Affiliation: | 1. College of Exploration Technology and Engineering, Hebei GEO University, Shijiazhuang 050031, China;2. Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan 430074, China;3. Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China |