Fluxes,sizes, morphology and compositions of particles in the Mt. Erebus volcanic plume,December 1983 |
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| Authors: | Chuan Raymond L Palais Julie Rose William I Kyle Philip R |
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| Institution: | (1) Defense Division, Brunswick Corporation, 92626 Costa Mesa, CA, U.S.A.;(2) Institute of Polar Studies, Ohio State University, 43210 Columbus, OH, U.S.A.;(3) Present address: Graduate School of Oceanography, University of Rhode Island, 02881 Kingston, RI, U.S.A.;(4) Department of Geology and Geological Engineering, Michigan Technological University, 49931 Houghton, MI, U.S.A.;(5) Geosciences Department, New Mexico Institute of Mining and Technology, 87801 Socorro, NM, U.S.A. |
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| Abstract: | Use of an airborne quartz crystal microbalance cascade impactor instrument together with a correlation spectrometer has allowed the flux of particles and their size distribution to be determined at Mount Erebus. The plume contributes 21±3 metric tomnes/day of aerosol particles to the Antarctic upper troposphere. The aerosol particles consist of larger (5–25  m) particles of elemental sulfur and silica, a middle sized group of iron oxides and smaller particles (less than 1 m) of complex liquids. Unlike many volcanic plumes, the Erebus plume has only a small amount of sulfate particles. The concentrations of particles in the Erebus plumes was 70–370 m/m3. Limited sampling of the Antarctic atmosphere at 8 km altitude but hundreds of km away from Erebus obtained a few large particles of sulfur and silicates, suggesting a similarity with the Erebus plume. The fallout of these particles occurs slowly over a broad area of the Antarctic continent. |
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| Keywords: | Antarctic aerosol size distribution volcanic plume |
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