DOI: 10.1002/2016GL071153
论文题名: Preexplosive conduit conditions during the 2010 eruption of Merapi volcano (Java, Indonesia)
作者: Drignon M.J. ; Bechon T. ; Arbaret L. ; Burgisser A. ; Komorowski J.-C. ; Martel C. ; Miller H. ; Yaputra R.
刊名: Geophysical Research Letters
ISSN: 0094-8401
EISSN: 1944-8132
出版年: 2016
卷: 43, 期: 22 起始页码: 11595
结束页码: 11602
语种: 英语
英文关键词: degassing
; magma
; pumice
; volcanic conduit
Scopus关键词: Abrasives
; Degassing
; Domes
; Explosives
; Explosive events
; Explosivity
; Gravitational collapse
; magma
; Merapi volcanos
; Textural analysis
; Volcanic conduit
; Water content measurements
; Volcanoes
英文摘要: The 2010 eruption is the largest explosive event at Merapi volcano since 1872. The high energy of the initial 26 October explosions cannot be explained by simple gravitational collapse, and the paroxysmal explosions were preceded by the growth of a lava dome not large enough to ensure significant pressurization of the system. We sampled pumice from these explosive phases and determined the preexplosive depths of the pumices by combining textural analyses with glass water content measurements. Our results indicate that the magma expelled was tapped from depths of several kilometers. Such depths are much greater than those involved in the pre-2010 effusive activity. We propose that the water-rich magma liberated enough gas to sustain the explosivity. Our results imply that the explosive potential of volcanoes having dome-forming, effusive activity is linked to the depth from which fresh magma can be evacuated in a single explosion, regardless of the evacuated volume. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85003794118&doi=10.1002%2f2016GL071153&partnerID=40&md5=ce12c3ffc4e718740d765266e649a753
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9364
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: College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States
Recommended Citation:
Drignon M.J.,Bechon T.,Arbaret L.,et al. Preexplosive conduit conditions during the 2010 eruption of Merapi volcano (Java, Indonesia)[J]. Geophysical Research Letters,2016-01-01,43(22).