Abstract
Study area in continuous permafrost zone, characterized by tabular ground ice distribution, is known for active slope processes. In 90-s main attention was paid to translational landslides (active layer detachments). Due to climate trends summer temperature became warmer, active layer depth increased. As a result, active-layer base ice thawed and stopped development of translational landslides. At the same time, tabular ground ice table got involved into seasonal thaw and triggered earth flows at the lake shores, the second known type of cryogenic landslides found previously mainly at the sea coasts. Earth flows are the main process in thermal denudation: a complex of processes responsible for formation of thermocirques. Thermocirques are semi-circle shaped depressions resulting from massive ground ice thaw and removal of detached material downslope. Monitoring of thermocirque activation and development allows analyzing climatic controls of thermal denudation, and rates of thermocirque enlargement. At present in the Yamal Peninsula tundra predominance of processes associated with tabular ground ice thaw (cryogenic earth flows) over the processes associated with the ice formation at the bottom of the active layer (cryogenic translational landslides) is observed. This is caused by deepening of the active layer and exposure of the massive ground ice (tabular ground ice or ice-wedges) within permafrost to first seasonal and then perennial thaw. Activation of thermal denudation which started on Yamal Peninsula in summer 2012, is associated with extremely warm spring and summer of this year, and the warmest July of 2013. By the end of the warm season thawing of the top of icy permafrost and tabular ground ice on some slopes resulted in cryogenic landsliding in the form of earth flows and further thermocirque development. Thermocirques may form on slopes of various aspects but develop faster on south-facing slopes.
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References
Khomutov A, Leibman M (2014) Landslides in cold regions in the context of climate change, envi-ronmental science and engineering. In: Shan W, Guo Y, Wang F, Marui H, Strom A (eds). Springer International Publishing, Switzerland. (ISBN 978-3-319-00866-0), pp 271−290
Kokelj SV, Lewkowicz AG (1998) Long-term influence of active-layer detachment sliding on permafrost slope hydrology. Hot Weather Creek, Ellesmere Island, Canada, pp 583–589
Leibman MO (1998) Active layer depth measurements in marine saline clayey deposits of Yamal Peninsula, Russia: procedure and interpretation of results. Proceedings of seventh international conference on Permafrost, 23–27 June 1998, Yellowknife, Canada. pp 635–639
Leibman MO, Egorov IP (1996) Climatic and environmental controls of cryogenic landslides, Yamal, Russia. Landslides. Balkema Publishers, Rotterdam, pp 1941–1946
Leibman MO, Kizyakov AI, Sulerzhitsky LD, Zaretskaya NE (2003) Dynamics of the landslide slopes and mechanism of their development on Yamal peninsula, Russia. Proceedings of the 8th international conference on Permafrost, 21–25 July 2003, Zurich, pp 651–656
Leibman M, Khomutov A, Kizyakov A (2014) Landslides in cold regions in the context of climate change, envi-ronmental science and engineering. In: Shan W, Guo Y, Wang F, Marui H, Strom A (eds). Springer International Publishing, Switzerland. (ISBN 978-3-319-00866-0), pp 143−162
Leibman MO, Khomutov AV, Gubarkov AA, Mullanurov DR, Dvornikov YuA (2015) The research station “Vaskiny Dachi”, Central Yamal, West Siberia, Russia—a review of 25 years of permafrost studies. Fennia 193(1):3–30
Lewkowicz AG, (1990) Morphology, frequency and magnitude of active-layer detachment slides, Fosheim Peninsula, Ellesmere Island, N.W.T. Proceedings of the 5th Canadian Permafrost Conference, June 1990. Quebec, Canada. pp 111–118
Acknowledgements
The study is partially supported by RFBR, research project No. 13-05-91001-AHФ_a; ASF No I 1401-N29; and The Presidential Council for grants, Science School Grant No. 9880.2016.5; Russian Science Foundation Grant 16-17-10203; International projects CALM and TSP.
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Khomutov, A., Leibman, M., Dvornikov, Y., Gubarkov, A., Mullanurov, D., Khairullin, R. (2017). Activation of Cryogenic Earth Flows and Formation of Thermocirques on Central Yamal as a Result of Climate Fluctuations . In: Mikoš, M., Vilímek, V., Yin, Y., Sassa, K. (eds) Advancing Culture of Living with Landslides. WLF 2017. Springer, Cham. https://doi.org/10.1007/978-3-319-53483-1_24
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DOI: https://doi.org/10.1007/978-3-319-53483-1_24
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