Years to weeks of seismic unrest and magmatic intrusions precede monogenetic eruptions

Seismic, deformation, and gas activity (unrest) typically precedes volcanic eruptions. Tracking the changes of this activity with monitoring data makes it increasingly possible to successfully forecast eruptions from stratovolcanoes. However, this is not the case for monogenetic volcanoes. Eruptions...

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Detalhes bibliográficos
Autores: Marti Ribas, Josep, Costa, Fidel, Albert Mínguez, Helena
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/226517
Acesso em linha:https://hdl.handle.net/2445/226517
Access Level:acceso abierto
Palavra-chave:Vulcanisme
Sismologia
Geodinàmica
Magmatisme
Volcanism
Seismology
Geodynamics
Magmatism
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spelling Years to weeks of seismic unrest and magmatic intrusions precede monogenetic eruptionsMarti Ribas, JosepCosta, FidelAlbert Mínguez, HelenaVulcanismeSismologiaGeodinàmicaMagmatismeVolcanismSeismologyGeodynamicsMagmatismSeismic, deformation, and gas activity (unrest) typically precedes volcanic eruptions. Tracking the changes of this activity with monitoring data makes it increasingly possible to successfully forecast eruptions from stratovolcanoes. However, this is not the case for monogenetic volcanoes. Eruptions from these volcanoes tend to be small but are particularly difficult to anticipate since they occur at unexpected locations and there is very limited instrumental monitoring data. Many monogenetic volcanic fields occur in high-density, populated areas and/or tourist destinations, and thus even a small eruption can have a major economic and societal impact. We have gathered the available instrumental data for unrest and combined it with new historical accounts of seismicity. Our occurrences are mainly from high magmatic flux oceanic islands (Canary Islands, Iceland, Papua New Guinea, Mexico, and Japan). We find that seismic activity may start one or two years before eruption, but it intensifies at approximately two or three months, and one or two weeks. The petrological and geochemical characteristics of the deposits show that multiple magma batches interacted in a subvolcanic reservoir, and multiple intrusions occurred on a similar time scales to the seismicity. We propose a general model for these eruptions where early dike intrusions in the crust do not erupt (e.g., stalled intrusions) and make small plumbing systems, but they probably are key in creating a thermal and rheological pathway for later dikes to be able to reach the surface. These observations provide a conceptual framework for better anticipating monogenetic eruptions in similar settings and magmatic fluxes and should lead to improved strategies for mitigation of their associated hazards and risks.Geological Society of America2026202620162026info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion4 p.application/pdfhttps://hdl.handle.net/2445/226517Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1130/G37239.1Geology, 2016, vol. 44, num.3, p. 211-214https://doi.org/10.1130/G37239.1cc-by (c) Marti Ribas, Josep, 2016https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2265172026-05-29T05:05:01Z
dc.title.none.fl_str_mv Years to weeks of seismic unrest and magmatic intrusions precede monogenetic eruptions
title Years to weeks of seismic unrest and magmatic intrusions precede monogenetic eruptions
spellingShingle Years to weeks of seismic unrest and magmatic intrusions precede monogenetic eruptions
Marti Ribas, Josep
Vulcanisme
Sismologia
Geodinàmica
Magmatisme
Volcanism
Seismology
Geodynamics
Magmatism
title_short Years to weeks of seismic unrest and magmatic intrusions precede monogenetic eruptions
title_full Years to weeks of seismic unrest and magmatic intrusions precede monogenetic eruptions
title_fullStr Years to weeks of seismic unrest and magmatic intrusions precede monogenetic eruptions
title_full_unstemmed Years to weeks of seismic unrest and magmatic intrusions precede monogenetic eruptions
title_sort Years to weeks of seismic unrest and magmatic intrusions precede monogenetic eruptions
dc.creator.none.fl_str_mv Marti Ribas, Josep
Costa, Fidel
Albert Mínguez, Helena
author Marti Ribas, Josep
author_facet Marti Ribas, Josep
Costa, Fidel
Albert Mínguez, Helena
author_role author
author2 Costa, Fidel
Albert Mínguez, Helena
author2_role author
author
dc.subject.none.fl_str_mv Vulcanisme
Sismologia
Geodinàmica
Magmatisme
Volcanism
Seismology
Geodynamics
Magmatism
topic Vulcanisme
Sismologia
Geodinàmica
Magmatisme
Volcanism
Seismology
Geodynamics
Magmatism
description Seismic, deformation, and gas activity (unrest) typically precedes volcanic eruptions. Tracking the changes of this activity with monitoring data makes it increasingly possible to successfully forecast eruptions from stratovolcanoes. However, this is not the case for monogenetic volcanoes. Eruptions from these volcanoes tend to be small but are particularly difficult to anticipate since they occur at unexpected locations and there is very limited instrumental monitoring data. Many monogenetic volcanic fields occur in high-density, populated areas and/or tourist destinations, and thus even a small eruption can have a major economic and societal impact. We have gathered the available instrumental data for unrest and combined it with new historical accounts of seismicity. Our occurrences are mainly from high magmatic flux oceanic islands (Canary Islands, Iceland, Papua New Guinea, Mexico, and Japan). We find that seismic activity may start one or two years before eruption, but it intensifies at approximately two or three months, and one or two weeks. The petrological and geochemical characteristics of the deposits show that multiple magma batches interacted in a subvolcanic reservoir, and multiple intrusions occurred on a similar time scales to the seismicity. We propose a general model for these eruptions where early dike intrusions in the crust do not erupt (e.g., stalled intrusions) and make small plumbing systems, but they probably are key in creating a thermal and rheological pathway for later dikes to be able to reach the surface. These observations provide a conceptual framework for better anticipating monogenetic eruptions in similar settings and magmatic fluxes and should lead to improved strategies for mitigation of their associated hazards and risks.
publishDate 2016
dc.date.none.fl_str_mv 2016
2026
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/226517
url https://hdl.handle.net/2445/226517
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1130/G37239.1
Geology, 2016, vol. 44, num.3, p. 211-214
https://doi.org/10.1130/G37239.1
dc.rights.none.fl_str_mv cc-by (c) Marti Ribas, Josep, 2016
https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Marti Ribas, Josep, 2016
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 4 p.
application/pdf
dc.publisher.none.fl_str_mv Geological Society of America
publisher.none.fl_str_mv Geological Society of America
dc.source.none.fl_str_mv Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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