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dc.contributor.author
Velez, Maria Laura
dc.contributor.author
Euillades, Pablo Andrés
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Caselli, Alberto Tomás
dc.contributor.author
Blanco, Mauro Hugo
dc.contributor.author
Díaz, Jose Martínez
dc.date.available
2019-01-23T17:58:20Z
dc.date.issued
2011-04
dc.identifier.citation
Velez, Maria Laura; Euillades, Pablo Andrés; Caselli, Alberto Tomás; Blanco, Mauro Hugo; Díaz, Jose Martínez; Deformation of Copahue volcano: Inversion of InSAR data using a genetic algorithm; Elsevier Science; Journal of Volcanology and Geothermal Research; 202; 1-2; 4-2011; 117-126
dc.identifier.issn
0377-0273
dc.identifier.uri
http://hdl.handle.net/11336/68449
dc.description.abstract
The Copahue volcano is one of the most active volcanoes in Argentina with eruptions having been reported as recently as 1992, 1995 and 2000. A deformation analysis using the Differential Synthetic Aperture Radar technique (DInSAR) was performed on Copahue-Caviahue Volcanic Complex (CCVC) from Envisat radar images between 2002 and 2007. A deformation rate of approximately 2 cm/yr was calculated, located mostly on the north-eastern flank of Copahue volcano, and assumed to be constant during the period of the interferograms. The geometry of the source responsible for the deformation was evaluated from an inversion of the mean velocity deformation measurements using two different models based on pressure sources embedded in an elastic homogeneous half-space. A genetic algorithm was applied as an optimization tool to find the best fit source. Results from inverse modelling indicate that a source located beneath the volcano edifice at a mean depth of 4 km is producing a volume change of approximately 0.0015 km/yr. This source was analysed considering the available studies of the area, and a conceptual model of the volcanic-hydrothermal system was designed. The source of deformation is related to a depressurisation of the system that results from the release of magmatic fluids across the boundary between the brittle and plastic domains. These leakages are considered to be responsible for the weak phreatic eruptions recently registered at the Copahue volcano. © 2011 Elsevier B.V.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Copahue Volcano
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Deformation Source
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Genetic Algorithm
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Sbas-Dinsar
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Subsidence
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Volcanic-Hydrothermal System
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Vulcanología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Deformation of Copahue volcano: Inversion of InSAR data using a genetic algorithm
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-01-23T17:17:44Z
dc.journal.volume
202
dc.journal.number
1-2
dc.journal.pagination
117-126
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Velez, Maria Laura. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
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Fil: Euillades, Pablo Andrés. Universidad Nacional de Cuyo. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Caselli, Alberto Tomás. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Blanco, Mauro Hugo. Universidad Nacional de Cuyo. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Díaz, Jose Martínez. Universidad Complutense de Madrid; España
dc.journal.title
Journal of Volcanology and Geothermal Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jvolgeores.2011.01.012
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0377027311000394
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