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THE INFLUENCE OF CHANGING CLIMATE AND GEOCRYOLOGICAL CONDITIONS ON THE REGIME OF REGIONAL DISCHARGE AND ICING IN THE UPPER PART OF LENA RIVER’S BASIN

https://doi.org/10.24057/2071-9388-2012-5-1-41-51

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Abstract

Using the balance method authors showed for the case of 1990 that the reaction of the river discharge on the climate change is different in the regions with continuous and sporadic permafrost extent. In mountain with continuous permafrost extent the climate warming has no strong influence on the river discharge but affects on the ice-mounds’ volume. In case of sporadic permafrost extent the decreasing of permafrost area to 30% leads to decreasing of snow-melting overflow up to 38%. Also the period of the flood became longer because the underground storage increasing that takes away the precipitation, snow-melting and condensation water from surface discharge.

About the Authors

Dmitry Sergeev

Russian Federation
Permafrost Laboratory, Institute of Environmental Geoscience, Russian Academy of Sciences


Nikolai Romanovskiy

Russian Federation
Geocryology Department, Faculty of Geology, Moscow State University


Gennadiy Tipenko

Russian Federation
Geocryology Laboratory, Institute of Environmental Geoscience, Russian Academy of Sciences


Sergey Buldovich

Russian Federation
Geocryology Department, Faculty of Geology, Moscow State University


Anatoly Gavrilov

Russian Federation
Laboratory of the Geological Environment, Faculty of Geology, Moscow State University


Kenji Yoshikawa

United States
Water Resource Center, University of Alaska Fairbanks, USA


Vladimir Romanovsky

United States
Geophysical Institute, University of Alaska Fairbanks; PO Box 750109, Fairbanks, AK 99775, USA


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For citation:


Sergeev D., Romanovskiy N., Tipenko G., Buldovich S., Gavrilov A., Yoshikawa K., Romanovsky V. THE INFLUENCE OF CHANGING CLIMATE AND GEOCRYOLOGICAL CONDITIONS ON THE REGIME OF REGIONAL DISCHARGE AND ICING IN THE UPPER PART OF LENA RIVER’S BASIN. GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY. 2012;5(1):41-51. https://doi.org/10.24057/2071-9388-2012-5-1-41-51

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