jgg     2012 32 (增1):  141-142    ISSN: 0412-1961  CN: 21-1139/TG DIFFERENTIAL CAPACITANCE TYPE SENSOR BASED ON VARIABLE AREA Wu Peng 1,2) ;Guo Xiaofei 1,2) ;Chen Zhigao 1,2) ;Xia Jiening 1,2) ; and Yang Jian 1,2) 1)Key Laboratory of Earthquake Geodesy,Institute of Seismology, CEA, Wuhan 430071;2)Wuhan Base of Institute of Crustal Dynamics,CEA,Wuhan 430071 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null