5:15 PM - 6:30 PM
*Yurie SAWAHATA1, Makoto Okada2, Jun Hosoi3, Kazuo Amano4 (1.Graduate School of Sci. and Eng., Ibaraki Univ., 2.College of Sci., Ibaraki Univ., 3.Geological Survey of Japan, AIST, 4.The Institute of Natural Sciences, College of Humanities and Sciences, Nihon Univ.)