Time-Scales of Inter-eruptive Volcano Uplift Signals: Three Sisters Volcanic center, Oregon (USA)

A classical inflation-eruption-deflation cycle of a volcano is useful to conceptualize the time-evolving 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, María, Negredo, Ana M., Schmidt, David A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/227261
Acceso en línea:http://hdl.handle.net/10261/227261
Access Level:acceso abierto
Palabra clave:Inter-eruptive deformation
Characteristic relaxation time
Continuous GPS
Interferometric synthetic aperture radar
Geodetic time series
Three Sisters volcano
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spelling Time-Scales of Inter-eruptive Volcano Uplift Signals: Three Sisters Volcanic center, Oregon (USA)Rodríguez-Molina, SaraGonzález, Pablo J.Charco, MaríaNegredo, Ana M.Schmidt, David A.Inter-eruptive deformationCharacteristic relaxation timeContinuous GPSInterferometric synthetic aperture radarGeodetic time seriesThree Sisters volcanoA classical inflation-eruption-deflation cycle of a volcano is useful to conceptualize the time-evolving 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 inter-eruptive 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 ∼1018 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.Part of this work was carried out during research visits of SR-M to the University of Liverpool and the U.S. Geological Survey (USGS) Cascades Volcano Observatory (CVO). PG was supported by the United Kingdom NERC project Centre for the Observation and Modeling of Earthquakes, Volcanoes and Tectonics (COMET, GA/13/M/031, comet.nerc.ac.uk). SR-M, MC, and AN research was supported by MINECO projects CGL2014‐58821‐C2‐1‐R and PGC2018‐095154‐B‐I00. SR-M was also supported by MINECO fellowship BES-2015-074228.Peer reviewedFrontiers MediaUniversity of LiverpoolU.S. Geological SurveyNatural Environment Research Council (UK)Ministerio de Asuntos Económicos y Transformación Digital (España)Cabildo de TenerifeConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202120212021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/227261reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#MINECO/CGL2014/58821‐C2‐1‐RMINECO/PGC2018/095154‐B‐I00MINECO/BES2015/074228https://doi.org/10.3389/feart.2020.577588Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2272612026-05-22T06:33:51Z
dc.title.none.fl_str_mv Time-Scales of Inter-eruptive Volcano Uplift Signals: Three Sisters Volcanic center, Oregon (USA)
title Time-Scales of Inter-eruptive Volcano Uplift Signals: Three Sisters Volcanic center, Oregon (USA)
spellingShingle Time-Scales of Inter-eruptive Volcano Uplift Signals: Three Sisters Volcanic center, Oregon (USA)
Rodríguez-Molina, Sara
Inter-eruptive deformation
Characteristic relaxation time
Continuous GPS
Interferometric synthetic aperture radar
Geodetic time series
Three Sisters volcano
title_short Time-Scales of Inter-eruptive Volcano Uplift Signals: Three Sisters Volcanic center, Oregon (USA)
title_full Time-Scales of Inter-eruptive Volcano Uplift Signals: Three Sisters Volcanic center, Oregon (USA)
title_fullStr Time-Scales of Inter-eruptive Volcano Uplift Signals: Three Sisters Volcanic center, Oregon (USA)
title_full_unstemmed Time-Scales of Inter-eruptive Volcano Uplift Signals: Three Sisters Volcanic center, Oregon (USA)
title_sort Time-Scales of Inter-eruptive Volcano Uplift Signals: Three Sisters Volcanic center, Oregon (USA)
dc.creator.none.fl_str_mv Rodríguez-Molina, Sara
González, Pablo J.
Charco, María
Negredo, Ana M.
Schmidt, David A.
author Rodríguez-Molina, Sara
author_facet Rodríguez-Molina, Sara
González, Pablo J.
Charco, María
Negredo, Ana M.
Schmidt, David A.
author_role author
author2 González, Pablo J.
Charco, María
Negredo, Ana M.
Schmidt, David A.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv University of Liverpool
U.S. Geological Survey
Natural Environment Research Council (UK)
Ministerio de Asuntos Económicos y Transformación Digital (España)
Cabildo de Tenerife
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Inter-eruptive deformation
Characteristic relaxation time
Continuous GPS
Interferometric synthetic aperture radar
Geodetic time series
Three Sisters volcano
topic Inter-eruptive deformation
Characteristic relaxation time
Continuous GPS
Interferometric synthetic aperture radar
Geodetic time series
Three Sisters volcano
description A classical inflation-eruption-deflation cycle of a volcano is useful to conceptualize the time-evolving 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 inter-eruptive 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 ∼1018 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
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/227261
url http://hdl.handle.net/10261/227261
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
MINECO/CGL2014/58821‐C2‐1‐R
MINECO/PGC2018/095154‐B‐I00
MINECO/BES2015/074228
https://doi.org/10.3389/feart.2020.577588
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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