Long-duration seismicity and their relation to Copahue volcano unrest

Autores
Fernandez Melchor, Ivan; Almendros, Javier; Hantusch, Marcia; Samsonov, Sergey; Derauw, Dominique Maurice; Martínez, Enzo Gabriel; Caselli, Alberto Tomás
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Understanding seismic tremor wavefields can shed light on the complex functioning of a volcanic system and, thus, improve volcano monitoring systems. Usually, several seismic stations are required to detect, characterize, and locate volcanic tremors, which can be difficult in remote areas or low-income countries. In these cases, alternative techniques have to be used. Here, we apply a data-reduction approach based on the analysis of three-component seismic data from two co-located stations operating in different times to detect and analyze long-duration tremors. We characterize the spectral content and the polarization of 355 long-duration tremors recorded by a seismic sensor located 9.5 km SE from the active vent of Copahue volcano in the period 2012–2016 and 2018–2019. We classified them as narrow- (NB) and broad-band (BB) tremors according to their spectral content. Several parameters describe the characteristic peaks composing each NB episode: polarization degree, rectilinearity, horizontal azimuth, vertical incidence. Moreover, we propose two coefficients CP and CL for describing to what extent the wavefield is polarized. For BB episodes, we extend these attributes and express them as a function of frequency. We compare the occurrence of NB and BB episodes with the volcanic activity (including the level of the crater lake, deformation, temperature, and explosive activity) to get insights into their mechanisms. This comparison suggests that the wavefield of NB tremors becomes more linearly polarized during eruptive episodes, but does not provide any specific relationship between the tremor frequency and volcanic activity. On the other hand, BB tremors show a seasonal behavior that would be related to the activity of the shallow hydrothermal system.
Fil: Fernandez Melchor, Ivan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Almendros, Javier. Universidad de Granada. Facultad de Ciencias; España
Fil: Hantusch, Marcia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Samsonov, Sergey. Canada Centre For Mapping And Earth Observation; Canadá
Fil: Derauw, Dominique Maurice. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina. Université de Liège; Bélgica. European Centre of Geodynamics and Seismology; Luxemburgo
Fil: Martínez, Enzo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Caselli, Alberto Tomás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Materia
COPAHUE VOLCANO
DATA REDUCTION METHODS
NON-ERUPTIVE TREMOR
TREMOR CHARACTERIZATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/202186
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/202186
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Long-duration seismicity and their relation to Copahue volcano unrestFernandez Melchor, IvanAlmendros, JavierHantusch, MarciaSamsonov, SergeyDerauw, Dominique MauriceMartínez, Enzo GabrielCaselli, Alberto TomásCOPAHUE VOLCANODATA REDUCTION METHODSNON-ERUPTIVE TREMORTREMOR CHARACTERIZATIONhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Understanding seismic tremor wavefields can shed light on the complex functioning of a volcanic system and, thus, improve volcano monitoring systems. Usually, several seismic stations are required to detect, characterize, and locate volcanic tremors, which can be difficult in remote areas or low-income countries. In these cases, alternative techniques have to be used. Here, we apply a data-reduction approach based on the analysis of three-component seismic data from two co-located stations operating in different times to detect and analyze long-duration tremors. We characterize the spectral content and the polarization of 355 long-duration tremors recorded by a seismic sensor located 9.5 km SE from the active vent of Copahue volcano in the period 2012–2016 and 2018–2019. We classified them as narrow- (NB) and broad-band (BB) tremors according to their spectral content. Several parameters describe the characteristic peaks composing each NB episode: polarization degree, rectilinearity, horizontal azimuth, vertical incidence. Moreover, we propose two coefficients CP and CL for describing to what extent the wavefield is polarized. For BB episodes, we extend these attributes and express them as a function of frequency. We compare the occurrence of NB and BB episodes with the volcanic activity (including the level of the crater lake, deformation, temperature, and explosive activity) to get insights into their mechanisms. This comparison suggests that the wavefield of NB tremors becomes more linearly polarized during eruptive episodes, but does not provide any specific relationship between the tremor frequency and volcanic activity. On the other hand, BB tremors show a seasonal behavior that would be related to the activity of the shallow hydrothermal system.Fil: Fernandez Melchor, Ivan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Almendros, Javier. Universidad de Granada. Facultad de Ciencias; EspañaFil: Hantusch, Marcia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Samsonov, Sergey. Canada Centre For Mapping And Earth Observation; CanadáFil: Derauw, Dominique Maurice. