11:30 AM - 11:45 AM
*Gabriela Nogo Retnaningtyas Bunga Naen1, Atsushi Toramaru1, Saefudin Juhri2, Kotaro Yonezu2, Haryo Edi Wibowo3 (1.Department of Earth and Planetary Science, Kyushu University, Fukuoka 819-0395, Japan, 2.Department of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, Japan, 3.Department of Geological Engineering, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia)