*Hsinyi WEN¹, Yuji SANO², Naoto TAKAHATA², Akizumi ISHIDA², Kentaro TANAKA², Yama TOMONAGA², Takanori KAGOSHIMA², Kotaro SHIRAI², Jun-ichiro ISHIBASHI³, Hisayoshi YOKOSE⁴, Urumu TSUNOGAI⁵, Tsanyao F. YANG¹ (1.Department of Geosciences, National Taiwan University, Taiwan, 2.Atmosphere and Ocean Research Institute, The University of Tokyo, Japan, 3.Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, Japan, 4.Graduate School of Science and Technology, Kumamoto University, Japan, 5.Graduate School of Environmental Studies, Nagoya University, Japan)

*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)