METEOROLOGICAL CONDITIONS WHEN CONCENTRATION OF SO<sub>2</sub> ERUPTED FROM MT. ASO IS HIGH IN SURROUNDING AREAS

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  • 阿蘇山起源のSO<sub>2</sub>の高濃度時の気象状況
  • 阿蘇山起源のSO₂の高濃度時の気象状況
  • アソサン キゲン ノ SO ₂ ノ コウノウドジ ノ キショウ ジョウキョウ

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Abstract

 In order to develop a simple risk evaluation method for SO2 erupted from Mt. Aso in Kyushu district, west Japan, relationships between SO2 concentration variations observed at a point 20km east from the crater of the mount and some meteorological observation data were examined. By using cluster analysis, days when observed SO2 concentration were relatively high, were selected from the target period and the meteorological data of the days were analyzed. Some typical meteorological patterns which can cause high SO2 concentrations were clarified.

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