DOI: 10.1002/2014GL060623
论文题名: Eruptive processes leading to the most explosive lava fountain at Etna volcano: The 23 November 2013 episode
作者: Bonaccorso A. ; Calvari S. ; Linde A. ; Sacks S.
刊名: Geophysical Research Letters
ISSN: 0094-9922
EISSN: 1944-9653
出版年: 2014
卷: 41, 期: 14 起始页码: 4912
结束页码: 4919
语种: 英语
英文关键词: Etna volcano
; explosive end-member
; lava fountains
; strain
Scopus关键词: Explosives
; Strain
; Eruptive process
; Etna volcanos
; Lava fountains
; Thermal images
; Fountains
; gas flow
; height determination
; image analysis
; lava flow
; magma
; volcanic eruption
; Catania [Sicily]
; Etna
; Italy
; Sicily
英文摘要: The 23 November 2013 lava fountain at Etna volcano was the most explosive of the last 44 episodes that have occurred at Etna in 2011-2013. We infer the total magma volume erupted by thermal images analysis and show that it was characterized by a very high time-averaged-discharge-rate (TADR) of ~360 m 3 s-1, having erupted ~1.6 × 106 m 3 of dense-rock equivalent magma volume in just 45 min, which is more than 3 times the TADR observed during previous episodes. Two borehole dilatometers confirmed the eruption dynamics inferred from the thermal images. When compared to the other lava fountains, this episode can be considered as the explosive end-member. However, the erupted volume was still comparable to the other lava fountain events. We interpret that the 23 November explosive end-member event was caused by more primitive and gas-rich magma entering the system, as demonstrated by the exceptional height reached by the lava fountain. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904518278&doi=10.1002%2f2014GL060623&partnerID=40&md5=8e9557e9e936dccc81a71a13f1ecdc54
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7186
Appears in Collections: 气候减缓与适应
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作者单位: Sezione di Catania, Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Etneo, Catania, Italy
Recommended Citation:
Bonaccorso A.,Calvari S.,Linde A.,et al. Eruptive processes leading to the most explosive lava fountain at Etna volcano: The 23 November 2013 episode[J]. Geophysical Research Letters,2014-01-01,41(14).