【摘要】 蓟县垂直摆NS向2007年10月出现加速南倾异常变化,持续近2年,2009年11月开始转向加速北倾,此时,垂直摆EW向也出现东倾加速变化,针对垂直摆的异常变化,展开异常的落实与判定。本文在总结该测项数据年变形态基础上,分析了观测过程中可能存在的干扰源,与气温、库容做了相关分析、并结合同台址水管倾斜观测资料,最终判定蓟县垂直摆2009年11月开始出现的异常变化含有地震前兆信息。更多还原

【Abstract】 Observation data of vertical pendulum inclinometer in the NS direction accelerated incline to the south from Oct.2007 and lasted for 2 years,while it accelerated incline to the north since Nov.2009.At the same time,the EW direction accelerated incline to the east.In this paper,the possible disturbance sources are analyzed as well as the relationship between temperature and Yuqiao reservoir capacity based on the annual change of the data combining with data of water pipe slant instrument in the same cave.The result indicates that change since Nov.2009 was true and contained seismic precursor information.更多还原