The dynamics of a long-lasting effusive eruption modulated by Earth tides

Stéphanie Dumont; Jean Louis Le Mouël; Vincent Courtillot; Fernando Lopes; Freysteinn Sigmundsson; Diego Coppola; Eva P.S. Eibl; Christopher J. Bean

doi:10.1016/j.epsl.2020.116145

The dynamics of a long-lasting effusive eruption modulated by Earth tides

Stéphanie Dumont^*, Jean Louis Le Mouël, Vincent Courtillot, Fernando Lopes, Freysteinn Sigmundsson, Diego Coppola, Eva P.S. Eibl, Christopher J. Bean

^*Corresponding author for this work

Science Institute

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Deciphering eruptive dynamics in near-real time is essential when dealing with hazard assessment and population evacuation. Recognition of specific patterns in time-series measured during volcanic activity may help decipher distinctive behavior at active volcanoes, providing insights into the underlying driving mechanisms. Multi-parameter data sets usually agree on the overall trend characterizing the temporal evolution of an eruption providing insights into the first-order eruptive dynamics. However, second-order variations detected in different data sets remain often poorly understood. The 2014-2015 Holuhraun eruption (Iceland) offers an excellent opportunity to investigate the dynamics of a long-lasting effusive eruption. We analyze the seismic tremor and the volcanic radiated power emitted by the lava field during the 6 months of the eruption using Singular Spectrum Analysis (SSA). In both geophysical time-series, we identify periods from ∼5 to ∼32 days coinciding with periods of Earth tides. Here we show that ∼50% of both signals are composed of tidal periods suggesting that magma movements follow frequencies imposed by lunisolar forces within the crust and at Earth's surface.

Original language	English
Article number	116145
Journal	Earth and Planetary Science Letters
Volume	536
DOIs	https://doi.org/10.1016/j.epsl.2020.116145
Publication status	Published - 15 Apr 2020

Bibliographical note

Funding Information:
We thank the Editor Miaki Ishii for handling this manuscript and Gianluca Sottili and another anonymous reviewer for their thoughtful comments. SD would like to thank the Funda??o para a Ci?ncia e a Tecnologia (FCT) for his financial support through the postdoctoral grant (SFRH/BPD/17714/2016), as part of Human Capital Operating Programme (POCH) and the European Union. This work was supported by the Instituto Dom Luiz (IDL) through the FCT project UIDB/50019/2020 and partly supported by the H2020 project EUROVOLC, funded by the European Commission (Grant 731070). This is IPGP contribution number 4109. S.D. led this research and the writing. S.D. performed the SSA analysis with F.L. J.L.L.M. F.L. and V.C. helped with the identification of tidal periods and the mechanism. F.S. contributed to the evaluation of the SSA analysis and the tidal effects on volcanoes. E.P.S.E. and C.J.B. analyzed the seismic data and D.C. the volcanic radiated power. All authors contributed to discuss the results and the writing of this manuscript.

Funding Information:
We thank the Editor Miaki Ishii for handling this manuscript and Gianluca Sottili and another anonymous reviewer for their thoughtful comments. SD would like to thank the Fundação para a Ciência e a Tecnologia (FCT) for his financial support through the postdoctoral grant ( SFRH/BPD/17714/2016 ), as part of Human Capital Operating Programme (POCH) and the European Union. This work was supported by the Instituto Dom Luiz (IDL) through the FCT project UIDB/50019/2020 and partly supported by the H2020 project EUROVOLC, funded by the European Commission (Grant 731070 ). This is IPGP contribution number 4109 .

Publisher Copyright:
© 2020 Elsevier B.V.

