*Hiroshi Ota¹, Hideki Daiku², Hitoshi Iwabuchi², Daisuke Nagamoto³ (1. Civil Engineering Research Institute for Cold Region, 2. Ministry of Land, Infrastructure, Transport and Tourism, 3. Civil Engineering & Eco-Technology Consultants)

*hideki yoshida¹ (1. Yachiyo Engineering)

*Atsushi Uechi¹, Daisuke Kamiya², Ryo Yamanaka¹, Daisuke Fukuda³, Yoshiki Suga⁴ (1. University of the Ryukyus, 2. University of the Ryukyus, 3. The University of Tokyo, 4. Regional Futures Research Center)

*Toshiaki Machida¹, Daisuke Kamiya² (1. University of the Ryukyus Graduate School, 2. University of the Ryukyus)

*Ryohei Ogino¹, Naoyuki Tomari² (1. Tohoku Institute of Technology, 2. Tohoku Institute of Technology)

*Kana Masuhashi¹, Eiji Hato¹ (1. The University of Tokyo)