海原形变观测资料异常分析
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摘要
对海原台CZB-1型竖直摆钻孔倾斜仪记录到的地表倾斜方向的异常变化进行了分析,同时对该台YRY-4型分量应变仪依据自检方法表现出的压缩及伸张性异常进行了提取,得出以上两测项观测资料在宁夏南部发生的3次Ms3.0级以上有感地震的2次地震前出现了一定的异常信息,与地震有所对应。
The anomalies of the surface tilt directions recorded by CZB-1 Vertical Pendulum Tiltmeter in Haiyuan seismic station are analyzed,and the compressed and stretched anomalies recorded by YRY-4 Component Strainmeter are chosen,and found these data presented anomalies just before two earthquakes with Ms≥3.0 occurred in southern Ningxia,and this shows that the data are corresponded to the earthquakes.
The anomalies of the surface tilt directions recorded by CZB-1 Vertical Pendulum Tiltmeter in Haiyuan seismic station are analyzed,and the compressed and stretched anomalies recorded by YRY-4 Component Strainmeter are chosen,and found these data presented anomalies just before two earthquakes with Ms≥3.0 occurred in southern Ningxia,and this shows that the data are corresponded to the earthquakes.
引文
[1]张立强.海原地震台2008年汶川大地震钻孔应变观测报告[J].地壳构造与地壳应力,2008,(1):14-18.
[2]池顺良,池毅,邓涛,等.从5.12汶川地震前后分量应变仪观测到的应变异常看建设密集应变观测网络的必要性[J].国际地震动态,2009,(1):9-10.
[2]池顺良,池毅,邓涛,等.从5.12汶川地震前后分量应变仪观测到的应变异常看建设密集应变观测网络的必要性[J].国际地震动态,2009,(1):9-10.
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