11:00 AM - 1:00 PM
*Rumiko Kajihara1, Masanori Nunokawa1, Hiroyuki Matono1, Masami Ohashi2, Tomohiro Komorita3, Kazushi Miyashita4, Shigeru Montani4 (1.Public Works Research Institute, Civil Engineering Research Institute for Cold Region, 2.Tokai University, 3.Prefectural University of Kumamoto, 4.Hokkaido University)