Other keywords

Earth tides
effusive eruption
Holuhraun
lava flows
seismic tremor
thermal anomalies

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10.1016/j.epsl.2020.116145

Cite this

@article{280756a8ef5447fbac1261e14af34e6c,

title = "The dynamics of a long-lasting effusive eruption modulated by Earth tides",

abstract = "Deciphering eruptive dynamics in near-real time is essential when dealing with hazard assessment and population evacuation. Recognition of specific patterns in time-series measured during volcanic activity may help decipher distinctive behavior at active volcanoes, providing insights into the underlying driving mechanisms. Multi-parameter data sets usually agree on the overall trend characterizing the temporal evolution of an eruption providing insights into the first-order eruptive dynamics. However, second-order variations detected in different data sets remain often poorly understood. The 2014-2015 Holuhraun eruption (Iceland) offers an excellent opportunity to investigate the dynamics of a long-lasting effusive eruption. We analyze the seismic tremor and the volcanic radiated power emitted by the lava field during the 6 months of the eruption using Singular Spectrum Analysis (SSA). In both geophysical time-series, we identify periods from ∼5 to ∼32 days coinciding with periods of Earth tides. Here we show that ∼50% of both signals are composed of tidal periods suggesting that magma movements follow frequencies imposed by lunisolar forces within the crust and at Earth's surface.",

keywords = "Earth tides, effusive eruption, Holuhraun, lava flows, seismic tremor, thermal anomalies",

author = "St{\'e}phanie Dumont and {Le Mou{\"e}l}, {Jean Louis} and Vincent Courtillot and Fernando Lopes and Freysteinn Sigmundsson and Diego Coppola and Eibl, {Eva P.S.} and Bean, {Christopher J.}",

note = "Funding Information: We thank the Editor Miaki Ishii for handling this manuscript and Gianluca Sottili and another anonymous reviewer for their thoughtful comments. SD would like to thank the Funda??o para a Ci?ncia e a Tecnologia (FCT) for his financial support through the postdoctoral grant (SFRH/BPD/17714/2016), as part of Human Capital Operating Programme (POCH) and the European Union. This work was supported by the Instituto Dom Luiz (IDL) through the FCT project UIDB/50019/2020 and partly supported by the H2020 project EUROVOLC, funded by the European Commission (Grant 731070). This is IPGP contribution number 4109. S.D. led this research and the writing. S.D. performed the SSA analysis with F.L. J.L.L.M. F.L. and V.C. helped with the identification of tidal periods and the mechanism. F.S. contributed to the evaluation of the SSA analysis and the tidal effects on volcanoes. E.P.S.E. and C.J.B. analyzed the seismic data and D.C. the volcanic radiated power. All authors contributed to discuss the results and the writing of this manuscript. Funding Information: We thank the Editor Miaki Ishii for handling this manuscript and Gianluca Sottili and another anonymous reviewer for their thoughtful comments. SD would like to thank the Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia (FCT) for his financial support through the postdoctoral grant ( SFRH/BPD/17714/2016 ), as part of Human Capital Operating Programme (POCH) and the European Union. This work was supported by the Instituto Dom Luiz (IDL) through the FCT project UIDB/50019/2020 and partly supported by the H2020 project EUROVOLC, funded by the European Commission (Grant 731070 ). This is IPGP contribution number 4109 . Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

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doi = "10.1016/j.epsl.2020.116145",

language = "English",

volume = "536",

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T1 - The dynamics of a long-lasting effusive eruption modulated by Earth tides

AU - Dumont, Stéphanie

AU - Le Mouël, Jean Louis

AU - Courtillot, Vincent

AU - Lopes, Fernando

AU - Sigmundsson, Freysteinn

AU - Coppola, Diego

AU - Eibl, Eva P.S.

AU - Bean, Christopher J.

