Geo-Exploration College of Science and Technology;
Jilin University;
National Astronomical Observatory;
Chinese Academy of Science;
College of Mathematics;
Jilin University Changchun;
130026 China;
Beijing;
100012 China;
Changchun;
130021 China;
sea-ice; switch; El; Nino; earthquake; swarms; tide; seesaw; phenomenon; of; oceanic; crust;