in 2005-2010 (ENVISAT ascending data). Moreover, outside the caldera and in particular in the NW area, we observe the presence of positive velocity values. Results show that: (a) a decreasing subsidence rate might be related to the reduction of volcanic activity in correspondence of the CBRC; (b) positive velocity signal, decreasing with time, might be interpreted as follows: - evidence of volcano structure lateral spreading, according to the velocity pattern distribution in this area and to the relative local flanks topographic convexity of the volcano structure; - uplift signal of this sector of mountain chain; - combination of the two mechanisms above.Fil: Brunori, C. A.. Istituto Nazionale di Geofisica e Vulcanologia; ItaliaFil: Bignami, C.. Istituto Nazionale di Geofisica e Vulcanologia; ItaliaFil: Stramondo, S.. Istituto Nazionale di Geofisica e Vulcanologia; ItaliaFil: Bustos, Emilce. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Investigaciones en Energía No Convencional; ArgentinaElsevier Science2013-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/2610Brunori, C. A.; Bignami, C.; Stramondo, S.; Bustos, Emilce; 20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques; Elsevier Science; Itc Journal; 23; 8-2013; 279-2870303-2434enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jag.2012.10.003info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0303243412002036info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:47:19Zoai:ri.conicet.gov.ar:11336/2610instacron: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 09:47:19.96CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv 20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques
title 20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques
spellingShingle 20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques
Brunori, C. A.
Insar
Deflation
Calderas
Volcanic Structures
title_short 20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques
title_full 20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques
title_fullStr 20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques
title_full_unstemmed 20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques
title_sort 20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques
dc.creator.none.fl_str_mv Brunori, C. A.
Bignami, C.
Stramondo, S.
Bustos, Emilce
author Brunori, C. A.
author_facet Brunori, C. A.
Bignami, C.
Stramondo, S.
Bustos, Emilce
author_role author
author2 Bignami, C.
Stramondo, S.
Bustos, Emilce
author2_role author
author
author
dc.subject.none.fl_str_mv Insar
Deflation
Calderas
Volcanic Structures
topic Insar
Deflation
Calderas
Volcanic Structures
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv InSAR (interferometric synthetic aperture radar) techniques are applied to investigate last two decades of surface deformation of the Cerro Blanco/Robledo Caldera (CBRC). The objective is the identification of deforming patterns that alter the shape of these complex structures when they show low or null activity. The joint analysis between results by using different methods over a long time span, represents a unique opportunity to improve knowledge of volcanic structures located in remote area and, for this, poorly or not monitored. In this work we identify displacement patterns over the volcanic area, by using both classical differential InSAR analysis, and A-InSAR (advanced InSAR) analysis based on SAR data acquired by ERS-1/2 and ENVISAT sensors during the 1996-2010 time interval. The satellite-derived information allows us to characterize the deformation pattern that affected the CBRC and shows that the actively deforming CBRC is subsiding in the observed period. In order to figure out the deformation history of CBRC, we analyzed the four sub-periods 1992-1996, 1996-2000, and 2005-2010 by using standard differential InSAR technique, and the interval 2003-2007 by adopting an A-InSAR technique. Subsidence velocities of the CBRC caldera are about 2.6 cm/yr in the time interval 1992-1996 (measured with ERS descending data), 1.8 cm/yr in 1996-2000 (ERS descending data), 1.2 cm/yr in 2003-2007 (ENVISAT descending data), and finally, 0.87 cm/yr in 2005-2010 (ENVISAT ascending data). Moreover, outside the caldera and in particular in the NW area, we observe the presence of positive velocity values. Results show that: (a) a decreasing subsidence rate might be related to the reduction of volcanic activity in correspondence of the CBRC; (b) positive velocity signal, decreasing with time, might be interpreted as follows: - evidence of volcano structure lateral spreading, according to the velocity pattern distribution in this area and to the relative local flanks topographic convexity of the volcano structure; - uplift signal of this sector of mountain chain; - combination of the two mechanisms above.
Fil: Brunori, C. A.. Istituto Nazionale di Geofisica e Vulcanologia; Italia
Fil: Bignami, C.. Istituto Nazionale di Geofisica e Vulcanologia; Italia
Fil: Stramondo, S.. Istituto Nazionale di Geofisica e Vulcanologia; Italia
Fil: Bustos, Emilce. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Investigaciones en Energía No Convencional; Argentina
description InSAR (interferometric synthetic aperture radar) techniques are applied to investigate last two decades of surface deformation of the Cerro Blanco/Robledo Caldera (CBRC). The objective is the identification of deforming patterns that alter the shape of these complex structures when they show low or null activity. The joint analysis between results by using different methods over a long time span, represents a unique opportunity to improve knowledge of volcanic structures located in remote area and, for this, poorly or not monitored. In this work we identify displacement patterns over the volcanic area, by using both classical differential InSAR analysis, and A-InSAR (advanced InSAR) analysis based on SAR data acquired by ERS-1/2 and ENVISAT sensors during the 1996-2010 time interval. The satellite-derived information allows us to characterize the deformation pattern that affected the CBRC and shows that the actively deforming CBRC is subsiding in the observed period. In order to figure out the deformation history of CBRC, we analyzed the four sub-periods 1992-1996, 1996-2000, and 2005-2010 by using standard differential InSAR technique, and the interval 2003-2007 by adopting an A-InSAR technique. Subsidence velocities of the CBRC caldera are about 2.6 cm/yr in the time interval 1992-1996 (measured with ERS descending data), 1.8 cm/yr in 1996-2000 (ERS descending data), 1.2 cm/yr in 2003-2007 (ENVISAT descending data), and finally, 0.87 cm/yr in 2005-2010 (ENVISAT ascending data). Moreover, outside the caldera and in particular in the NW area, we observe the presence of positive velocity values. Results show that: (a) a decreasing subsidence rate might be related to the reduction of volcanic activity in correspondence of the CBRC; (b) positive velocity signal, decreasing with time, might be interpreted as follows: - evidence of volcano structure lateral spreading, according to the velocity pattern distribution in this area and to the relative local flanks topographic convexity of the volcano structure; - uplift signal of this sector of mountain chain; - combination of the two mechanisms above.
publishDate 2013
dc.date.none.fl_str_mv 2013-08
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/11336/2610
Brunori, C. A.; Bignami, C.; Stramondo, S.; Bustos, Emilce; 20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques; Elsevier Science; Itc Journal; 23; 8-2013; 279-287
0303-2434
url http://hdl.handle.net/11336/2610
identifier_str_mv Brunori, C. A.; Bignami, C.; Stramondo, S.; Bustos, Emilce; 20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques; Elsevier Science; Itc Journal; 23; 8-2013; 279-287
0303-2434
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jag.2012.10.003
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0303243412002036
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
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
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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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