APPLICATION OF ELECTRICAL TOMOGRAPHY TO DETECTING AQUIFERS IN GEOLOGICAL CONDITIONS OF THE EASTERN NOVOSIBIRSK REGION

The current condition of the most surface water bodies in the Novosibirsk Region falls short of the effective ecological standards and urban development requirements. For this reason, significance of the underground sources of drinking and domestic water supply grows. Given financial constraints, it is of specific concern to enhance efficiency of exploration in construction of new water supply wells. This study is aimed to develop a prospecting procedure for shallow aquifers in the eastern Novosibirsk Region using electrical tomography and mathematical modeling, including 3D, for selecting optimal sites for water supply wells. The geological and hydrogeological structure of the eastern Novosibirsk Region was studied by geological field parties in the 1950s–60s and amended in the 1990s and 2000s. These data are used for construction of geological sections and interpretation of geophysical surveys. For updating of hydrochemical characteristics of groundwater, water was sampled in each operating well. The implemented research shows that the method of electrical tomography is efficient in the most of the eastern districts in the Novosibirsk Region. Three-dimensional mathematical modeling specifies location of objects with contrast values of electrical resistance and their effect on the data collected. Such objects are faults and fractured zones in the Paleozoic deposits, which are considered as promising sources of drinking and domestic water supply. Groundwater in these zones is fresh and contains calcium hydrocarbonate. The research findings are illustrated by examples.

 

Acknowledgements: The study was supported by the Russian Foundation for Basic Research and by the Novosibirsk Region Government, Project No. 18-45-540011, baseline project of the Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences.


For citation: Sanchaa A. М., Fage A. N., Shemelina O. V. Application of electrical tomography to detecting aquifers in geological conditions of the eastern Novosibirsk Region. MIAB. Mining Inf. Anal. Bull. 2019;(10):90-105. [In Russ]. DOI: 10.25018/0236-1493-2019-10-0-90-105.

Keywords

Novosibirsk Region, electrical tomography, specific electrical resistance, mathematical modeling, aquifer, groundwater.

Issue number: 10
Year: 2019
ISBN: 0236-1493
UDK: 550.837.3
DOI: 10.25018/0236-1493-2019-10-0-90-105
Authors: Sanchaa A. М., Fage A. N., Shemelina O. V.

About authors: A.М. Sanchaa (1), Cand. Sci. (Geol. Mineral.), Leading Researcher, e-mail: SanchaaAM@ipgg.sbras.ru, A.N. Fage (1), Researcher, O.V. Shemelina, Researcher, e-mail: Shem@igm.nsc.ru, Sobolev Institute of Geology and Mineralogy of Siberian Branch of Russian Academy of Science, 630090, Novosibirsk, Russia, 1) Trofimuk Institute of Petroleum Geology and Geophysics of Siberian Branch of Russian Academy of Science, 630090, Novosibirsk, Russia. Corresponding author: A.М. Sanchaa, e-mail: SanchaaAM@ipgg.sbras.ru.

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