3:45 PM - 4:00 PM
*Carlos Andres Asuncion Alas1,2, Osmany Rene Aparicio2, Kazuya Ishitsuka3, Atsushi Okamoto1, Noriyoshi Tsuchiya1,4 (1.Graduate School of Environmental Studies, Tohoku University, Sendai, Miyagi 980-0845, Japan, 2.LaGeo S.A. de C.V., Santa Tecla, La Libertad, El Salvador, 3.Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8540, Japan, 4.Natural Institute of technology, Hachinohe College, Hachinohe, Aomori 039-1192, Japan)