Authors: Maria Ananicheva*, Institute if Geography, RAS, Gleb Yu Pakin, Institute of Geograpy RAS
Topics: Cryosphere, Physical Geography, Polar Regions
Keywords: Russia North, cryosphere, climate change, glaciers
Session Type: Guided Poster
Presentation File: No File Uploaded
The glaciers of the Verkhneangarsky Range were discovered in 2017-18 during field investigation;
Satellite images revealed three glaciers and some other small glacier bodies in the area of the Verkhneangarsky Range that are not mentioned in the USSR Catalogue of glaciers. Previously the Sochava Institute of Geography’s scientists described glacier groups on the Baikal and Barguzin ranges, which, together with Verkhneangarsky Range group are linked to the Baikal basin by climate.
Paper gives the analysis of climate change in the region Trends of mean annual temperature are from 1 to 4оС/50 years, mean summer one is less – from 1 to 3оС /50 years. The other picture is in spatial patterns of precipitation: total precipitation trends decreases towards Baikal Lake, and precipitation of cold period on the contrary increases toward the lake. The latter serves as confirmation of the Baikal basin influence on accumulation on the glaciers. Now Verkhneangarsky Range glaciers are in a mothballed state, under conditions of climate warming they are subject to a slow regression.
The Verkhneangarsky glacial group unites glacial formations of the morphological type - corrie, in size they belong to small forms of glaciation. The ice temperature, which is close to the temperature of the surface layer of frozen ground, explains one of the conditions for the existence of glaciers in the temperate zone. The dynamics of glaciers is shown in comparison of the deciphered images from the Bing service and Sentinel-2, as well as CORONA (1967)