M. A. Sivtsev
Melnikov Permafrost Institute, Siberian Branch of the Russian Academy of Sciences
Russian Federation

Maxim A. Sivtsev - Junior Researcher, Laboratory of Permafrost Geothermics, Melnikov Permafrost Institute, Siberian Branch of the Russian Academy of Sciences.

36, Merzlotnaya St., Yakutsk, 677010

A. F. Zhirkov
Melnikov Permafrost Institute, Siberian Branch of the Russian Academy of Sciences
Russian Federation

Alexander F. Zhirkov - Cand. Sci. (Eng.), Leading Researcher, Laboratory of Permafrost Geothermics, Melnikov Permafrost Institute, Siberian Branch of the Russian Academy of Sciences.

36, Merzlotnaya St., Yakutsk, 677010

V. P. Osipov
Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences
Russian Federation

Vladimir P. Osipov - Cand. Sci. (Eng.), Leading Researcher, Department No. 16, Sector No. 3, Keldysh Institute of Applied Mathematics of Russian Academy of Sciences.

4, Miusskaya Sq., Moscow, 125047