Time-scales of inter-eruptive volcano uplift signals: Three Sisters volcanic center, Oregon (United States)

A classical inflation-eruption-deflation cycle of a volcano is useful to conceptualize the timeevolving deformation of volcanic systems. Such a model predicts accelerated uplift during pre-eruptive periods, followed by subsidence during the co-eruptive stage. Some volcanoes show puzzling persistent...

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Autores: Rodríguez Molina, Sara, González, Pablo J., Charco Romero, María, Negredo Moreno, Ana María, Schmidt, David A.
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/7885
Acceso en línea:https://hdl.handle.net/20.500.14352/7885
Access Level:acceso abierto
Palabra clave:52
Inter-eruptive deformation
Characteristic relaxation time
Continuous GPS
Interferometric synthetic aperture radar
Geodetic time series
Three sisters volcano
Física atmosférica
2501 Ciencias de la Atmósfera
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spelling Time-scales of inter-eruptive volcano uplift signals: Three Sisters volcanic center, Oregon (United States)Rodríguez Molina, SaraGonzález, Pablo J.Charco Romero, MaríaNegredo Moreno, Ana MaríaSchmidt, David A.52Inter-eruptive deformationCharacteristic relaxation timeContinuous GPSInterferometric synthetic aperture radarGeodetic time seriesThree sisters volcanoFísica atmosférica2501 Ciencias de la AtmósferaA classical inflation-eruption-deflation cycle of a volcano is useful to conceptualize the timeevolving deformation of volcanic systems. Such a model predicts accelerated uplift during pre-eruptive periods, followed by subsidence during the co-eruptive stage. Some volcanoes show puzzling persistent uplift signals with minor or no other geophysical or geochemical variations, which are difficult to interpret. Such temporal behaviors are usually observed in large calderas (e.g., Yellowstone, Long Valley, Campi Flegrei, Rabaul), but less commonly for stratovolcanoes. Volcano deformation needs to be better understood during inter-eruptive stages, to assess its value as a tool for forecasting eruptions and to understand the processes governing the unrest behavior. Here, we analyze intereruptive uplift signals at Three Sisters, a complex stratovolcano in Oregon (United States), which in recent decades shows persistent inter-eruptive uplift signals without associated eruptive activity. Using a Bayesian inversion method, we re-assessed the source characteristics (magmatic system geometry and location) and its uncertainties. Furthermore, we evaluate the most recent evolution of the surface deformation signals combining both GPS and InSAR data through a new non-subjective linear regularization inversion procedure to estimate the 26 years-long time-series. Our results constrain the onset of the Three Sisters volcano inflation to be between October 1998 and August 1999. In the absence of new magmatic inputs, we estimate a continuous uplift signal, at diminishing but detectable rates, to last for few decades. The observed uplift decay observed at Three Sisters is consistent with a viscoelastic response of the crust, with viscosity of ∼10^(18) Pa s around a magmatic source with a pressure change which increases in finite time to a constant value. Finally, we compare Three Sisters volcano time series with historical uplift at different volcanic systems. Proper modeling of scaled inflation time series indicates a unique and well-defined exponential decay in temporal behavior. Such evidence supports that this common temporal evolution of uplift rates could be a potential indicator of a rather reduced set of physical processes behind inter-eruptive uplift signals.Frontiers MediaUniversidad Complutense de Madrid20212021-01-2120212021-01-21journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/7885reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/78852026-06-02T12:44:21Z
dc.title.none.fl_str_mv Time-scales of inter-eruptive volcano uplift signals: Three Sisters volcanic center, Oregon (United States)
title Time-scales of inter-eruptive volcano uplift signals: Three Sisters volcanic center, Oregon (United States)
spellingShingle Time-scales of inter-eruptive volcano uplift signals: Three Sisters volcanic center, Oregon (United States)
Rodríguez Molina, Sara
52
Inter-eruptive deformation
Characteristic relaxation time
Continuous GPS
Interferometric synthetic aperture radar
Geodetic time series
Three sisters volcano
Física atmosférica
2501 Ciencias de la Atmósfera
title_short Time-scales of inter-eruptive volcano uplift signals: Three Sisters volcanic center, Oregon (United States)
title_full Time-scales of inter-eruptive volcano uplift signals: Three Sisters volcanic center, Oregon (United States)
title_fullStr Time-scales of inter-eruptive volcano uplift signals: Three Sisters volcanic center, Oregon (United States)
title_full_unstemmed Time-scales of inter-eruptive volcano uplift signals: Three Sisters volcanic center, Oregon (United States)
title_sort Time-scales of inter-eruptive volcano uplift signals: Three Sisters volcanic center, Oregon (United States)
dc.creator.none.fl_str_mv Rodríguez Molina, Sara
González, Pablo J.
Charco Romero, María
Negredo Moreno, Ana María
Schmidt, David A.
author Rodríguez Molina, Sara
author_facet Rodríguez Molina, Sara
González, Pablo J.
Charco Romero, María
Negredo Moreno, Ana María
Schmidt, David A.
author_role author
author2 González, Pablo J.
Charco Romero, María
Negredo Moreno, Ana María
Schmidt, David A.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 52
Inter-eruptive deformation
Characteristic relaxation time
Continuous GPS
Interferometric synthetic aperture radar
Geodetic time series
Three sisters volcano
Física atmosférica
2501 Ciencias de la Atmósfera
topic 52
Inter-eruptive deformation
Characteristic relaxation time
Continuous GPS
Interferometric synthetic aperture radar
Geodetic time series
Three sisters volcano
Física atmosférica
2501 Ciencias de la Atmósfera
description A classical inflation-eruption-deflation cycle of a volcano is useful to conceptualize the timeevolving deformation of volcanic systems. Such a model predicts accelerated uplift during pre-eruptive periods, followed by subsidence during the co-eruptive stage. Some volcanoes show puzzling persistent uplift signals with minor or no other geophysical or geochemical variations, which are difficult to interpret. Such temporal behaviors are usually observed in large calderas (e.g., Yellowstone, Long Valley, Campi Flegrei, Rabaul), but less commonly for stratovolcanoes. Volcano deformation needs to be better understood during inter-eruptive stages, to assess its value as a tool for forecasting eruptions and to understand the processes governing the unrest behavior. Here, we analyze intereruptive uplift signals at Three Sisters, a complex stratovolcano in Oregon (United States), which in recent decades shows persistent inter-eruptive uplift signals without associated eruptive activity. Using a Bayesian inversion method, we re-assessed the source characteristics (magmatic system geometry and location) and its uncertainties. Furthermore, we evaluate the most recent evolution of the surface deformation signals combining both GPS and InSAR data through a new non-subjective linear regularization inversion procedure to estimate the 26 years-long time-series. Our results constrain the onset of the Three Sisters volcano inflation to be between October 1998 and August 1999. In the absence of new magmatic inputs, we estimate a continuous uplift signal, at diminishing but detectable rates, to last for few decades. The observed uplift decay observed at Three Sisters is consistent with a viscoelastic response of the crust, with viscosity of ∼10^(18) Pa s around a magmatic source with a pressure change which increases in finite time to a constant value. Finally, we compare Three Sisters volcano time series with historical uplift at different volcanic systems. Proper modeling of scaled inflation time series indicates a unique and well-defined exponential decay in temporal behavior. Such evidence supports that this common temporal evolution of uplift rates could be a potential indicator of a rather reduced set of physical processes behind inter-eruptive uplift signals.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-01-21
2021
2021-01-21
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/7885
url https://hdl.handle.net/20.500.14352/7885
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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