TY JOUR TI Geoelectric Monitoring of Earthen Hydraulic Structure State by Resistivity and Induced Polarization Methods: Mine Water Settling Pond Dam Case Study KW earth dam KW electrical soundings KW electrotomography KW resistivity KW frequency effect KW chargeability JO Russian Journal of Earth Sciences AU Fedorova, O.I. AU Gorshkov, V.Y. PY 2023 IS 23 PB Geophysical Center of the Russian Academy of Sciences