10:15 AM - 10:30 AM
*Zenshiro SAITO1, Yasuo OGAWA2, Hideaki HASE2, Wataru KANDA2, Yoshimori HONKURA2, Kaori SEKI1, Shin'ya SAKANAKA3, Koichi ASAMORI4 (1.Department of earth and Planetary Sciences, Tokyo Institute of Technology, 2.Volcanic Fluid Research Center, Tokyo Institute of Technology, 3.Akita Universoty, 4.JAEA)