Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111149
Title: Specific Effects of the 1988 Earthquake on Topography and Glaciation of the Tsambagarav Ridge (Mongolian Altai) Based on Remote Sensing and Field Data
Authors: Agatova, A.
Nepop, R.
Ganyushkin, D.
Otgonbayar, D.
Griga, S.
Ovchinnikov, I.
Issue Date: 2022
Publisher: MDPI
MDPI AG
Citation: Specific Effects of the 1988 Earthquake on Topography and Glaciation of the Tsambagarav Ridge (Mongolian Altai) Based on Remote Sensing and Field Data / A. Agatova, R. Nepop, D. Ganyushkin et al. // Remote Sensing. — 2022. — Vol. 14. — Iss. 4. — 917.
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 km2 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. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords: 1988 TSAMBAGARAV EARTHQUAKE
FIELD RESEARCH
GLACIATION
ICE–ROCK AVALANCHE
MONGOLIAN ALTAI
REMOTE SENSING
SEISMICITY
TSAMBAGARAV RIDGE
DEBRIS
EARTHQUAKES
GLACIAL GEOLOGY
GLOBAL WARMING
ICE
LANDSLIDES
ROCKS
TOPOGRAPHY
1988 TSAMBAGARAV EARTHQUAKE
FIELD RESEARCH
ICE-ROCK AVALANCHES
MONGOLIAN ALTAI
MONGOLIANS
REMOTE FIELDS
REMOTE SENSING DATA
REMOTE-SENSING
SEISMICITY
TSAMBAGARAV RIDGE
REMOTE SENSING
URI: http://hdl.handle.net/10995/111149
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85124959905
PURE ID: 29638276
ISSN: 2072-4292
metadata.dc.description.sponsorship: Funding: The study was supported by State Assignment of IGM SB RAS and partly funded by Russian Science Foundation (grant 22-27-00447).
RSCF project card: 22-27-00447
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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