1. Department of Geophysics, Key Laboratory of Geoghysical Exploration Equipment, Ministry of Education, Jilin University , No.938 Xi MinZhu Street, Changchun, Jilin Province 130026 , China
2. Department of Geophysics, College of Geo-Exploration Science and Technology, Jilin University , No.938 Xi MinZhu Street, Changchun, Jilin Province 130026 , China
3. Department of Earth, Atmospheric and Planetary Sciences (EAPS), Earth Resources Laboratory, Massachusetts Institute of Technology , Room 54-225, 77 Massachusetts Avenue, Cambridge, MA 02139 , USA
4. Biomedical Engineering Department, 44 Cummington Mall, Boston University , Boston, MA 02215 , USA