Earth’s Cryosphere, 2017, Vol. XXI, No. 2, p. 28-37
ТHERMODENUDATION ON YAMAL PENINSULA AS A SOURCE OF THE DISSOLVED ORGANIC MATTER INCREASE IN THAW LAKES
Yu.A. Dvornikov1, M.O. Leibman1,2, B. Heim3, A.V. Khomutov1,2, S. Roessler4, A.A. Gubarkov5
1 Earth Cryosphere Institute, SB RAS, P/O box 1230, Tyumen, 625000, Russia; ydvornikow@gmail.com
2 Tyumen State University, 6, Volodarskogo str., Tyumen, 625003, Russia
3 Alfred Wegener Institute for Polar and Marine Research, 14473, Telegrafenberg A43, Potsdam, Germany
4 FIELAX, 27568, Schleusenstr. 14, Bremerhaven, Germany
5 Tyumen Industrial University, 38, Volodarskogo str., Tyumen, 625000, Russia
This paper is devoted to the study of thermodenudation impact on concentration of dissolved organic matter in lake water. We present results of measured concentration of colored dissolved organic matter in water samples collected from the lakes in Central Yamal. We show the difference of colored dissolved organic matter concentration in lakes with thermo-denudational coasts and in intact lakes. Buried peat layers discovered in thermocirque exposures appeared to have high concentration of dissolved organic carbon. We found average concentration of colored dissolved organic matter 3.5–4.5 times higher in lakes with thermocirques than in intact lakes.
Сolored dissolved organic matter, thermocirques, Yamal lakes