Hydrogeophysical Characterization of shallow karst using electrical resistivity tomography (ERT) in a limestone mining area

Huaifeng Sun1, Zhipeng Qi2, Xiu Li Sr.3, Xiuyuan Ma4, Yiguo Xue4, Qingsong Zhang4 and Xiao Zhang4, (1)Shandong University, Laboratory of Earth Electromagnetic Exploration, Jinan, China, (2)Chang'an Univ, Xi'an, China, (3)Chang'an University, Xi'an, China, (4)Shandong University, Geotechnical engineering research center, Jinan, China