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  1. No Access

    Article

    Assessment of River Runoff Formation Sources in the Mountain-Arid Zone by Data on Water Isotopic Composition

    An isotope–hydrochemical study of the surface and groundwater was carried out in the basin of the Ala-Archa River located on the Northern slope of the Kyrgyz ridge, Kyrgyzstan. The results of studies of stable...

    E. Yu. Yakovlev, I. V. Tokarev, S. A. Erokhin, T. V. Tuzova… in Water Resources (2023)

  2. No Access

    Article

    Disequilibrium Uranium (234U/238U) in Natural Aqueous Objects and Climatic Variations: World Ocean

    Natural waters usually demonstrate the disturbance of radioactive equilibrium between parent 238U and and daughter 234U (usually, 234U/238U ≈ 0.8–3 in activities). The ratio of 234U/238U > 10 found in groundwater...

    I. V. Tokarev, E. Yu. Yakovlev, S. B. Zykov, I. A. Zimina in Geochemistry International (2021)

  3. No Access

    Article

    Heavy metals and radionuclides distribution and environmental risk assessment in soils of the Severodvinsk industrial district, NW Russia

    The article is devoted to the study of the content of heavy metals and radionuclides in soils of the environments of the Severodvinsk industrial district (Northwest Russia). The city of Severodvinsk is the lar...

    E. Yu. Yakovlev, E. N. Zykova, S. B. Zykov, A. V. Malkov… in Environmental Earth Sciences (2020)

  4. No Access

    Article

    Uranium isotopes in groundwater of the Mezen syneclise Vend

    Higher activities of U isotopes were recorded in hydrocarbonate freshwater on watersheds in the regions of occurrence of red Vend sandstones, Fe concentrations being minimal. The lowest activities of U isotope...

    A. I. Malov, G. P. Kiselev, G. P. Rudik, S. B. Zykov in Water Resources (2009)