12:24 PM - 12:39 PM
*Taro KOMAGOE1, Tsuyoshi WATANABE1, Tsuzumi MIYAJI2, Kotaro SHIRAI3, Atsuko YAMAZAKI3 (1.Department of Natural History, Graduate School of Science, Hokkaido Univ., Sapporo, Japan, 2.Tomakomai City Museum, Tomakomai, Japan, 3.Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan)