State Key Laboratory of Lunar and Planetary Sciences University of Science and Technology;
CNSA Macao Center for Space Exploration and Science;
School of Geosciences and Info-Physics South University 410083;
Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring of Education(Central South University) 410083;
Hunan Key Laboratory of Nonferrous Resources and Geological Hazards Exploration South University 410083;
global electromagnetic induction; mantle electrical conductivity; finite volume method; unstructured grids;