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DOI10.1016/j.epsl.2020.116145
The dynamics of a long-lasting effusive eruption modulated by Earth tides
Dumont S.; Le Mouël J.-L.; Courtillot V.; Lopes F.; Sigmundsson F.; Coppola D.; Eibl E.P.S.; Bean C.J.
发表日期2020
ISSN0012821X
卷号536
英文摘要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. © 2020 Elsevier B.V.
关键词Earth tideseffusive eruptionHoluhraunlava flowsseismic tremorthermal anomalies
英文关键词Dynamics; Pattern recognition; Seismology; Spectrum analysis; Tide gages; Time series; Volcanoes; Earth tide; Effusive eruptions; Holuhraun; Lava flows; Seismic tremor; Thermal anomalies; Tides; Earth tide; lava flow; magma; temperature anomaly; temporal evolution; volcanic eruption; Holuhraun; Iceland
语种英语
来源期刊Earth and Planetary Science Letters
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/202573
作者单位University of Beira Interior, Covilhã, Portugal; Instituto Dom Luiz (IDL), Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal; Institut de Physique du Globe de Paris, Paris, France; Institute of Earth Sciences, University of Iceland, Reykjavik, Iceland; Dipartimento di Scienze della Terra, Universita di Torino, Italy; NatRisk, Centro Interdipartimentale sui Rischi Naturali in Ambiente Montano e Collinare, Università degli Studi di Torino, Italy; University of Potsdam, Potsdam, Germany; Geophysics Section, Dublin Institute for Advanced Studies, Dublin, Ireland
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Dumont S.,Le Mouël J.-L.,Courtillot V.,et al. The dynamics of a long-lasting effusive eruption modulated by Earth tides[J],2020,536.
APA Dumont S..,Le Mouël J.-L..,Courtillot V..,Lopes F..,Sigmundsson F..,...&Bean C.J..(2020).The dynamics of a long-lasting effusive eruption modulated by Earth tides.Earth and Planetary Science Letters,536.
MLA Dumont S.,et al."The dynamics of a long-lasting effusive eruption modulated by Earth tides".Earth and Planetary Science Letters 536(2020).
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