jgg     2007 27 (5):  94-98    ISSN: 0412-1961  CN: 21-1139/TG ANALYSIS OF DYNAMIC CHARACTERISTICS OF GROUND WATER BEFORE AND AFTER SECOND IMPOUNDMENT OF THREE GORGES RESERVOIR Zhang Weihua 1,2) ;Yao Yunsheng 1,2) ;Li Shengle 1,2) ; Mei Jianchang 1,2) ; and Li Jiaming 1,2) 1)Institute of Seismology，CEA，Wuhan 4300712)Crustal Movement Laboratory，Wuhan 430071 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null