200 



A. M. Alekseev et al. 



electrical curves by responsive horizons and by the change in their specific 

 resistance in the region adjoining the probe apparatus. 



The qualitative analysis of curves for two-way probing consists in follow- 

 ing the character of the relationships of the positive and negative KS curves 

 in the profiles (especially their right-hand branches), and also in construct- 

 ing and studying: graphs of positive and negative KS values {KS lines) 

 for a given dispersion; graphs of positive and negative values of S (5 fines); 

 vectors maps for difference in plus and minus KS values (vectors Aq). 



In the quantitative interpretation of curves of two-way probing, not only 

 were the average KS curves processed, being largely similar to the curves 

 for vertical electrical probing, but also the plus and minus KS curves, and 

 also the derived KS curves given by the method of 0. V. Nazarenko, 

 V. A. LiPiLiN, et al. The geoelectrical sections were constructed both by 

 using a handbook of theoretical curves, calculated for the AMN arrange - 



"AZ-55 



Suvorovskii 



SidorOvKO 



Fig. 2. KS map for operating distance i? = 3000 m. 1 — centres of two-way equatorial 

 and azimuthal probes; 2 — KS isolines. 



