The Study of Soil Electrical Resistivity Changes According to the Electrical Electrometric Monitoring Results Near Volokolamsk

The two-piece array was used to observe resistivity changes during 2 months. There are 10 current electrodes AB in the first segment and 10 measuring electrodes MN in the second segment. The AB line is established parallel to the MN line. The distance between the two lines is about 2.5 m. The electrode step is 1 m. 45 combinations of AB electrodes and the 9 MN dipoles were used during the current generation. Each measurement was repeated 3 times. Thus a single cycle (shoot) consisted of 1215 measurements. Shoots were repeated every 3 hours. All receiver electrodes are provided with digital thermometers. The beginning of the measurements was in a warm weather with temperature +5C. The end of the measurements took place, when the temperature dropped be-low −10C. The monitoring results show that after the formation of the snow cover real values Umn/Iab are independent from air temperature. However, there is a stable inverse relationship Umn/Iab with electrical field sensor temperature.