The use of seismic tomography to describe the upper crustal structure beneath the Chalupas Caldera, Ecuador

The Chalupas Caldera is a rhyolitic volcano located in the Eastern Cordillera to the Southeast of the Cotopaxi Volcano in the Ecuadorian Andes. It is supposedly fed by a huge magmatic chamber below the caldera. For studying the Chalupas magmatic chamber, the tomographic models obtained by a Tarantol...

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Detalhes bibliográficos
Autores: Paredes, Cristopher Daniel, Araujo, Sebastián
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:Ecuador
Recursos:Universidad Regional Amazónica
Repositorio:Repositorio Universidad Regional Amazónica
OAI Identifier:oai:repositorio.ikiam.edu.ec:RD_IKIAM/442
Acesso em linha:https://doi.org/10.1590/0370-44672020740079
http://repositorio.ikiam.edu.ec/jspui/handle/RD_IKIAM/442
Access Level:acceso abierto
Palavra-chave:Seismic tomography
Magma chamber
Chalupas Caldera
Andes of Ecuador
Bayesian inversion
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spelling The use of seismic tomography to describe the upper crustal structure beneath the Chalupas Caldera, EcuadorParedes, Cristopher DanielAraujo, SebastiánSeismic tomographyMagma chamberChalupas CalderaAndes of EcuadorBayesian inversionThe Chalupas Caldera is a rhyolitic volcano located in the Eastern Cordillera to the Southeast of the Cotopaxi Volcano in the Ecuadorian Andes. It is supposedly fed by a huge magmatic chamber below the caldera. For studying the Chalupas magmatic chamber, the tomographic models obtained by a Tarantola-Valette inversion and studied previously in the entire Ecuadorian region were used. The theoretical basis of the tomography method based on a Bayesian solution of the inverse problem is introduced. The process of the inverse problem regularization is obtained by an L-curve scheme to achieve an optimal solution. The seismic tomography images zoomed in the Chalupas region are well correlated with the main geological terranes and faults documented for the basement of Eastern Cordillera. Based on the tomographic images obtained, it can be assumed that there is not a magmatic chamber of considerable magnitude placed close to the surface underneath the Chalupas Caldera, since it does not present seismic and tomographic evidence to be able to assume a possible volcanic eruption before long. Furthermore, the images allow identifying that the seismic and thermal activity is located beneath the Cotopaxi Volcano as a vertical anomaly beneath the Northeast of Cotopaxi Volcano that corresponds to the phreatomagmatic activity observed in 2015.Scopus2021-06-04T16:45:02Z2021-06-04T16:45:02Z2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfParedes, Cristopher Daniel; Araujo, S. (2021). The use of seismic tomography Caldera, Ecuador. Revista Escolar de Minas, 74(2), 189–197. doi.org/https://doi.org/10.1590/0370-44672020740079https://doi.org/10.1590/0370-44672020740079http://repositorio.ikiam.edu.ec/jspui/handle/RD_IKIAM/442PRODUCCIÒN CIENTÍFICA - ARTÍCULO CIENTÍFICO;A-IKIAM-000323Atribución-NoComercial-SinDerivadas 3.0 Estados Unidos de Américahttp://creativecommons.org/licenses/by-nc-nd/3.0/us/info:eu-repo/semantics/openAccessreponame:Repositorio Universidad Regional Amazónicainstname:Universidad Regional Amazónicainstacron:IKIAM2022-06-04T08:07:27Zoai:repositorio.ikiam.edu.ec:RD_IKIAM/442Institucionalhttps://repositorio.ikiam.edu.ec/Universidad públicahttps://www.ikiam.edu.ec/https://repositorio.ikiam.edu.ec/oaiEcuador...opendoar:02022-06-04T08:07:27falseInstitucionalhttps://repositorio.ikiam.edu.ec/Universidad públicahttps://www.ikiam.edu.ec/https://repositorio.ikiam.edu.ec/oai.Ecuador...opendoar:02022-06-04T08:07:27Repositorio Universidad Regional Amazónica - Universidad Regional Amazónicafalse
dc.title.none.fl_str_mv The use of seismic tomography to describe the upper crustal structure beneath the Chalupas Caldera, Ecuador
title The use of seismic tomography to describe the upper crustal structure beneath the Chalupas Caldera, Ecuador
spellingShingle The use of seismic tomography to describe the upper crustal structure beneath the Chalupas Caldera, Ecuador
Paredes, Cristopher Daniel
