*Junko Iwahashi1, Hiroyuki Ohno1, Takayuki Nakano1 (1.GSI of Japan)
convener:Mamoru Koarai(Earth Science course, College of Science, Ibaraki University), Kazunari Tanka(Department of Civil Engineering and Urban Design, Faculty of Engineering, Osaka Institute of Technology), Kazuhiko W. Nakamura(The University of Tokyo)