jgg     2012 32 (1):  47-50    ISSN: 0412-1961  CN: 21-1139/TG ON HIGH SAMPLE RATE OF BOREHOLE VOLUME STRAINMETER OBSERVATION Guo Yanping 1) ;Qiu Zehua 1) ;Li Suhua 2) ;Yan Minzheng 3) ;Song Zhiying 2) ; and Tang Lei 1) 1)Institute of Crustal Dynamics，CEA，Beijing 100085;2)Xiyang Seismostation of Earthquake Administration of Shanxi Province，Xiyang 045300;3)Earthquake Administration of Shanxi Province，Taiyuan 030002 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null