DOI: 10.1002/2014GL061887
论文题名: Laboratory experiments of forced plumes in a density-stratified crossflow and implications for volcanic plumes
作者: Carazzo G. ; Girault F. ; Aubry T. ; Bouquerel H. ; Kaminski E.
刊名: Geophysical Research Letters
ISSN: 0094-9440
EISSN: 1944-9171
出版年: 2014
卷: 41, 期: 24 起始页码: 8759
结束页码: 8766
语种: 英语
英文关键词: laboratory experiment
; Plinian column
; plume height
; stratified crossflow
Scopus关键词: Confined flow
; Risk assessment
; Risk perception
; Volcanoes
; Wind effects
; Cross flows
; Dimensionless velocity
; Empirical relationships
; Environmental parameter
; Laboratory experiments
; Plinian
; Plume heights
; Quantitative prediction
; Laboratories
; laboratory method
; plume
; risk assessment
; stratified flow
; transition zone
; volcanic eruption
; wind velocity
英文摘要: The mass eruption rate feeding a volcanic plume is commonly estimated from its maximum height. Winds are known to affect the column dynamics causing bending and hence reducing the maximum plume height for a given mass eruption rate. However, the quantitative predictions including wind effects on mass eruption rate estimates are not well constrained. To fill this gap, we present a series of new laboratory experiments on forced plumes rising in a density-stratified crossflow. We identify three dynamical regimes corresponding to increasing effect of wind on the plume rise. The transition from one regime to another is governed by two dimensionless velocity scales defined as a function of source and environmental parameters. The results are found consistent with the conditions of historical eruptions and provide new empirical relationships to estimate mass eruption rate from plume height in windy conditions, leading to valuable tools for eruption risk assessment. Key Points Laboratory experiments simulate a volcanic plume rising in a windy atmosphereIncreasing effect of wind leads to three dynamical regimes for the plumeWe present new relationships for estimating mass eruption rate from plume height ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921717770&doi=10.1002%2f2014GL061887&partnerID=40&md5=f33419a2b2cf10f949cb23f9341a283c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6704
Appears in Collections: 气候减缓与适应
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作者单位: Institut de Physique du Globe, Sorbonne Paris Cité Université Paris Diderot, CNRS UMR 7154, Paris, France
Recommended Citation:
Carazzo G.,Girault F.,Aubry T.,et al. Laboratory experiments of forced plumes in a density-stratified crossflow and implications for volcanic plumes[J]. Geophysical Research Letters,2014-01-01,41(24).