Abstract:Due to the special tectonic location and strong Neotectonic activities in the Bailongjiang River Basin, there are rare researches on the exploration of buried active faults in the area. The high-density electrical method, which is flexible, efficient, and easy to implement, is very suitable for the Bailongjiang River Basin with complicated terrain, whereas, there exists a serious problem of multiplicity of solutions under the complex geological environment. Based on huge amounts of geophysical data, this paper studied the electrical anomaly characteristics of hidden active faults in the basin, and divided the electrical characteristics into five categories. Among them, four categories can be used as the basis for fault identification, which mainly showed the electrical characteristics of "high (low) resistance background, low (high) resistance band". There were two reasons why electrical anomalies are difficult to be identified, namely "field layout" and "geological background". The study results showed that the electrical abnormal response of hidden active faults in Bailongjiang River Basin can be followed, and some of them can be used as the basis for qualitative or quantitative description of hidden active faults. The results can provide important reference value for the exploration of hidden active faults in the study area with high-density electrical method.
