Yuichiro Ota¹, *Katsumi Hattori^2,3,4, Kenshin Miura⁵, Chie Yoshino², Noriyuki Imazumi⁶ (1.Graduate School of Science and Engineering, 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.Faculty of Science, Chiba University, 6.The Institution of Professional Engineers, Chiba Branch, Japan)