DOI: 10.1002/grl.50692
论文题名: New data from borehole strainmeters to infer lava fountain sources (Etna 2011-2012)
作者: Bonaccorso A. ; Currenti G. ; Linde A. ; Sacks S.
刊名: Geophysical Research Letters
ISSN: 0094-8804
EISSN: 1944-8535
出版年: 2013
卷: 40, 期: 14 起始页码: 3579
结束页码: 3584
语种: 英语
英文关键词: borehole strainmeters
; Etna volcano
; lava fountain eruptions
; shallow plumbing system
Scopus关键词: Eruptive activity
; Eruptive events
; Etna volcanos
; Lava fountains
; Numerical computations
; Plumbing Systems
; Shallow sources
; Volumetric strain
; Fountains
; Strain measurement
; borehole
; compression
; computer simulation
; data set
; finite element method
; lava
; magma
; tilt
; volcanic eruption
; volcano
; Catania [Sicily]
; Etna
; Italy
; Sicily
英文摘要: In January 2011, eruptive activity resumed at Etna producing a new phase with frequent lava fountain episodes until April 2012. In November 2011, the first two borehole strainmeters were installed, which detected negative strain changes (~0.15-0.8 μstrain) during the paroxysmal events. A Finite Element Model was set up to estimate accurately the tilt and volumetric strain, taking into account the real profile of the volcano and the elastic medium heterogeneity. The numerical computations indicated an elongated depressurizing source located at 0 km b.s.l., which underwent a volume change of ~2 × 106 m3 which is the most of the magma volume erupted, while a smaller remaining part is accommodated by the magma compressibility. This shallow source cannot accumulate large magma volumes and, thus, favors short-term periodic eruptive events with a fairly constant balance between the refilling and the erupted magma. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880196932&doi=10.1002%2fgrl.50692&partnerID=40&md5=a77bc3ca9cb1c29a5e2cc80441e31bda
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6068
Appears in Collections: 气候减缓与适应
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作者单位: Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania-Osservatorio Etneo, Piazza Roma, 295123 Catania, Italy
Recommended Citation:
Bonaccorso A.,Currenti G.,Linde A.,et al. New data from borehole strainmeters to infer lava fountain sources (Etna 2011-2012)[J]. Geophysical Research Letters,2013-01-01,40(14).