jgg     2011 31 (3):  25-28    ISSN: 0412-1961  CN: 21-1139/TG CHARACTERISTICS OF GRAVITY CHANGE CAUSED BY CRUSTAL VERTICAL MOVEMENT IN WESTERN CHINA Duan Hurong 1,2) ;Zhang Yongzhi 2) ;,Xu Haijun 2) ; and Jiao Shengjun 1) 1)Shanxi Railway Institute, Weinan 7140002)School of Geological Engineering and Surveying, Chang’an University, Xi’an 710054 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null