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina. Université de Liège; Bélgica. European Centre of Geodynamics and Seismology; LuxemburgoFil: Martínez, Enzo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Caselli, Alberto Tomás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaSpringer Tokyo2022-12info: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/11336/202186Fernandez Melchor, Ivan; Almendros, Javier; Hantusch, Marcia; Samsonov, Sergey; Derauw, Dominique Maurice; et al.; Long-duration seismicity and their relation to Copahue volcano unrest; Springer Tokyo; Earth Planets And Space; 74; 3; 12-2022; 1-221343-88321880-5981CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://earth-planets-space.springeropen.com/articles/10.1186/s40623-021-01561-7info:eu-repo/semantics/altIdentifier/doi/10.1186/s40623-021-01561-7info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:52:34Zoai:ri.conicet.gov.ar:11336/202186instacron: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:34982025-09-03 09:52:34.821CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Long-duration seismicity and their relation to Copahue volcano unrest
title Long-duration seismicity and their relation to Copahue volcano unrest
spellingShingle Long-duration seismicity and their relation to Copahue volcano unrest
Fernandez Melchor, Ivan
COPAHUE VOLCANO
DATA REDUCTION METHODS
NON-ERUPTIVE TREMOR
TREMOR CHARACTERIZATION
title_short Long-duration seismicity and their relation to Copahue volcano unrest
title_full Long-duration seismicity and their relation to Copahue volcano unrest
title_fullStr Long-duration seismicity and their relation to Copahue volcano unrest
title_full_unstemmed Long-duration seismicity and their relation to Copahue volcano unrest
title_sort Long-duration seismicity and their relation to Copahue volcano unrest
dc.creator.none.fl_str_mv Fernandez Melchor, Ivan
Almendros, Javier
Hantusch, Marcia
Samsonov, Sergey
Derauw, Dominique Maurice
Martínez, Enzo Gabriel
Caselli, Alberto Tomás
author Fernandez Melchor, Ivan
author_facet Fernandez Melchor, Ivan
Almendros, Javier
Hantusch, Marcia
Samsonov, Sergey
Derauw, Dominique Maurice
Martínez, Enzo Gabriel
Caselli, Alberto Tomás
author_role author
author2 Almendros, Javier
Hantusch, Marcia
Samsonov, Sergey
Derauw, Dominique Maurice
Martínez, Enzo Gabriel
Caselli, Alberto Tomás
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv COPAHUE VOLCANO
DATA REDUCTION METHODS
NON-ERUPTIVE TREMOR
TREMOR CHARACTERIZATION
topic COPAHUE VOLCANO
DATA REDUCTION METHODS
NON-ERUPTIVE TREMOR
TREMOR CHARACTERIZATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Understanding seismic tremor wavefields can shed light on the complex functioning of a volcanic system and, thus, improve volcano monitoring systems. Usually, several seismic stations are required to detect, characterize, and locate volcanic tremors, which can be difficult in remote areas or low-income countries. In these cases, alternative techniques have to be used. Here, we apply a data-reduction approach based on the analysis of three-component seismic data from two co-located stations operating in different times to detect and analyze long-duration tremors. We characterize the spectral content and the polarization of 355 long-duration tremors recorded by a seismic sensor located 9.5 km SE from the active vent of Copahue volcano in the period 2012–2016 and 2018–2019. We classified them as narrow- (NB) and broad-band (BB) tremors according to their spectral content. Several parameters describe the characteristic peaks composing each NB episode: polarization degree, rectilinearity, horizontal azimuth, vertical incidence. Moreover, we propose two coefficients CP and CL for describing to what extent the wavefield is polarized. For BB episodes, we extend these attributes and express them as a function of frequency. We compare the occurrence of NB and BB episodes with the volcanic activity (including the level of the crater lake, deformation, temperature, and explosive activity) to get insights into their mechanisms. This comparison suggests that the wavefield of NB tremors becomes more linearly polarized during eruptive episodes, but does not provide any specific relationship between the tremor frequency and volcanic activity. On the other hand, BB tremors show a seasonal behavior that would be related to the activity of the shallow hydrothermal system.
