jgg     2009 29 (增刊):  15-19    ISSN: 0412-1961  CN: 21-1139/TG GRAVITY DISTURBANCE OF HIGH FREQUCNCY AT CHENGDU SEISMOSTATION BEFORE WENCHUAN Ms8.0 EARTHQUAKE Wei Jin 1,2) ; Hao Hongtao 1,2) ; Kang Kaixuan 1,2) ; Liu Ziwei 1,2) ; Yu Jielin 1,2) ;Sun Shaoan 1,2) ;Shen Chongyang 1,2) ; and Li Hui 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