Paper Info
Title
Specific Effects of the 1988 Earthquake on Topography and Glaciation of the Tsambagarav Ridge (Mongolian Altai) Based on Remote Sensing and Field Data
Abstract
Strong earthquakes could serve as a trigger for glacier detachment and associated ice-rock avalanches. The 1988 Tsambagarav earthquake (M = 6.4) initiated collapse of part of the glacier tongue and a further ice-rock avalanche with an abnormal 5 km long path in Zuslan valley, Tsambagarav ridge (Mongolian Altai). Early documentation of surface effects in 1988, remote sensing and field data gathered 16 and 30 years after this event allowed for the assessment of the seismic impact on a reduction of "damaged" glacier under conditions of global warming as well as estimating topography changes in this arid and seismically active area. Because of the earthquake, the glacier immediately lost 10.4 % of its area (0.1 km(2) of tongue surface). Additionally, 56% of its area was lost during 1988-2015, shrinking much faster than neighboring glaciers of similar size and exposition. Collapse of snow-ice cornice in the accumulation zone could play a key role in rapid acceleration of the detached ice block and abnormally long path of the ice-rock avalanche. A large amount of debris material provided more than 16 years of ice melting. Downstream, the valley avalanche debris cover repeats the topography of underlying Pleistocene moraines, which should be considered in regional paleogeographical reconstructions.
Year
DOI
Venue
2022
10.3390/rs14040917
REMOTE SENSING
Keywords
DocType
Volume
Mongolian Altai, Tsambagarav ridge, glaciation, seismicity, 1988 Tsambagarav earthquake, ice-rock avalanche, remote sensing, field research
Journal
14
Issue
Citations 
PageRank 
4
0
0.34
References 
Authors
0
6
Name
Order
Citations
PageRank
Anna Agatova100.34
Roman Nepop200.34
Dmitry Ganyushkin300.68
Demberel Otgonbayar400.34
Semen Griga500.34
Ivan Ovchinnikov600.34