Академическое издательство «Гео»

Rivers, groundwater feeding, dispersed inflow, thermal characteristics, temperature, heat flux



KRIOSFERA ZEMLI, 2007, Vol. XI, № 4, p. 57-64

Investigations of the thermal characteristics of groundwater inflow into mountain rivers of the cryolithozone

V.M. Mikhailov, T.V. Bantsekina, M.V. Ushakov*

North-Eastern Permafrost Research Station, Melnikov Permafrost Institute SB RAS, 685000, Magadan, Gagarina str., 12, Russia, svnims@mail.ru
* RF State Committee for the Hydro-Meteorology and Environment Monitoring, Kolyma Territorial Department, 685000, Magadan, Gagarina str., 12, Russia

The research of the thermal characteristics of dispersed inflow to the low-order streams in the watershed of the Kolyma Water Balance Station typical for the Upper Kolyma basin was fulfilled. Two methods were used: direct temperature measurements in the ephemeral rivulets and estimations of heat flux resulting from dispersed feeding. It has been found out that the latter’s temperature has distinct daily variations, over larger time intervals it is influenced directly by the groundwater level, and the seasonal trend depends on the properties of soil surface. In the same climatic conditions, this quantity increases considerably with a river size. We deduced the empirical formulae of the relations between the following mean July characteristics: the air temperature, on the one hand, and the temperatures of dispersed inflow into I- and II-order streams, on the other. The used methods may be useful for investigations of suprapermafrost groundwater flow.

Rivers, groundwater feeding, dispersed inflow, thermal characteristics, temperature, heat flux
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