DOI: 10.1002/2013GL059182
论文题名: Fusion characteristics of volcanic ash relevant to aviation hazards
作者: Song W. ; Hess K.-U. ; Damby D.E. ; Wadsworth F.B. ; Lavallée Y. ; Cimarelli C. ; Dingwell D.B.
刊名: Geophysical Research Letters
ISSN: 0094-10204
EISSN: 1944-9935
出版年: 2014
卷: 41, 期: 7 起始页码: 2326
结束页码: 2333
语种: 英语
英文关键词: ash deposition
; fusion temperatures
; jet engine
; Santiaguito Volcano
; sintering
; volcanic ash
Scopus关键词: Deposition
; Jet engines
; Sintering
; Ash deposition
; Characteristic temperature
; Fusion characteristics
; Fusion temperature
; Heating microscope
; Rheological analysis
; Sintering behaviors
; Volcanic ash
; Volcanoes
; atmospheric pollution
; chemical composition
; engine
; hazard
; heating
; high temperature
; melting
; risk assessment
; volcanic ash
; volcanic eruption
; Guatemala [Central America]
; Quezaltenango
; Santiaguito
英文摘要: The fusion dynamics of volcanic ash strongly impacts deposition in hot parts of jet engines. In this study, we investigate the sintering behavior of volcanic ash using natural ash of intermediate composition, erupted in 2012 at Santiaguito Volcano, Guatemala. A material science procedure was followed in which we monitored the geometrical evolution of cylindrical-shaped volcanic ash compact upon heating from 50 to 1400°C in a heating microscope. Combined morphological, mineralogical, and rheological analyses helped define the evolution of volcanic ash during fusion and sintering and constrain their sticking potential as well as their ability to flow at characteristic temperatures. For the ash investigated, 1240°C marks the onset of adhesion and flowability the much higher fusibility of ash compared to that of typical test sands demonstrates for the need of a more extensive fusion characterization of volcanic ash in order to mitigate the risk posed on jet engine operation. Key Points The melting behavior of a recently erupted volcanic ash is characterized The melting evolution is described in terms of two processes and three main stages The high-temperature depositional behavior of volcanic ash is analyzed © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84897358555&doi=10.1002%2f2013GL059182&partnerID=40&md5=dbd9390029ec6bac88d909835aa59a1f
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7468
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Earth and Environmental Sciences, Ludwig-Maximilians-Universität, Munich, Germany
Recommended Citation:
Song W.,Hess K.-U.,Damby D.E.,et al. Fusion characteristics of volcanic ash relevant to aviation hazards[J]. Geophysical Research Letters,2014-01-01,41(7).