DOI: 10.1002/2016GL071501
论文题名: Flow-to-fracture transition in a volcanic mush plug may govern normal eruptions at Stromboli
作者: Suckale J. ; Keller T. ; Cashman K.V. ; Persson P.-O.
刊名: Geophysical Research Letters
ISSN: 0094-8346
EISSN: 1944-8077
出版年: 2016
卷: 43, 期: 23 起始页码: 12071
结束页码: 12081
语种: 英语
英文关键词: explosive basaltic volcanism
; plug
; slug
; Stromboli volcano
; Strombolian eruptions
; three-phase flow
Scopus关键词: Crystalline materials
; Petrology
; Basaltic volcanism
; Plug
; Slug
; Stromboli volcano
; Strombolian eruptions
; Three-phase flow
; Volcanoes
; Gastropoda
英文摘要: Stromboli is a model volcano for studying eruptions driven by degassing. The current paradigm posits that Strombolian eruptions represent the bursting of gas slugs ascending through melt-filled conduits, but petrological observations show that magma at shallow depth is crystalline enough to form a three-phase plug consisting of crystals, bubbles, and melt. We combine a 1-D model of gas flushing a crystalline mush with a 3-D stress model. Our results suggest that localized gas segregation establishes hot conduits of mobile magma within a stagnant plug. The plug is prone to tensile failure controlled by gas overpressure and tectonic stress, with failure most likely beneath the observed vent locations. We hence argue that Strombolian eruptions are related to plug failure rather than flow. Our proposed three-phase model of the shallow plumbing system may provide a promising framework for integrating geophysical, petrological, and morphological observations at Stromboli and in open-system volcanism more generally. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006905534&doi=10.1002%2f2016GL071501&partnerID=40&md5=b5be466b78e68b1e41f9f18af7dc0dc1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9309
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: Department of Geophysics, Stanford University, Stanford, CA, United States
Recommended Citation:
Suckale J.,Keller T.,Cashman K.V.,et al. Flow-to-fracture transition in a volcanic mush plug may govern normal eruptions at Stromboli[J]. Geophysical Research Letters,2016-01-01,43(23).