*Yuichiro Ota¹, Chie Yoshino², Katsumi Hattori^2,3,4, Kenshin Miura¹, Noriyuki Imazumi⁵ (1.Chiba University, 2.Graduate School of Science, Chiba University, 3.Center for Environmental Remote Sensing, Chiba University, 4.Research Institute of Disaster Medicine, Chiba University, 5.The Institution of Professional Engineers, Chiba, Japan)