jgg     2011 31 (3):  38-41    ISSN: 0412-1961  CN: 21-1139/TG RESEARCH ON STABILITY OF CRUST IN HEXI AREA BASED ON CRUSTAL GRAVITY ISOSTASY THEORY Guo Shusong 1) ;Zhu Yiqing 1,2) ; and Liu Fang 1) 1)Second Crust Monitoring and Application Center，CEA，Xi’an 7100542)Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null