DOI: 10.1002/2015GL063027
论文题名: Volcanic ash concentration during the 12 August 2011 Etna eruption
作者: Scollo S. ; Boselli A. ; Coltelli M. ; Leto G. ; Pisani G. ; Prestifilippo M. ; Spinelli N. ; Wang X.
刊名: Geophysical Research Letters
ISSN: 0094-8731
EISSN: 1944-8462
出版年: 2015
卷: 42, 期: 8 起始页码: 2634
结束页码: 2641
语种: 英语
英文关键词: Etna
; lava fountain events
; volcanic ash concentration
Scopus关键词: Nonlinear analysis
; Sea level
; Security systems
; Ash concentrations
; Etna
; Explosive eruption
; Lava fountains
; Lidar measurements
; Video surveillance systems
; Volcanic ash
; Volcanic ash forecasting
; Volcanoes
; concentration (composition)
; discharge
; lidar
; plume
; volcanic ash
; volcanic eruption
; Catania [Sicily]
; Etna
; Italy
; Sicily
英文摘要: Mount Etna, in Italy, is one of the most active volcanoes in the world and an ideal laboratory to improve volcano ash monitoring and forecasting. During the volcanic episode on 12 August 2011, an eruption column rose up to several kilometers above sea level (asl), and the volcanic plume dispersed to the southeast. From the video-surveillance system, we were able to estimate variations in the column height (peak value of 9.5 ± 0.5 km above sea level) with time. We derived the time-varying discharge rate (peak value of 60 m3 s-1) and determined the ash concentration using a volcanic ash dispersal model. The modeled ash concentration was compared with lidar measurements using different particle effective radius, and differences are within the error bars. Volcanic ash concentrations range from 0.5 to 35.5 × 10-3 g m-3. The comparison highlights that to improve volcanic ash forecasting during volcanic crises it is necessary to take into account the time-varying discharge rate of explosive eruptions. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929509687&doi=10.1002%2f2015GL063027&partnerID=40&md5=9946e71ac27b8b40d1b75d88f63ab440
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8347
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: Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Etneo, Sezione di Catania, Catania, Italy
Recommended Citation:
Scollo S.,Boselli A.,Coltelli M.,et al. Volcanic ash concentration during the 12 August 2011 Etna eruption[J]. Geophysical Research Letters,2015-01-01,42(8).