DOI: 10.1002/2015JD024093
论文题名: Major impact of volcanic gases on the chemical composition of precipitation in Iceland during the 2014–2015 Holuhraun eruption
作者: Stefánsson A. ; Stefánsson G. ; Keller N.S. ; Barsotti S. ; Sigurdsson Á. ; Thorláksdóttir S.B. ; Pfeffer M.A. ; Eiríksdóttir E.S. ; Jónasdóttir E.B. ; von Löwis S. ; Gíslason S.R.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2017
卷: 122, 期: 3 起始页码: 1971
结束页码: 1982
语种: 英语
英文关键词: atmospheric precipitation
; Bárdarbunga
; Holuhraun
; Iceland
; volcanic eruption
; volcanic gas
Scopus关键词: aerosol
; chemical composition
; concentration (composition)
; dissolution
; dust
; mixing
; precipitation (climatology)
; seawater
; spatiotemporal analysis
; volcanic eruption
; volcanic gas
; Bardarbunga
; Holuhraun
; Iceland
英文摘要: The Holuhraun eruption in 2014–2015 was the largest in Iceland for more than 200 years. It resulted in emissions of large quantities of volcanic gases into the atmosphere (11 megaton (Mt) SO2, 0.1 Mt HCl, and 0.05 Mt HF). During the eruption the volcanic gases had major effects on F, SO4 and to a lesser extent Cl concentrations in precipitaxtion throughout Iceland, effects not observed in recent decades. The concentrations of F, Cl, and SO4 (n = 705) reached values of 444 µm 12,270 µm, and 17,324 µm during the eruption and were on average ~20 times higher for F and SO4 and much lower for Cl compared to preeruption times. The concentrations of major cations (Si, Na, K, Ca, Mg, Al, and Fe) (n = 151) in the precipitation were taken as having originated from seawater spray and dissolution of rock dust and aerosol. Based on the mixing model developed here, it is demonstrated that the source of the enrichment of F and SO4 was indeed the volcanic gas emissions with >60–100 mol % of SO4 and F in the precipitation originated from volcanic gas, whereas the Cl originated mostly from seawater spray, making the volcanic gas input of Cl relatively less important than for F and SO4. The results showed that large volcanic eruptions can have major effects on atmospheric chemistry and impact the composition of precipitation. ©2017. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62709
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Institute of Earth Sciences, University of Iceland, Reykjavík, Iceland; Icelandic Meteorological Office, Reykjavík, Iceland
Recommended Citation:
Stefánsson A.,Stefánsson G.,Keller N.S.,et al. Major impact of volcanic gases on the chemical composition of precipitation in Iceland during the 2014–2015 Holuhraun eruption[J]. Journal of Geophysical Research: Atmospheres,2017-01-01,122(3)