| 大震前P波出射角和方位角的异常变化 |
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| 引用本文： | 郭瑞芝,冯德益,陈化然.大震前P波出射角和方位角的异常变化[J].大地测量与地球动力学,1995(3). |
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| 作者姓名： | 郭瑞芝 冯德益 陈化然 |
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| 作者单位： | 天津市地震局 |
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| 摘 要： | 给出了数字化地震记录Ｐ波初始部分平均出射角和方位角的分析处理方法，研究了山西大同ＭＬ＝６．１级地震以及唐山ＭＬ＝５．６级地震前出射角与方位角出现的异常变化，并对地震前地震波动力学特征的这一类前兆异常现象进行了初步讨论。
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| 关 键 词： | P波，方位变化，地震前兆，出射角 |
ANOMALOUS VARIATIONS OF P-WAVE EMERGENCE AND AZIMUTH ANGLE BEFORE LARGE EARTHQUAKES |
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| Guo Ruizhi,Feng Deyi and Chen Huaran.ANOMALOUS VARIATIONS OF P-WAVE EMERGENCE AND AZIMUTH ANGLE BEFORE LARGE EARTHQUAKES[J].Journal of Geodesy and Geodynamics,1995(3). |
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| Authors: | Guo Ruizhi Feng Deyi and Chen Huaran |
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| Abstract: | In this paper,the processing and analyzing method of mean P-wave emergence angle and azimuth angle from the digital seismic records is given,and the anomalous variations of mean P-wave emetgence and azimuth angle before Datong(ML=6.1) and Tangshan(ML=5.6) earthquakes have emphatically been studied.Finally,the seismic wave dynamical characteristics are preliminarily discussed as a kind of precursory phenomena before large earthquake. |
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| Keywords: | P-wave azimuth variation earthquake precursor emergence angle |
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