jgg     2008 28 (6):  61-67    ISSN: 0412-1961  CN: 21-1139/TG ON GRAVITY FIELD AND IT’S DYNAMICALLY EVOLUTIONAL CHARACTERISTICS OF YISHU FAULT ZONE Zhu Yiqing 1) ;Han Haihua 2) ; and Guo Shusong 1) 1) Second Monitoring and Application Center, CEA, Xi’an 7100542) Earthquake Administration of Shandong Province，Jinan 250014 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null