DOI: 10.1002/2016GL067823
论文题名: Short term precursors of Strombolian explosions at Yasur volcano (Vanuatu)
作者: Battaglia J. ; Métaxian J.-P. ; Garaebiti E.
刊名: Geophysical Research Letters
ISSN: 0094-9310
EISSN: 1944-9041
出版年: 2016
卷: 43, 期: 5 起始页码: 1960
结束页码: 1965
语种: 英语
英文关键词: explosion precursors
; Strombolian explosions
; volcano seismology
Scopus关键词: Seismology
; Volcanoes
; Causal relationships
; Long-period events
; Pressure transfer
; Seismic wavefields
; Strombolian activity
; Surface explosions
; Transient events
; Volcano seismology
; Explosions
英文摘要: The seismic wavefield associated with Strombolian activity is usually dominated by explosion quakes (EQs), tremor, and various signals generated by surface phenomena. Looking at the seismicity recorded at Yasur volcano in 2008, we found that beside the transient events which occur simultaneously with surface explosions, the seismicity includes events related to a deeper process. These long period (LP) events form a family of similar events located below the southeastern part of the crater rim at a depth of about 700-1200 m below the summit. They are commonly followed by EQs with a variable delay. The examination of about 20,000 LP-EQ sequences at several stations near the summit shows that interevent delays follow distributions peaked around 11-12 s. This short delay compared to the relatively great source depth of the LPs favors a causal relationship linked to pressure transfer rather than gas slug propagation after nucleation at the LP source. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960344309&doi=10.1002%2f2016GL067823&partnerID=40&md5=9fa7b1f3f44e373df24962dca89c1a13
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10273
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Laboratoire Magmas et Volcans, Université Blaise Pascal, CNRS-IRD, OPGC, Aubière, France
Recommended Citation:
Battaglia J.,Métaxian J.-P.,Garaebiti E.. Short term precursors of Strombolian explosions at Yasur volcano (Vanuatu)[J]. Geophysical Research Letters,2016-01-01,43(5).