1. College of Geoexoloration Science and Technology, Jilin University, Changchun, China
2. Key Laboratory of Applied Geophysics, the College of Geoexoloration Science and Technology, and the Changbai Mountain Volcano Comprehensive Geophysics Field Science Observation and Research Station of Ministry of Education, Jilin University, Changchun, China
3. School of Geophysics and Measurement-Control Technology, East China University of Technology, Nanchang, China