N1 - Funding Information: We thank the Editor Miaki Ishii for handling this manuscript and Gianluca Sottili and another anonymous reviewer for their thoughtful comments. SD would like to thank the Funda??o para a Ci?ncia e a Tecnologia (FCT) for his financial support through the postdoctoral grant (SFRH/BPD/17714/2016), as part of Human Capital Operating Programme (POCH) and the European Union. This work was supported by the Instituto Dom Luiz (IDL) through the FCT project UIDB/50019/2020 and partly supported by the H2020 project EUROVOLC, funded by the European Commission (Grant 731070). This is IPGP contribution number 4109. S.D. led this research and the writing. S.D. performed the SSA analysis with F.L. J.L.L.M. F.L. and V.C. helped with the identification of tidal periods and the mechanism. F.S. contributed to the evaluation of the SSA analysis and the tidal effects on volcanoes. E.P.S.E. and C.J.B. analyzed the seismic data and D.C. the volcanic radiated power. All authors contributed to discuss the results and the writing of this manuscript. Funding Information: We thank the Editor Miaki Ishii for handling this manuscript and Gianluca Sottili and another anonymous reviewer for their thoughtful comments. SD would like to thank the Fundação para a Ciência e a Tecnologia (FCT) for his financial support through the postdoctoral grant ( SFRH/BPD/17714/2016 ), as part of Human Capital Operating Programme (POCH) and the European Union. This work was supported by the Instituto Dom Luiz (IDL) through the FCT project UIDB/50019/2020 and partly supported by the H2020 project EUROVOLC, funded by the European Commission (Grant 731070 ). This is IPGP contribution number 4109 . Publisher Copyright: © 2020 Elsevier B.V.

PY - 2020/4/15

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N2 - Deciphering eruptive dynamics in near-real time is essential when dealing with hazard assessment and population evacuation. Recognition of specific patterns in time-series measured during volcanic activity may help decipher distinctive behavior at active volcanoes, providing insights into the underlying driving mechanisms. Multi-parameter data sets usually agree on the overall trend characterizing the temporal evolution of an eruption providing insights into the first-order eruptive dynamics. However, second-order variations detected in different data sets remain often poorly understood. The 2014-2015 Holuhraun eruption (Iceland) offers an excellent opportunity to investigate the dynamics of a long-lasting effusive eruption. We analyze the seismic tremor and the volcanic radiated power emitted by the lava field during the 6 months of the eruption using Singular Spectrum Analysis (SSA). In both geophysical time-series, we identify periods from ∼5 to ∼32 days coinciding with periods of Earth tides. Here we show that ∼50% of both signals are composed of tidal periods suggesting that magma movements follow frequencies imposed by lunisolar forces within the crust and at Earth's surface.

AB - Deciphering eruptive dynamics in near-real time is essential when dealing with hazard assessment and population evacuation. Recognition of specific patterns in time-series measured during volcanic activity may help decipher distinctive behavior at active volcanoes, providing insights into the underlying driving mechanisms. Multi-parameter data sets usually agree on the overall trend characterizing the temporal evolution of an eruption providing insights into the first-order eruptive dynamics. However, second-order variations detected in different data sets remain often poorly understood. The 2014-2015 Holuhraun eruption (Iceland) offers an excellent opportunity to investigate the dynamics of a long-lasting effusive eruption. We analyze the seismic tremor and the volcanic radiated power emitted by the lava field during the 6 months of the eruption using Singular Spectrum Analysis (SSA). In both geophysical time-series, we identify periods from ∼5 to ∼32 days coinciding with periods of Earth tides. Here we show that ∼50% of both signals are composed of tidal periods suggesting that magma movements follow frequencies imposed by lunisolar forces within the crust and at Earth's surface.

KW - Earth tides

KW - effusive eruption

KW - Holuhraun

KW - lava flows

KW - seismic tremor

KW - thermal anomalies

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DO - 10.1016/j.epsl.2020.116145

M3 - Article

AN - SCOPUS:85079150117

SN - 0012-821X

VL - 536

JO - Earth and Planetary Science Letters

JF - Earth and Planetary Science Letters

M1 - 116145

ER -

The dynamics of a long-lasting effusive eruption modulated by Earth tides

Abstract

Bibliographical note

Other keywords

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