Authors: Maria Ananicheva*, Institute if Geography, RAS, Egor V Belozerov, Lomonosov State Univercity, Goographical faculty
Topics: Mountain Environments, Russia, Polar Regions
Keywords: Glacier, area, volume, Chukotka Kolyma, Far East of Russia, satellite image, field study
Session Type: Guided Poster
Start / End Time: 4:30 PM / 6:10 PM
Room: Roosevelt 3.5, Marriott, Exhibition Level
Presentation File: Download
This paper includes the results of field studies in the Chukchi Highlands, satellite images deciphering for different time periods, and the involving digital elevation models. The aim of the work is to assess the main parameters of the Chukotka and Kolyma glaciers: size and volumes, and their change over time, as well as discussing the state of small forms of glaciation in these regions. Climate trends within the study area do not contribute to the development of glaciation: temperature trends are positive, and precipitation of a cold period. The areas of glaciers are determined for periods from the beginning of the 1980s to 2005 and up to 2017 retrieving from various satellite images and from the catalog of these glaciers investigator, R.V. Sedov. The maximum reduction is characteristic for glacial objects of the basins of the left bank of the Amguema River, Cross Gulf and Lawrence Bay. Glacier volumes are determined by the formula of S.А. Nikitin for corrie glaciers (he obtained them by measuring glaciers of Altai), and by our own method: the average thickness of the glaciers is calculated from the field of iso-gypsum patterns, constructed using the DEM of individual glaciers made by drone during field work, and ArcticDEM. Basing on these studies the formulas have been obtained to calculate the volumes of the small glacier forms of Chukotka and Kolyma.