Varlamov S

Stepan Varlamov, Ph.D.

Acting Head
Laboratory of Permafrost Geothermics

ORCID: 0000-0003-2021-9686
Web of Science ResearcherID: V-9370-2018
Scopus ID: 22958732100

Tel.: 7-4112-390832


  • M.S. (Geography), Voronezh State University, 1980
  • Ph.D. (Geography), Permafrost institute, 1999. Dissertation: Ground Temperature Regime in Permafrost Landscapes of Central Yakutia

Research Interests

  • permafrost thermal regime
  • spatial and temporal variations
  • anthropogenic effects
  • linear infrastructure in cold regions

Current and Recent Projects

  • Principal Investigator, SB RAS Basic Research Project IX.135.2.1, 2017-2020: Subsurface Temperature Field and Permafrost Transformation in Northern Asia and Central Asian Mountains – Block 3. Thermal Response of Upper Permafrost to Climate Change and Human Impacts. Modeling and Prediction
  • Co-Investigator, RFBR Project 18-41-140008\18, 2018-2020: Developing a Numerical Modelling Procedure for Adverse Permafrost Processes Caused by Climate Change and Anthropogenic Effects (Project Director: Petr Permyakov, Larionov Institute of Physical and-Technical Problems of the North, Yakutsk)
  • Participant, Contract Project, Larionov Institute of Physical and-Technical Problems of the North, Yakutsk, 2018-2020: Investigation of Permafrost Changes and Assessment of Related Hazards on Linear Infrastructure in the Power of Siberia Pipeline Corridor in a Changing Climate (Principal Investigator: Vera Samsonova)
  • Collaborator, Russian Foundation for Basic Research (RFBR Grant No. 18-55-53041) – National Natural Science Foundation of China (NSFC), 2018-2019: A Comparative Study of the Influence of Convection Flows of Water and Air on State of Permafrost in the Aldan-Stanovoy Upland and the Tibetan Plateau (Project Co-Directors: M.N. Zhelezniak, Melnikov Permafrost Institute, Yakutsk, and Zhi Wen, State Key Laboratory of Frozen Soil Engineering, Lanzhou)
  • Co-Investigator, Contract Project, Giprosvyaz PAO, Sakhatelecom (Yakutsk), 2018: Guidelines for Selecting Burial Depth of Fiber Optic Cables with Permissible Crush (0.4 kN/cm2 to 7 kN/cm2) and Tensile (7 kN/cm2 to 40 kN/cm2) Loads in the Active Layer of Permafrost in Amga, Mege-Khangalas, Ust-Aldan, Khangalas, Churapcha, Tatta and Olekminsk Districts, Sakha (Yakutia)
  • Participant, SECOND YAKUTIA EXPEDITION Project (MPI), 2017: Comprehensive Investigation and Mapping of the State of Permafrost in Yakutia for Elaborating Scientific Guidelines and Technologies for Socio-Economic Development
  • Co-Investigator, Contract with the Municipality of Yakutsk, 2016: Assessment of the Current Permafrost and Groundwater Conditions in Yakutsk

Field Work

  • 2005-present – thermal monitoring of the railroad – environment system in ice-rich permafrost terrain, Central Yakutia
  • 2018-2019 – permafrost and terrain investigations along the Power of Siberia Pipeline corridor
  • 1987-present – permafrost and terrain investigations along the northern portion of the Tommot-Nizhnyi Bestyakh railroad, Central Yakutia
  • 1995-present – ground temperature monitoring at Chabyda and Tuymaada sites, Central Yakutia
  • 2002 – permafrost and terrain investigations along the Talakan-Vitim oil pipeline route
  • 2000 – permafrost and terrain investigations along the Ulak-Elga railroad route, southern Yakutia (Field Team Leader)
  • 1991 – permafrost and terrain investigations in the Kolyma River valley for the Srednekanskaya hydropower project (Field Team Leader)
  • 1989-1990 – permafrost and terrain investigations in the Amguema River valley, Chukchi Peninsula (Field Team Leader)
  • 1982-1983 – year-round heat balance observations at Chabyda site, Central Yakutia
  • 1981 – seasonal heat balance observations on slopes, Kular, subarctic Yakutia

