Geoelectric section of the Selenga river water area based on the results of VLF-LF radio impedance soundings

Abstract

The surface impedance and geoelectric section of the Selenga River in the area of the Ulan-Ude water intake station were determined based on measurements by radio impedance sounding in the very-long-wave - long-wave (VLF-LF) radio wave bands. Radio impedance sounding by IPI-300 equipment on a 360 m long profile made it possible to determine the electrical properties and structure of the layered medium "ice-water-bottom soil" by changing the impedance and geoelectric section. The thickness of the ice on the ice track varied from 0.6 m to 1.2 m. The electrical resistivity of water from wells was 71 Ohm·m at a temperature of 1°C. An electromagnetic model of the Selenga River water area based on the local electrical characteristics of the underlying medium has been created.