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*Masaaki Ishizaka
Snow and Ice Research Center, National Research Institute for Earth Science and Disaster Prevention
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Sento Nakai
Snow and Ice Research Center, National Research Institute for Earth Science and Disaster Prevention
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Toshiro Kumakura
Dept. of Civil and Environmental Engineering, Nagaoka University of Technology
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Toru Shiina
Dept., of Electrical Engineering, Toyama National College of Technology