*Fukamachi Yasushi¹、Simizu Daisuke²、Ohshima Kay¹、Eicken Hajo³、Mahoney Andrew³、Iwamoto Katsushi⁴、Moriya Erika⁵、Nihashi Sohey⁶ (1.Hokkaido University、2.National Institute of Polar Research、3.University of Alaska Fairbanks、4.City of Mombetsu、5.Hydro Systems Development, Inc.、6.National Institute of Technology, Tomakomai College)