Teaching Activities

Field practice guidance, and term paper and graduate thesis supervision of North-Eastern Federal University students

Selected Publications

  • Varlamov S. P., Skachkov Y. B., Skryabin P. N. (2019). Evolution of the thermal state of permafrost under climate warming in Central Yakutia. Holocene 29(9): 1401-1410.
  • Fedorov A.N., Vasilyev N.F., Torgovkin Y.I., Shestakova A.A., Varlamov S.P., Zheleznyak M.N., Shepelev V.V., Konstantinov P.Y., Kalinicheva S.S., Basharin N.I., Makarov V.S., Ugarov I.S., Efremov P.V., Argunov R.N., Egorova L.S., Samsonova V.V., Shepelev A.G., Vasiliev A.I., Ivanova R.N., Galanin A.A., Lytkin V.M., Kuzmin G.P. and Kunitsky V.V. (2018). Permafrost-Landscape Map of the Republic of Sakha (Yakutia) on a Scale 1:1,500,000. Geosciences 8(12), 465;
  • Varlamov, S. P. (2018). Thermal monitoring of railway subgrade in a region of ice-rich permafrost, Yakutia, Russia. Cold Regions Science and Technology, 155, pp. 184-192. doi: 10.1016/j.coldregions.2018.06.016.
  • Permyakov P., Afanasyeva T., Varlamov S., Skryabin P. (2017). Recovery of boundary conditions for modeling the thermal regime of frozen soils. Book of Abstracts, XI International Symposium on Permafrost Engineering. Magadan, Russia, 5-8 September 2017 (ed. R.V. Zhang). Yakutsk: Melnikov Permafrost Institute SB RAS Press, p. 108.
  • Permyakov P., Popov G., Zhirkov A., Varlamov S. (2017). Numerical simulation of the processes of heat, salt and moisture transfer in frozen soils under conditions of a changing climate. Cryosols in Perspective: A View from the Permafrost Heartland. Proceedings of the VII International Conference on Cryopedology (August 21-28, Yakutsk, Sakha (Yakutia) Republic, Russia). Yakutsk-Moscow, pp. 112-113.
  • Permyakov P.P., Varlamov S.P., Zhelezniak M.N. 2017. Influence of vertical seasonal cooling devices on soil heat and moisture transfer. Earth's Cryosphere XXI(1): 60–66. doi: 10.21782/EC2541-9994-2017-1(60-66)
  • Vabishchevich P.N., Varlamov S.P., Vasiliev V.I., Vasilieva M.V., Stepanov S.P. (2017). Numerical simulation of the temperature dynamics of railway foundation material in permafrost. Mathematical Models and Computer Simulations, 9(3): 292-304.
  • Skryabin P.N., Varlamov S.P., Fedorov A.N. (2016). Evaluation of anthropogenic impacts on the thermal state of landscapes in Central Yakutia. In: Günther, F. and Morgenstern, A. (Eds.). XI. International Conference on Permafrost – Book of Abstracts, 20 – 24 June 2016, Potsdam, Germany. Bibliothek Wissenschaftspark Albert Einstein, doi:10.2312/GFZ.LIS.2016.001, p. 1216.
  • Varlamov S.P., Skachkov Yu.B., Sktyabin P.N. (2016). Thermal monitoring of permafrost in the Tuymaada valley. In: Climate and Permafrost Ecosystems. Proceedings of IXth International Symposium "C/H2O/Energy Balance and Climate over the Boreal and Arctic Regions with Special Emphasis on Eastern Eurasia", Yakutsk, Russia, 1-4 November 2016. Nagoya University, p. 97.
  • Permyakov P., Popov G., Varlamov S. (2014). Seasonal dynamics of the soil surface with thaw and freeze in permafrost. Journal of Engineering of Heilongjiang University, 5(3):202-205.
  • Permyakov P., Varlamov S., Skryabin P., Ckachkov Y. (2014). Prediction of soil temperature regime in the present climate change of Central Yakutya. Journal of Engineering of Heilongjiang University, 5(3): 8-12.
  • Varlamov S. (2014). Temperature study of railway embankments on ice-rich permafrost in Yakutia. Journal of Engineering of Heilongjiang University, 5(3): 90-99.
  • Varlamov S., Skachkov Y., Skryabin P. (2014). Current climate change effects on the ground thermal regime in Central Yakutia. Sciences in Cold and Arid Regions, 6(4): 0282-0292.
  • Skryabin P.N., Varlamov S.P. (2012). The impact of development and fire on the thermal state of permafrost, Central Yakutia. In: Proceedings of the Tenth International Conference on Permafrost, Salekhard, Yamal-Nenets Autonomous District, Russia, June 25–29, 2012. Vol. 2 (Ed. V.P. Melnikov, D.D. Drozdov, V.E. Romanovsky). Salekhard: The Northern Publisher, pp. 411-414.
  • Varlamov S.P., Skachkov Yu.B., Skryabin P.N., Shender N.I. (2012). Thermal state of the upper horizons of the permafrost in Central Yakutia. In: Proceedings of the Tenth International Conference on Permafrost, Salekhard, Yamal-Nenets Autonomous District, Russia, June 25–29, 2012. Vol. 2 (Ed. V.P. Melnikov, D.D. Drozdov, V.E. Romanovsky). Salekhard: The Northern Publisher, pp. 481-486.
  • Fortier R., Arenson L.U., Fujun N., Dore G., Varlamov S.P., Zabolotnik S., Ingeman-Nielsen T. & St-Laurent J.-F. (2012). Engineering test sections in permafrost environment: performance of permafrost protection measures and mitigation techniques to permafrost degradation. In: Proceedings of the Tenth International Conference on Permafrost, Salekhard, Yamal-Nenets Autonomous District, Russia June 25–29, 2012. Vol. 4, Extended Abstracts. Tyumen, Ekaterinburg: The Fort Dialog-Iset Publisher, pp. 153-154.
  • Stepan Varlamov, Nikolai Shender, Pavel Skryabin, Yuri Skachkov (2011). Permafrost investigations along the northern section of the Tommot-Yakutsk Railway. In: The Application of Technologies for the Conservation of Nature in Cold Regions: Materials of the IX International Symposium on Cold Regions Development, June 1-5, 2010, Yakutsk, Russia. P. 131.

