12:00 PM - 12:15 PM
*Teruki Oikawa1, Keiji Ikeda1, Hiroaki Yanagisawa1, Takanori Ishihara1, Jiro Komori2, Chiyuki Narama3 (1.Volcanology Division, Japan Meteorological Agency, 2.Teikyo Heisei University, 3.Department of Environmental Science, Niigata University)