*Yunosuke Hase¹, Akihiro Hachikubo¹, Satoshi Yamashita¹, Hirotoshi Sakagami¹, Masaaki Konishi¹, Hirotsugu Minami¹, Kenji Nishina², Tadashi Misaka³ (1.Kitami Institute of Technology, 2.Geological Survey of Hokkaido, Hokkaido Research Organization, 3.Wakkanai Fisheries Research Institute, Hokkaido Research Organization)

*daisuke yahagi¹, Akihiro Hachikubo¹, Masaaki Konishi¹, Hirotoshi Sakagami¹, Hirotsugu Minami¹, Satoshi Yamashita¹, Kenji Nishina², Yasuhito Uchida², Kenji Sakaguchi³ (1.kitami institute of technology, 2.Geological Survey of Hokkaido, Hokkaido Research Organization, 3.Kushiro Fisheries Research Institute, Hokkaido Research Organization)

*Hiromi Kimura¹, Yunosuke Hase¹, Yuki Ikeura¹, Ryoya Kamata¹, Akihiro Hachikubo¹, Masaaki Konishi¹, Hirotoshi Sakagami¹, Hirotsugu Minami¹, Satoshi Yamashita¹ (1.Kitami Institute of Technology)