jgg     2014 34 (1):  63-67    ISSN: 0412-1961  CN: 21-1139/TG NUMERICAL SIMULATION OF SPATIOTEMPORAL DISTRIBUTION  OF SHEAR STRAIN WITH STEEP DROP OF Z-SHAPED FAULT SYSTEM 1)College of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000 2)Laboratory of Earthquake Dynamics, Institute of Geology, CEA, Beijing 100029 Received: 2013-05-24  Revised: null  Online: 2014-01-23 Supporting info