DOI: 10.1002/2015GL066426
论文题名: Experimental laboratory study on the formation of multiple shock waves observed during volcanic eruptions
作者: Médici E.F. ; Waite G.P.
刊名: Geophysical Research Letters
ISSN: 0094-9485
EISSN: 1944-9216
出版年: 2016
卷: 43, 期: 1 起始页码: 85
结束页码: 92
语种: 英语
英文关键词: shock tube
; shock waves
; supersonic jets
Scopus关键词: Dynamics
; Fighter aircraft
; Shock tubes
; Supersonic aerodynamics
; Volcanoes
; Controlled laboratories
; Experimental laboratory
; Potential mechanism
; Shock tube experiment
; Shock-wave dynamics
; Single discharges
; Supersonic jets
; Volcanic eruptions
; Shock waves
; aircraft
; energy flux
; experimental study
; laboratory method
; pressure field
; shock wave
; source parameters
; volcanic eruption
英文摘要: Sequences of multiple pressure waves have recently been observed in different explosive volcanic eruptions, but their origin is not clearly understood. Although a pulsating type of eruption with many individual discharges can produce this effect, the formation of multiple shock waves could also result from a single discharge through (1) the dynamics of the shock wave itself, (2) the coupled shock wave-supersonic jet dynamics, or (3) a combination of these factors. Shock tube experiments were performed to evaluate these potential mechanisms under controlled laboratory conditions. The amount of energy released was varied to achieve different weak shock wave conditions and to promote formation of single or multiple shock waves through both shock wave dynamics and coupled shock wave-supersonic jet interactions. Our analysis indicates that both mechanisms may play a role in the formation of multiple pressure waves in low-intensity eruptions. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956595453&doi=10.1002%2f2015GL066426&partnerID=40&md5=28ff1f042a88fadcfd403c4f0b162022
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10448
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 Mechanical Engineering-Engineering Mechanics, Michigan Technological University, Houghton, MI, United States
Recommended Citation:
Médici E.F.,Waite G.P.. Experimental laboratory study on the formation of multiple shock waves observed during volcanic eruptions[J]. Geophysical Research Letters,2016-01-01,43(1).