蓟县台地形变观测资料映震效能研究
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摘要
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。
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 MS≥5.0 earthquakes;② Gravity observation data and strain tide data have prediction capability for above MS5.0 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.
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 MS≥5.0 earthquakes;② Gravity observation data and strain tide data have prediction capability for above MS5.0 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.
引文
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[2]张晶,张立.中强震前形变固体潮汐资料短期信息的提取[J].地震,2003,23(3):72-78.
[3]陈德福.潮汐形变前驱波的时空特征[J].大地测量与地球动力学,2006,26(2):24-30.
[4]蒋骏,李胜乐,张雁滨,等.地震前兆信息处理软软件系统[M].北京:地震出版社,2000.97-103,231-232.
[5]刘序俨,傅再扬,吴绍祖.地面倾斜的形变特征及计算方法[J].大地测量与地球动力学,2005,25(1):61-64.
[6]杨国华,张风霜,韩月萍,等.华北地区现今水平运动场的动态特征[J].地震,2007,27(2):1-8.
[7]邵永新,王俊国.2006年7月4日文安5.1级地震短期预测的实践[J].地震,2008,28(2):108-114.
[8]邵永新,郑文俊.天津水动态项目异常的典型特征[J].地震,2002,22(4):123-129.
[9]邵永新,李君英,田山,等.唐山7.8级地震前后地下流体动态异常演化特征[J].西北地震学报,2001,23(1):26-29.
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