蓟县台地形变观测资料映震效能研究

该文对蓟县地震台固体潮观测各测项数据进行了计算和分析,提取了华北地区中等以上地震的短、临前兆信息。 结果表明,该台固体潮观测对华北中等以上地震有一定的监测能力,其中: ① 水管倾斜仪和垂直摆倾斜仪观测资料对华北地区中强及中强以上地震有中、短期预报能力; ② 重力和伸缩应变资料对华北地区中强地震及首都圈地区中等以上地震有短期甚至短临预报价值; ③ 伸缩应变资料对地震方位的预测具有一定的指示意义。

Prediction Capability Analysis of Solid Tidal Deformation Data in Jixian Seismic Station,Hebei Province

This paper calculates and analyses solid tidal deformation data observed at Jixian seismic station, Hebei province. Short period and impending earthquake precursory anomalies before the above medium earthquakes in North China are extracted. The results show that the deformation data at Jixian seismic station have monitoring capability for ability above medium earthquakes in North China. ① Water tube tiltmeter and vertical pendulum tiltmeter data have medium to short period prediction capability for M_S≥5.0 earthquakes; ② Gravity observation data and strain tide data have prediction capability for above M_S5.0 earthquakes in North China and above medium earthquake in the Capital area; ③ Strain tide data have some indicating sense for azimuth of the epicenter.