1. Department of Geology, Niigata University, 8050, Ikarashi 2-no-cho, Nishi-ku, Niigata 950-2181, Japan (e-mail: y-shiino@geo.sc.niigata-u.ac.jp)
2. Graduate School of Science and Technology, Niigata University, 8050, Ikarashi 2-no-cho, Nishi-ku, Niigata 950-2181, Japan
3. Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8564, Japan
4. Department of Mechanical Engineering, Setsunan University, 17-8, Ikeda-Nakamachi, Neyagawa, Osaka 572-8508, Japan
5. Department of Mechanical Engineering, Toyo University, Kujirai 2100, Kawagoe, Saitama 350-8585, Japan
6. Department of Geology, Niigata University, 8050, Ikarashi 2-no-cho, Nishi-ku, Niigata 950-2181, Japan