Dynamics of the physicochemical characteristics of the thermomineral waters of the Daginsky field (before the reconstruction of the springs in 2019–2020)

• DOI: 10.30730/gtrz.2022.6.3.183-194
• Publication Date: 2022-10-07T05:30:33Z
• Authors: O.A. Nikitenko; V.V. Ershov; ; R.V. Zharkov; ; G.V. Ustyugov
• Keywords: Dynamic and structural geology; thermomineral waters; Stratigraphy; QE420-499; chemical composition; TA703-712; QE500-639.5; Engineering geology. Rock mechanics. Soil mechanics. Underground construction; sakhalin island; hydrochemical geothermometers; QE640-699; Petrology

The paper presents the results of studies (2017 and 2019) physicochemical characteristics thermomineral waters Daginsky field, obtained before reconstruction springs in 2019–2020. data were compared with from previous years (1958–2014) order to study dynamics measured indicators over time. It was found that field are characterized by constancy chemical composition reservoir temperatures calculated means hydrochemical geothermometers. This fact indicates a stable hydrogeological regime field. For many years, spatial hydrogeochemical heterogeneity has also been preserved within which consists differences some (surface temperatures, concentrations Na+, Cl–, SO42–, HCO3–, etc.) discharged different sites (Northern, Central, Southern). is shown content microcomponents (B, Br–, Li+) studied waters, laboratories (or methods analysis) can differ significantly. most reliable estimates using Na-K, K-Mg SiO2 mainly range 60 to100 °С, corresponds circulation depth about 2–3 km. These researches provide basis for studying further including after springs.