10:45 AM - 12:15 PM
*Rumiko Kajihara1, Sawako Shirai1, Masanori Nunokawa1, Kenji Mori1, Masami Ohashi2, Kazushi Miyashita3, Shigeru Montani3 (1.Public Works Research Institute, Civil Engineering Research Institute for Cold Region, 2.Tokai University, 3.Hokkaido University)