Journal of Korean Society for Atmospheric Environment

한국대기환경학회 (Korean Society for Atmospheric Environment)
권호 표지

High Atmospheric Loading for $SO_2$ and Sulfate Observed in the Kanto Area, Japan During the Miyakejima Volcanic Eruption

  • Ma, Chang-Jin (Department of Environmental Science, Fukuoka Women's University) ;
  • Cao, Renqiu (Graduate School of Energy Science, Kyoto University) ;
  • Tohno, Susumu (Graduate School of Energy Science, Kyoto University) ;
  • Kasahara, Mikio (Institute of Science and Technology Research, Chubu University)
  • 발행 : 2006.12.31
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초록

Combined gas and aerosol measurements at a downwind area of the volcanic plume would be essential for helping to access the impact of the volcanic eruption on the local ecosystem and residents. An intensive and the fine time resolution measurement of $SO_2$, sulfate and PM2.5 was made to estimate their distribution in the Kanto area of Japan during the Miyakejima volcanic eruption period. In Tokyo, the 1 hr average $SO_2$ concentration observed before the eruption was 23.9 ppbv, while that of after eruption was 140.4 ppbv. In the Saitama Prefecture, the average concentration of $SO_2$ marked in the present study was two times higher than the average before the volcanic eruption. The PM2.5 mass concentrations in Sitama ranged from 3.8 to $136{\mu}g\;m^{-3}$. Sulfate accounts for $4.4{\sim}39.6%$ of PM2.5 in Sitama. The good correlationship between the concentrations of $SO_2$ and sulfate was obtained. The results of the VAFTAD and HYSPLIT models indicate that $SO_2$, sulfate, and PM2.5 measured in the present study would be expected to be significantly affected by the Miyakejima volcanic plume.

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참고문헌

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