Seismic tomography
Magma chamber
Chalupas Caldera
Andes of Ecuador
Bayesian inversion
title_short The use of seismic tomography to describe the upper crustal structure beneath the Chalupas Caldera, Ecuador
title_full The use of seismic tomography to describe the upper crustal structure beneath the Chalupas Caldera, Ecuador
title_fullStr The use of seismic tomography to describe the upper crustal structure beneath the Chalupas Caldera, Ecuador
title_full_unstemmed The use of seismic tomography to describe the upper crustal structure beneath the Chalupas Caldera, Ecuador
title_sort The use of seismic tomography to describe the upper crustal structure beneath the Chalupas Caldera, Ecuador
dc.creator.none.fl_str_mv Paredes, Cristopher Daniel
Araujo, Sebastián
author Paredes, Cristopher Daniel
author_facet Paredes, Cristopher Daniel
Araujo, Sebastián
author_role author
author2 Araujo, Sebastián
author2_role author
dc.subject.none.fl_str_mv Seismic tomography
Magma chamber
Chalupas Caldera
Andes of Ecuador
Bayesian inversion
topic Seismic tomography
Magma chamber
Chalupas Caldera
Andes of Ecuador
Bayesian inversion
description The Chalupas Caldera is a rhyolitic volcano located in the Eastern Cordillera to the Southeast of the Cotopaxi Volcano in the Ecuadorian Andes. It is supposedly fed by a huge magmatic chamber below the caldera. For studying the Chalupas magmatic chamber, the tomographic models obtained by a Tarantola-Valette inversion and studied previously in the entire Ecuadorian region were used. The theoretical basis of the tomography method based on a Bayesian solution of the inverse problem is introduced. The process of the inverse problem regularization is obtained by an L-curve scheme to achieve an optimal solution. The seismic tomography images zoomed in the Chalupas region are well correlated with the main geological terranes and faults documented for the basement of Eastern Cordillera. Based on the tomographic images obtained, it can be assumed that there is not a magmatic chamber of considerable magnitude placed close to the surface underneath the Chalupas Caldera, since it does not present seismic and tomographic evidence to be able to assume a possible volcanic eruption before long. Furthermore, the images allow identifying that the seismic and thermal activity is located beneath the Cotopaxi Volcano as a vertical anomaly beneath the Northeast of Cotopaxi Volcano that corresponds to the phreatomagmatic activity observed in 2015.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-04T16:45:02Z
2021-06-04T16:45:02Z
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv Paredes, Cristopher Daniel; Araujo, S. (2021). The use of seismic tomography Caldera, Ecuador. Revista Escolar de Minas, 74(2), 189–197. doi.org/https://doi.org/10.1590/0370-44672020740079
https://doi.org/10.1590/0370-44672020740079
http://repositorio.ikiam.edu.ec/jspui/handle/RD_IKIAM/442
identifier_str_mv Paredes, Cristopher Daniel; Araujo, S. (2021). The use of seismic tomography Caldera, Ecuador. Revista Escolar de Minas, 74(2), 189–197. doi.org/https://doi.org/10.1590/0370-44672020740079
url https://doi.org/10.1590/0370-44672020740079
http://repositorio.ikiam.edu.ec/jspui/handle/RD_IKIAM/442
dc.relation.none.fl_str_mv PRODUCCIÒN CIENTÍFICA - ARTÍCULO CIENTÍFICO;A-IKIAM-000323
dc.rights.none.fl_str_mv Atribución-NoComercial-SinDerivadas 3.0 Estados Unidos de América
http://creativecommons.org/licenses/by-nc-nd/3.0/us/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial-SinDerivadas 3.0 Estados Unidos de América
http://creativecommons.org/licenses/by-nc-nd/3.0/us/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Scopus
publisher.none.fl_str_mv Scopus
dc.source.none.fl_str_mv reponame:Repositorio Universidad Regional Amazónica
instname:Universidad Regional Amazónica
instacron:IKIAM
instname_str Universidad Regional Amazónica
instacron_str IKIAM
institution IKIAM
reponame_str Repositorio Universidad Regional Amazónica
collection Repositorio Universidad Regional Amazónica
repository.name.fl_str_mv Repositorio Universidad Regional Amazónica - Universidad Regional Amazónica
repository.mail.fl_str_mv .
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