泰安台钻孔差应变观测的实地标定  

IN-SITU CALIBRATION OF BOREHOLE SHEAR STRAINMETER AT TAIAN STATION

作　　者：阚宝祥[1] 邱泽华[1] 唐磊[1] 

机构地区：[1]中国地震局地壳应力研究所,北京100085

出　　处：《大地测量与地球动力学》2007年第6期119-123,共5页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(40374011);地震科学联合基金(1040037)

摘　　要：结合钻孔差应变仪的工作原理,借助体应变观测资料,提出了利用理论固体潮对泰安台差应变观测进行实地标定的新方法。通过对标定系数和滞后时间的分析认为:元件2、4工作状况比较稳定,观测值差应变2是比较可靠的;元件3的标定系数浮动较大。经过实地标定后,差应变1、2基本上与各自的理论值相一致。由于标定系数随时间变化,所以要针对特定问题的时间段进行实地标定。On the basis of operating principle and the observations by borehole shear strainmeter and by use of theoretical earth tide,a new method for in-situ calibration of borehole shear strainmeter at Taian station is presented. The results show that the data of shear strain 2 are reliable because the component 2 and 4 of shear strainmeter work normally. The calibration coefficients of component 3 are considerably fluctuant. The data of shear strain 1 and 2 agree with their theoretical values on the whole after in-situ calibration. The shear strain observations have to be calibrated in different periods of specific issues, as the calibration coefficients change with time.

关 键 词：泰安台 钻孔差应变观测 实地标定 理论固体潮 时间滞后 

分 类 号：P315.62[天文地球—地震学]