globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2020.116145
论文题名:
The dynamics of a long-lasting effusive eruption modulated by Earth tides
作者: Dumont S.; Le Mouël J.-L.; Courtillot V.; Lopes F.; Sigmundsson F.; Coppola D.; Eibl E.P.S.; Bean C.J.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 536
语种: 英语
中文关键词: Earth tides ; effusive eruption ; Holuhraun ; lava flows ; seismic tremor ; thermal 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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164951
Appears in Collections:气候变化与战略

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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

Recommended Citation:
Dumont S.,Le Mouël J.-L.,Courtillot V.,et al. The dynamics of a long-lasting effusive eruption modulated by Earth tides[J]. Earth and Planetary Science Letters,2020-01-01,536
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