Geomorphological processes and landforms of glacier forelands in the upper Aktru River basin (Gornyi Altai), Russia : evidence for rapid recent retreat and paraglacial adjustment

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dc.contributor.author Hedding, David W.
dc.contributor.author Erofeev, Aleksander A.
dc.contributor.author Hansen, Christel
dc.contributor.author Khon, Alexey, V.
dc.contributor.author Abbasov, Zamir R.
dc.date.accessioned 2021-01-07T05:15:04Z
dc.date.issued 2020-04
dc.description.abstract The glaciers in the Aktru River basin of Gornyi Altai, Russia currently represent some of the fastest receding glaciers in the world. Formation of the morainic complexes closest to the contemporary glaciers in the Aktru River basin took place during the 17th - 18th centuries with recession commencing at the end of the 18th century. Coupled with this glacial retreat, earth surface processes and vegetation succession are responding to shape the glacier forelands. This article presents the first geomorphological maps for the upper reaches of the Aktru River basin and focuses on the geomorphological landforms that occur in the rapidly changing glacier forelands. Geomorphological mapping is difficult in steep mountainous regions and, thus, mapping was completed using satellite imagery, field mapping and observations coupled with highresolution aerial photography obtained from Unmanned Aerial Vehicles (UAVs). Critical steps of the procedure used to process UAV imagery and difficulties encountered in this mountainous terrain are noted. The acquired spatial data enable the mapping and classification of small-scale transient geomorphological features such as talus, glacial and glaciofluvial landforms. Their dynamics provide insights into supraglacial and subglacial processes of the glaciers of the Aktru River basin and subsequent paraglacial adjustment. The presented highresolution spatial data, which can also be obtained at high temporal resolutions in the future, can act as a reference frame for geomorphologists and ecologists studying the temporal evolution of glacier forelands of the Aktru River basin during paraglacial adjustment and subsequent colonisation and stabilisation by biota. en_ZA
dc.description.department Geography, Geoinformatics and Meteorology en_ZA
dc.description.embargo 2021-04-11
dc.description.librarian hj2020 en_ZA
dc.description.sponsorship Incentive Funding for Rated Researchers Programme from the National Research Foundation South Africa, the BRICS Network University International Thematic Groups Seed-Funding and the Tomsk State University Competitive Improvement Programme. en_ZA
dc.description.uri https://www.springer.com/journal/11629 en_ZA
dc.identifier.citation Hedding, D.W., Erofeev, A.A., Hansen, C.D. et al. Geomorphological processes and landforms of glacier forelands in the upper Aktru River basin (Gornyi Altai), Russia: evidence for rapid recent retreat and paraglacial adjustment. Journal of Mountain Science 17, 824–837 (2020). https://doi.org/10.1007/s11629-019-5845-5. en_ZA
dc.identifier.issn 1672-6316 (print)
dc.identifier.issn 1993-0321 (online)
dc.identifier.other 10.1007/s11629-019-5845-5
dc.identifier.uri http://hdl.handle.net/2263/77952
dc.language.iso en en_ZA
dc.publisher Springer en_ZA
dc.rights © Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2020. The original publication is available at : https://www.springer.com/journal/11629. en_ZA
dc.subject Geomorphology en_ZA
dc.subject Glacier Forelands en_ZA
dc.subject Unmanned aerial vehicle (UAV) en_ZA
dc.subject Aktru en_ZA
dc.subject Altai en_ZA
dc.subject Russia en_ZA
dc.title Geomorphological processes and landforms of glacier forelands in the upper Aktru River basin (Gornyi Altai), Russia : evidence for rapid recent retreat and paraglacial adjustment en_ZA
dc.type Postprint Article en_ZA


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