*Shin Sugiyama1, Shun Tsutaki2, Daiki Sakakibara3, Evgeny A. Podolskiy3, Masahiro Minowa1, Yoshihiko Ohashi1, Jun Saito1, Takanobu Sawagaki7, Sumito Matoba1, Naoya Kanna3, Hiroyuki Enomoto6, Martin Funk4, Riccardo Genco5, Yvo Weidmann4, Guillaume Jouvet4, Julien Seguinot4
(1.Institute of Low Temperature Science, Hokkaido University, 2.Earth Observation Research Center, Japan Aerospace Exploration Agency, 3.Arctic Environment Research Center, National Institute of Polar Research, 4.Laboratory for Hydraulics, Hydrology and Glaciology, ETH-Zurich, Switzerland, 5.Department of Earth Science, University of Florence, 6.National Institute of Polar Research, 7.Hosei University)