Fil: Fernandez Melchor, Ivan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Almendros, Javier. Universidad de Granada. Facultad de Ciencias; España
Fil: Hantusch, Marcia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Samsonov, Sergey. Canada Centre For Mapping And Earth Observation; Canadá
Fil: Derauw, Dominique Maurice. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina. Université de Liège; Bélgica. European Centre of Geodynamics and Seismology; Luxemburgo
Fil: Martínez, Enzo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Caselli, Alberto Tomás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
description Understanding seismic tremor wavefields can shed light on the complex functioning of a volcanic system and, thus, improve volcano monitoring systems. Usually, several seismic stations are required to detect, characterize, and locate volcanic tremors, which can be difficult in remote areas or low-income countries. In these cases, alternative techniques have to be used. Here, we apply a data-reduction approach based on the analysis of three-component seismic data from two co-located stations operating in different times to detect and analyze long-duration tremors. We characterize the spectral content and the polarization of 355 long-duration tremors recorded by a seismic sensor located 9.5 km SE from the active vent of Copahue volcano in the period 2012–2016 and 2018–2019. We classified them as narrow- (NB) and broad-band (BB) tremors according to their spectral content. Several parameters describe the characteristic peaks composing each NB episode: polarization degree, rectilinearity, horizontal azimuth, vertical incidence. Moreover, we propose two coefficients CP and CL for describing to what extent the wavefield is polarized. For BB episodes, we extend these attributes and express them as a function of frequency. We compare the occurrence of NB and BB episodes with the volcanic activity (including the level of the crater lake, deformation, temperature, and explosive activity) to get insights into their mechanisms. This comparison suggests that the wavefield of NB tremors becomes more linearly polarized during eruptive episodes, but does not provide any specific relationship between the tremor frequency and volcanic activity. On the other hand, BB tremors show a seasonal behavior that would be related to the activity of the shallow hydrothermal system.
publishDate 2022
dc.date.none.fl_str_mv 2022-12
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/11336/202186
Fernandez Melchor, Ivan; Almendros, Javier; Hantusch, Marcia; Samsonov, Sergey; Derauw, Dominique Maurice; et al.; Long-duration seismicity and their relation to Copahue volcano unrest; Springer Tokyo; Earth Planets And Space; 74; 3; 12-2022; 1-22
1343-8832
1880-5981
CONICET Digital
CONICET
url http://hdl.handle.net/11336/202186
identifier_str_mv Fernandez Melchor, Ivan; Almendros, Javier; Hantusch, Marcia; Samsonov, Sergey; Derauw, Dominique Maurice; et al.; Long-duration seismicity and their relation to Copahue volcano unrest; Springer Tokyo; Earth Planets And Space; 74; 3; 12-2022; 1-22
1343-8832
1880-5981
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://earth-planets-space.springeropen.com/articles/10.1186/s40623-021-01561-7
info:eu-repo/semantics/altIdentifier/doi/10.1186/s40623-021-01561-7
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer Tokyo
publisher.none.fl_str_mv Springer Tokyo
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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