*Dashan T. Udagedara¹, Chiaki T. OGUCHI², Jagath K. GUNATILAKE³ (1.Uva Welassa University, Saitama University, 2.Saitama University, 3.University of Peradeniya)

*Yasuto HIRATA¹, Masahiro CHIGIRA², Youqing CHEN³ (1.Graduate School of Science, Kyoto University, 2.Disaster Prevention Research Institute, Kyoto University, 3.Graduate School of Energy Science, Kyoto University)

*Wonsuh SONG¹, Tetsuya WARAGAI², Chiaki OGUCHI¹ (1.Graduate School of Science and Engineering, Saitama University, 2.Depart of Geography, College of Humanities and Sciences, Nihon University)

*Mohammad RAJIB¹, Shogo KODAMA¹, Wonsuh SONG², Chiaki T. OGUCHI² (1.Graduate School of Science and Engineering, Saitama University, 2.Department of Civil and Environmental Engineering, Saitama University)

*Yuichi S. HAYAKAWA¹, Chiaki T. OGUCHI², Natsuki ARIGA³, Hisashi AOKI³ (1.Univ. Tokyo, 2.Saitama Univ., 3.Tokyo Gakugei Univ.)

*Shoichi HACHINOHE¹, SUSHMITA HOSSAIN², Takashi ISHIYAMA¹, Hideki HAMAMOTO¹, Chiaki T. OGUCHI³ (1.Center for Environmental Science in Saitama, 2.Bangladesh Atomic Energy Commission, 3.Graduate School of Science and Engineering, Saitama University)

*Reiko GENNO¹, Noritaka ENDO¹ (1.Department of Natural Science and Technology, Kanazawa University)