Ultra-Low Frequency Electromagnetic Wave Exploration to the Active Faults in Hohhot

Hohhot region is the high intensity earthquake zone due to the growth of a number of active faults.The ultra-low frequency electromagnetic detection method is used to study active faults in the region,through high-precision processing of detecting data and precise image interpretation.By using the above technology,the location,the displacement,the nature and the activity of the main three faults are clarified to serve for the urban planning,earthquake disaster prevention and mitigation in Hohhot.The difference between the maximum and minimum displacement of Dahei River fault is 110 m,which are 60 m of Xiaohei River fault and 64 m of Xinhua Square fault.These data show that the Dahei River fault is the most active fault at the end of Neogene period.