Earth’s Cryosphere, 2018, Vol. XXII, No. 2, p. 26-34
CRYOHYDROGEOLOGICAL FEATURES OF THE SITE OF INTRAPERMAFROST AQUIFER DISTRIBUTION IN THE ERUU SPRING AREA (CENTRAL YAKUTIA)
A.A. Semernya, L.A. Gagarin, K.I. Bazhin
Melnikov Permafrost Institute, SB RAS, 36, Merzlotnaya str., Yakutsk, 677010, Russia; gagarinla@gmail.com
The paper presents the results of long-term permafrost and hydrogeological research conducted by Melnikov Permafrost Institute SB RAS in the area of one of the perennial intrapermafrost springs residing in the territory of Central Yakutia. Spatial boundaries of the intrapermafrost aquifer feeding Eruu spring are determined from the drilling and geophysical survey data. Results of the groundwater level monitoring data processing allowed to define conditions of groundwater accumulation and discharge, as well as to establish the major role of icings (aufeis) in the hydrodynamic regime of intrapermafrost waters. The revealed specific geothermal characteristics of the upper rock layers may serve as indicators of groundwater presence on the fourth (Bestyakh) terrace of the Lena River, which is evidenced by the maximum thaw depth coinciding with the depth of zero annual amplitude.
Intrapermafrost aquifer, groundwater level dynamics, natural resources of groundwater, aquifer top and base, heat exchange, filtration parameters, accumulation of groundwater resources