Books and Maps

  • Варламов С.П., Скрябин П.Н. Антропогенные воздействия на тепловой режим грунтов Центральной Якутии (ISBN 978-3-659-36489-1). – Германия: Изд-во “LAP LAMBERT Academic Publishing”, 2013, 88 с.
  • Мерзлотные ландшафты Якутии. Пояснительная записка к «Мерзлотно-ландшафтной карте Якутской АССР» м-ба 1:2 500 000 / А.Н.Федоров, Т.А.Ботулу, С.П.Варламов и др. – Якутск: ИМЗ СО АН СССР, 1989. – 169 с.
  • Мерзлотно-ландшафтная карта Якутской АССР. М-б 1:2 500 000 / Составители: А.Н.Федоров, Т.А.Ботулу, И.С.Васильев, С.П.Варламов, С.П.Грибанова, И.В.Дорофеев. – М.: Госгеодезия, 1991.
  • Влияние климата на развитие мерзлотных ландшафтов Центральной Якутии / М.К.Гаврилова, А.Н.Федоров, С.П.Варламов, Ю.Б.Скачков и др. – Якутск: ИМЗ СО РАН, 1996. – 152 с.
  • Скрябин П.Н., Варламов С.П., Скачков Ю.Б. Межгодовая изменчивость теплового режима грунтов района Якутска. Новосибирск: Изд-во СО РАН, 1998. – с. - 144.
  • Варламов С.П., Скачков Ю.Б., Скрябин П.Н. Температурный режим грунтов мерзлотных ландшафтов Центральной Якутии. – Якутск: Изд-во Института мерзлотоведения СО РАН, 2002. – 218 с.