| 海城7.3级地震的地倾斜异常特征及分析方法 |
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| 引用本文： | 关兴国.海城7.3级地震的地倾斜异常特征及分析方法[J].地球物理学报,1980,23(3):333-340. |
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| 作者姓名： | 关兴国 |
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| 作者单位： | 沈阳基准地震台 |
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| 摘 要： | 本文总结了海城地震的中期、短期和临震阶段的地倾斜异常特征。指出中期异常的特征是破坏年变化规律,异常时间在半年以上,幅度可达几个角秒。短期异常的特征是打结和转向,异常时间一至二个月。临震异常的特征是破坏日变化规律,异常时间在震前几天,且仅在震中附近才有明显反应。
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| 关 键 词： | 地倾斜异常 地倾斜观测 海城地震 角秒 阳台 短期异常 矢量曲线 临震异常 分析方法 震前 |
| 收稿时间： | 1978-10-28 |
CHARACTERISTICS AND ANALYSIS OF EARTH-TILT ANOMALIES BEFORE THE HAICHENG EARTHQUAKE OF M 7.3 |
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| Guan Xing-guo.CHARACTERISTICS AND ANALYSIS OF EARTH-TILT ANOMALIES BEFORE THE HAICHENG EARTHQUAKE OF M 7.3[J].Chinese Journal of Geophysics,1980,23(3):333-340. |
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| Authors: | Guan Xing-guo |
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| Institution: | Shenyang Seismic Station |
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| Abstract: | In this paper, the medium-range, short-range and imminent earth-tilt anomalies before the Haicheng earthquake are examined. The medium-range tilt anomaly was characterized by the violation of the regularity of annual variation. The magnitude of the anomaly may amount to a few seconds and lasted for about half a year. The short-range anomaly was characterized by sudden changes of directions of tilt. It lasted for one or two months. When the earthquake was imminent, the anomaly was characterized by the violation of the smoothness of diurnal variations . It lasted for only a few days before the earthquake and was observed only in the vicinity of the forthcoming epicenter. |
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