气候变化领域集成服务门户(CCPortal): Insights Into Mount Etna December 2018 Eruption From Joint Inversion of Deformation and Gravity Data

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DOI	10.1029/2020GL087786
	Insights Into Mount Etna December 2018 Eruption From Joint Inversion of Deformation and Gravity Data
	Chauhan M.S.; Cannavó F.; Carbone D.; Greco F.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	We present results of the joint analysis of ground deformation and superconducting gravity data encompassing Etna's December 2018 eruption. The horizontal ground deformation points to a mechanism of dike opening. Accordingly, we consider forward analytical models describing the effects of a tensile dislocation and use two data inversion approaches, based on heuristic and probabilistic methods. The observed changes can be explained assuming the intrusion of a fluid lighter than bubble-free magma, along a dike-like structure. However, the poor fit to the vertical deformation and the discrepancy between bulk volume increase, deduced by the data inversion (some tens of millions of m3), and volume emitted through effusive activity (∼1 × 106 m3) suggest that a more complex mechanism led to the eruption, involving partial inelastic accommodation of the strain and the formation of void space through increase in the fracturing rate of the medium. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Gravitation; Heuristic methods; Hydraulic structures; Levees; Complex mechanisms; Data inversion; Fracturing rate; Ground deformations; Joint analysis; Joint inversion; Probabilistic methods; Vertical deformation; Deformation; data inversion; deformation; dike; gravity field; igneous intrusion; magma; superconductivity; void; volcanic eruption; volume change; Catania [Sicily]; Etna; Italy; Sicily
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169896
作者单位	Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania-Osservatorio Etneo, Catania, Italy
推荐引用方式 GB/T 7714	Chauhan M.S.,Cannavó F.,Carbone D.,et al. Insights Into Mount Etna December 2018 Eruption From Joint Inversion of Deformation and Gravity Data[J],2020,47(16).
APA	Chauhan M.S.,Cannavó F.,Carbone D.,&Greco F..(2020).Insights Into Mount Etna December 2018 Eruption From Joint Inversion of Deformation and Gravity Data.Geophysical Research Letters,47(16).
MLA	Chauhan M.S.,et al."Insights Into Mount Etna December 2018 Eruption From Joint Inversion of Deformation and Gravity Data".Geophysical Research Letters 47.16(2020).