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*Wataru Miyazaki
Environmental System Engineering, Nagaoka University of Technology
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Toshiro Kumakura
The Dept. of Civil and Environmental Engineering , Nagaoka University of Technology
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Satoru Yamaguchi
Snow and Ice Research Center, NIED
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Hiroki Motoyoshi
Snow and Ice Research Center, NIED
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Sento Nakai
Snow and Ice Research Center, NIED
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Yukari Takeuchi
Tohkamachi Experimental Station, Forestry and Forest Products Research Institute