1. Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang, 065000, China
2. The National Center for Geological Exploration Technology, Langfang, 065000, China
3. College of GeoExploration Science and Technology, Jilin University, Changchun, 130026, China
4. School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing, 100083, China