SERGEY VLADIMIROVICH ALEXEEV (February 16, 1959-December 25, 2025)
L.P. Alekseeva1, V.R. Alekseev2
1Institute of the Earth’s Crust, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russia
2Melnikov Permafrost Institute, Siberian Branch of the Russian Academy of Sciences, Yakutsk, Russia
Keywords: hydrogeology, permafrost, frozen ground, groundwater, brines, cryohydrogeological systems, Siberian Platform, Yakutian diamond-bearing province
Abstract
On December 25, 2025, at the age of 66, Sergey Vladimirovich Alexeev, Corresponding Member of the Russian Academy of Natural Sciences, Doctor of Geological and Mineralogical Sciences, chief researcher at the Institute of the Earth’s Crust of the Siberian Branch of the Russian Academy of Sciences, a recognized leader in the field of permafrost hydrogeology, passed away. Sergey Alexeev will remain in the memory of the scientific community as an outstanding researcher of the frozen zone of the lithosphere, the author of fundamental works on cryohydrogeology, a talented science manager and teacher.
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