*Yoshiki Sato1, Sumiko KUBO2 (1.Geological Survey of Japan, Advanced Industrial Science and Technology, 2.School of Education, Waseda University)
convener:Hisao Kondo(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Mamoru Koarai(Earth Science course, College of Science, Ibaraki University), Takashi OGAMI(National Institute of Advanced Industrial Science and Technology), Yoshiki Sato(Advanced Industrial Science and Technology, Geological Survey of Japan)