Sauvik Santra¹, Shubha Verma², Koji Fujita³, Indrajit Chakraborty², Olivier Boucher⁴, Toshihiko Takemura⁵, John F. Burkhart⁶, Felix Matt⁷ and Mukesh Sharma⁸, (1)Indian Institute of Technology Kharagpur, Department of Civil Engineering, Kharagpur, India, (2)Indian Institute of Technology Kharagpur, Kharagpur, India, (3)Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan, (4)LMD, Paris Cedex 05, France, (5)Kyushu University, Fukuoka, Japan, (6)University of Oslo, Department of Geosciences, Oslo, Norway, (7)University of Oslo, Geosciences, Oslo, Norway, (8)Indian Institute of Technology Kanpur, Civil Engineering, Kanpur, India