Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Particle Size Distribution Analysis of Mineral Dust in Polar Snow Using a Coulter Counter

쿨터카운터(Coulter Counter)를 이용한 극지 눈시료 중 광물성 먼지의 입자크기분포 분석

  • 강정호 (한국해양과학기술원 부설 극지연구소) ;
  • 황희진 (한국해양과학기술원 부설 극지연구소) ;
  • 홍상범 (한국해양과학기술원 부설 극지연구소) ;
  • 허순도 (한국해양과학기술원 부설 극지연구소)
  • Received : 2014.09.14
  • Accepted : 2014.11.27
  • Published : 2014.12.30
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Abstract

Mineral dust in the polar snow plays an important role both in the climate system of the Earth and in global biogeochemical cycles. Analysis of the concentration and the particle size distribution of mineral dust has been carried out in the snow from the Antarctic surface snow and the Greenland snowpit. Among the various particle size determination techniques, a Multisizer 3 Coulter Counter in a class 100 clean bench counted all particles between 1.1 and $30.0{\mu}m$ with a $50{\mu}m$ aperture tube. The aperture tube size, the concentration of electrolytes and the accuracy of the particle size distribution were determined in this study. The number concentrations from the Antarctic surface snow were 81,843 particles $mL^{-1}$, but those from the Greenland snowpit were 10,666 particles $mL^{-1}$. In the volume distribution, the distributions of mineral dust in both the Antarctic surface snow and the Greenland snowpit showed lognormal distribution in the size interval 1.1 to $6.0{\mu}m$ with the mode, 3.562 and $3.836{\mu}m$, respectively. The analysis technique using a coulter counter for mineral dust could be used for reconstructing paleoclimates from polar ice cores.

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References

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