COMET School of Engineering Newcastle University Newcastle upon Tyne NE17RU UK;
COMET School of Engineering Newcastle University Newcastle upon Tyne NE17RU UK;
College of Geological Engineer-ing and Geomatics Chang' an University Xi' an 710061 China;
Key Laboratory of Western China' s Mineral Resources and Geological Engineering Ministry of Education Xi' an 710054 China;
College of Geological Engineer-ing and Geomatics Chang' an University Xi' an 710061 China;
Key Laboratory of Western China' s Mineral Resources and Geological Engineering Ministry of Education Xi' an 710054 China;
Mullard Space Science Laboratory Department of Space& Climate Physics University College London Holmbury St Mary RH56NT UK;
Key Laboratory of Crustal Dynamics Institu-te of Crustal Dynamics China Earthquake Administration Beijing 100085 China;
School of Earth and Space Sciences Peking University Beijing 100871 China;