DOI: 10.1002/grl.50822
论文题名: Impact of known local and tropical volcanic eruptions of the past millennium on the WAIS Divide microparticle record
作者: Koffman B.G. ; Kreutz K.J. ; Kurbatov A.V. ; Dunbar N.W.
刊名: Geophysical Research Letters
ISSN: 0094-8617
EISSN: 1944-8348
出版年: 2013
卷: 40, 期: 17 起始页码: 4712
结束页码: 4716
语种: 英语
英文关键词: climate
; Ice core
; microparticle
; particle size distribution
; volcanic eruption
Scopus关键词: climate
; Ice core
; Micro particles
; Particle distributions
; Relative location
; Volcanic ash particles
; Volcanic eruptions
; West antarctic ice sheets
; Atmospheric movements
; Deposition
; Dust
; Particle size analysis
; Tropics
; Volcanoes
; Ice
; aerosol
; ice core
; ice sheet
; latitude
; particle size
; size distribution
; sulfate
; volcanic ash
; volcanic eruption
; Antarctica
; Indonesia
; Lesser Sunda Islands
; Sumbawa
; Sunda Isles
; Tambora
; West Antarctic Ice Sheet
; West Antarctica
; West Nusa Tenggara
英文摘要: We present a new method for inferring the relative location (low- versus high-southern latitude), and therefore the potential climatic impact, of past eruptions based on the particle size distribution (PSD) of micrometer-sized ash measured continuously in the West Antarctic Ice Sheet (WAIS) Divide ice core. We find that particles from a high-southern latitude eruption (Buckle Island, Antarctica (1839 Common Era, C.E.)) have a PSD with mode diameter ≥5 μm coarser than the background dust (mode 5.1 μm), while ash particles originating from stratospheric tropical eruptions, including Tambora (1815 C.E.), Kuwae (1458 C.E.), and Unknown (1258 C.E.), have PSDs with mode diameters ∼0.6-1.5 μm finer than the background. In addition, volcanic ash particles from global-scale eruptions are deposited ∼3-6 months earlier and over a shorter time interval than sulfate aerosols. We hypothesize that this phasing is driven by differences in atmospheric processing and aerosol/particle transport and deposition. Key Points We observe enhanced microparticle deposition from tropical volcanic eruptions Particle distributions from tropical eruptions are finer than background dust Ice core particle size data provide a new way to characterize unknown eruptions ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883455338&doi=10.1002%2fgrl.50822&partnerID=40&md5=32b53c451715f9ea9cec48fdf2cf2112
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5881
Appears in Collections: 气候减缓与适应
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作者单位: School of Earth and Climate Sciences, Climate Change Institute, University of Maine, 5790 BGSC, Orono, ME 04469, United States
Recommended Citation:
Koffman B.G.,Kreutz K.J.,Kurbatov A.V.,et al. Impact of known local and tropical volcanic eruptions of the past millennium on the WAIS Divide microparticle record[J]. Geophysical Research Letters,2013-01-01,40(17).