1. Department of Geophysics, College for Geoexploration Science and Technology, Jilin University, 938Ximinzhu Street, Changchun 130026, China
2. Institute of Geophysical and Geochemical Exploration (IGGE), Chinese Academy of Geological Sciences (CAGS), Langfang 065000, China
3. Department of Geosciences, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia