L. A. Petrov
Lomonosov Moscow State University
Russian Federation

Leonid A. Petrov – Postgraduate Student, Department of  World Physical Geography and Geoecology, Faculty of  Geography

Leninskie Gory 1, Moscow 119991

Yu. E. Ermakova
Institute of Geography RAS
Russian Federation

Yulia I. Ermakova – engineer, Department of Physical Geography and Environmental Management Problems

per. Staromonetny 29-4, Moscow 119017

E. G. Nagornaya
National Research University «Higher School of Economics»
Russian Federation

Elena G. Nagornaya – Senior Lecturer, Faculty of Geography and Geoinformation Technologies

ul. Myasnitskaya 20, Moscow 101000