气候变化领域集成服务门户(CCPortal): On the Fluctuations in Volcanic Plumes

CCPortal

DOI	10.1029/2020GL090594
	On the Fluctuations in Volcanic Plumes
	Woitischek J.; Edmonds M.; Woods A.W.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:3
英文摘要	Some basaltic open vent volcanoes show that spectroscopic SO2 measurements of a volcanic gas plume are characterized by a fluctuating signal. Understanding the origin of these fluctuations is of great interest for interpreting volcanic gas emission regimes. Although some fluctuations may be associated with intermittency in the source flux, some may be associated with the turbulence in the flow. A simple laboratory experiment, in which we release dye pulses into a turbulent wake in a small water-filled channel, suggests that when the intermittency of the source has comparable or smaller timescale as the turbulence, the fluctuations are similar, whereas when the intermittency of the source has longer timescale than the turbulence, the fluctuations can be distinguished. We also present some small-scale laboratory experiments of turbulent buoyant plumes produced from a steady source; these demonstrate a time-fluctuating concentration of source fluid downstream and the fluctuation period tends to increase with distance. © 2020. The Authors.
英文关键词	Sulfur dioxide; Turbulence; Fluctuating signals; Laboratory experiments; Measurements of; Turbulent buoyant plume; Turbulent wake; Volcanic gas emissions; Volcanic gas plume; Volcanic plume; Volcanoes
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169155
作者单位	BP Institute, University of Cambridge, Cambridge, United Kingdom; Department of Earth Sciences, University of Cambridge, Cambridge, United Kingdom
推荐引用方式 GB/T 7714	Woitischek J.,Edmonds M.,Woods A.W.. On the Fluctuations in Volcanic Plumes[J],2021,48(3).
APA	Woitischek J.,Edmonds M.,&Woods A.W..(2021).On the Fluctuations in Volcanic Plumes.Geophysical Research Letters,48(3).
MLA	Woitischek J.,et al."On the Fluctuations in Volcanic Plumes".Geophysical Research Letters 48.3(2021).