Deformation of Copahue volcano: Inversion of InSAR data using a genetic algorithm

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 Envisa...

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Autores principales: Velez, M.L., Euillades, P., Caselli, A., Blanco, M., Díaz, J.M.
Formato: JOUR
Materias:
Copahue volcano
Deformation source
Genetic algorithm
SBAS-DInSAR
Subsidence
Volcanic-hydrothermal system
Active volcanoes
Argentina
Best fit
Conceptual model
D-inSAR
Deformation analysis
Deformation rates
Differential synthetic aperture radar
ENVISAT
Half-space
Hydrothermal system
InSAR data
Interferograms
Inverse modelling
Magmatic fluids
Mean velocities
Optimization tools
Phreatic
Pressure source
Radar image
Volcanic complex
Volume change
Deformation
Genetic algorithms
Geodetic satellites
Imaging systems
Radar
Synthetic aperture radar
Volcanoes
data inversion
Envisat-1
genetic algorithm
hydrothermal system
phreatic zone
subsidence
volcanic eruption
Copahue
Neuquen
Southern Volcanic Zone
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03770273_v202_n1-2_p117_Velez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_03770273_v202_n1-2_p117_Velez2023-10-03T15:31:22Z Deformation of Copahue volcano: Inversion of InSAR data using a genetic algorithm Velez, M.L. Euillades, P. Caselli, A. Blanco, M. Díaz, J.M. Copahue volcano Deformation source Genetic algorithm SBAS-DInSAR Subsidence Volcanic-hydrothermal system Active volcanoes Argentina Best fit Conceptual model Copahue volcano D-inSAR Deformation analysis Deformation rates Differential synthetic aperture radar ENVISAT Half-space Hydrothermal system InSAR data Interferograms Inverse modelling Magmatic fluids Mean velocities Optimization tools Phreatic Pressure source Radar image SBAS-DInSAR Volcanic complex Volume change Deformation Genetic algorithms Geodetic satellites Imaging systems Radar Subsidence Synthetic aperture radar Volcanoes data inversion Envisat-1 genetic algorithm hydrothermal system phreatic zone subsidence volcanic eruption Argentina Copahue Neuquen Southern Volcanic Zone 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. Fil:Velez, M.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Caselli, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03770273_v202_n1-2_p117_Velez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Copahue volcano
Deformation source
Genetic algorithm
SBAS-DInSAR
Subsidence
Volcanic-hydrothermal system
Active volcanoes
Argentina
Best fit
Conceptual model
Copahue volcano
D-inSAR
Deformation analysis
Deformation rates
Differential synthetic aperture radar
ENVISAT
Half-space
Hydrothermal system
InSAR data
Interferograms
Inverse modelling
Magmatic fluids
Mean velocities
Optimization tools
Phreatic
Pressure source
Radar image
SBAS-DInSAR
Volcanic complex
Volume change
Deformation
Genetic algorithms
Geodetic satellites
Imaging systems
Radar
Subsidence
Synthetic aperture radar
Volcanoes
data inversion
Envisat-1
genetic algorithm
hydrothermal system
phreatic zone
subsidence
volcanic eruption
Argentina
Copahue
Neuquen
Southern Volcanic Zone
spellingShingle Copahue volcano
Deformation source
Genetic algorithm
SBAS-DInSAR
Subsidence
Volcanic-hydrothermal system
Active volcanoes
Argentina
Best fit
Conceptual model
Copahue volcano
D-inSAR
Deformation analysis
Deformation rates
Differential synthetic aperture radar
ENVISAT
Half-space
Hydrothermal system
InSAR data
Interferograms
Inverse modelling
Magmatic fluids
Mean velocities
Optimization tools
Phreatic
Pressure source
Radar image
SBAS-DInSAR
Volcanic complex
Volume change
Deformation
Genetic algorithms
Geodetic satellites
Imaging systems
Radar
Subsidence
Synthetic aperture radar
Volcanoes
data inversion
Envisat-1
genetic algorithm
hydrothermal system
phreatic zone
subsidence
volcanic eruption
Argentina
Copahue
Neuquen
Southern Volcanic Zone
Velez, M.L.
Euillades, P.
Caselli, A.
Blanco, M.
Díaz, J.M.
Deformation of Copahue volcano: Inversion of InSAR data using a genetic algorithm
topic_facet Copahue volcano
Deformation source
Genetic algorithm
SBAS-DInSAR
Subsidence
Volcanic-hydrothermal system
Active volcanoes
Argentina
Best fit
Conceptual model
Copahue volcano
D-inSAR
Deformation analysis
Deformation rates
Differential synthetic aperture radar
ENVISAT
Half-space
Hydrothermal system
InSAR data
Interferograms
Inverse modelling
Magmatic fluids
Mean velocities
Optimization tools
Phreatic
Pressure source
Radar image
SBAS-DInSAR
Volcanic complex
Volume change
Deformation
Genetic algorithms
Geodetic satellites
Imaging systems
Radar
Subsidence
Synthetic aperture radar
Volcanoes
data inversion
Envisat-1
genetic algorithm
hydrothermal system
phreatic zone
subsidence
volcanic eruption
Argentina
Copahue
Neuquen
Southern Volcanic Zone
description 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.
format JOUR
author Velez, M.L.
Euillades, P.
Caselli, A.
Blanco, M.
Díaz, J.M.
author_facet Velez, M.L.
Euillades, P.
Caselli, A.
Blanco, M.
Díaz, J.M.
author_sort Velez, M.L.
title Deformation of Copahue volcano: Inversion of InSAR data using a genetic algorithm
title_short Deformation of Copahue volcano: Inversion of InSAR data using a genetic algorithm
title_full Deformation of Copahue volcano: Inversion of InSAR data using a genetic algorithm
title_fullStr Deformation of Copahue volcano: Inversion of InSAR data using a genetic algorithm
title_full_unstemmed Deformation of Copahue volcano: Inversion of InSAR data using a genetic algorithm
title_sort deformation of copahue volcano: inversion of insar data using a genetic algorithm
url http://hdl.handle.net/20.500.12110/paper_03770273_v202_n1-2_p117_Velez
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AT euilladesp deformationofcopahuevolcanoinversionofinsardatausingageneticalgorithm
AT casellia deformationofcopahuevolcanoinversionofinsardatausingageneticalgorithm
AT blancom deformationofcopahuevolcanoinversionofinsardatausingageneticalgorithm
AT diazjm deformationofcopahuevolcanoinversionofinsardatausingageneticalgorithm
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