Results of monitoring ice collapses using aerospace and ground-based information

Data on ice collapses in the Caucasus and Alps mountains obtained as a result of deciphering multi-time satellite images are presented: ice collapses of hanging glaciers, end parts of glaciers, sections of glaciers on steep steps of the indigenous relief, sections of icefalls. The activity of ice collapses in the summer period was revealed. The range of the release of ice blocks of the Trift glacier in the Swiss Alps in 2017 reached 1050 m. Ice collapses were observed in the areas of icefalls on the Irik, Terskol, and Garabashi glaciers (on the slopes of Elbrus) with a range of up to 330 m. The most active were the ice-stone collapses of hanging glaciers and underlying bedrock in the Kolka glacier cirque in 2002 and 2003 and the ice collapses of the advancing glacier on the Kazbek slope in 2015-2019. Annual ice collapses from the Bezengi wall (Central Caucasus) are noted.