*Dahedrey Payandi-Rolland^1,2、Liudmila S. Shirokova^2,3、Pascale Bénézeth²、Rinat M. Manasypov⁴、Oleg S. Pokrovsky^2,4 (1.Department of Geography, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan、2.Géosciences Environnement Toulouse, GET – CNRS – CNES – IRD – OMP – Université de Toulouse, France, 14 Avenue Edouard Belin, 31400 Toulouse, France、3.N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch or RAS, Arkhangelsk, Nab Severnoi Dviny 23, Russia、4.BIO-GEO-CLIM Laboratory, Tomsk State University, 35 Lenina Pr., Tomsk, Russia)