| P波初动方向变化的震时监测预报意义 |
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| 引用本文： | 唐燕娟. P波初动方向变化的震时监测预报意义[J]. 地震研究, 1994, 17(4): 396-401 |
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| 作者姓名： | 唐燕娟 |
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| 作者单位： | 上海佘山地震台 |
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| 摘 要： | 本文根据Ｐ波初动方向来判断在同一次地震群中，最大的一次地震发生后，有一次或几次地震的Ｐ波初动方向会改变，由此可以判断主震已过。此方法简单明了，在有感地震发生后能随时判断以后的Ｐ波初动方向，一旦方向改变说明不会再有大地震来了。在临震监测预报中具有一定意义。
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| 关 键 词： | 地震预报 地震图 P波初动 地震波 |
SIGNIFICANCE OF DIRECTION CHANGES OF P-WAVE ONSET FOR EARTHQUAKE DETECTION AND PREDICTION |
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| Tang Yanjuan. SIGNIFICANCE OF DIRECTION CHANGES OF P-WAVE ONSET FOR EARTHQUAKE DETECTION AND PREDICTION[J]. Journal of Seismological Research, 1994, 17(4): 396-401 |
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| Authors: | Tang Yanjuan |
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| Abstract: | From the data, seismograms, accumulated for many years, the author has presented a method to determine if the main earthquake has happened based on the direction of P-wave. It has been found that after a big earthquakc in a group of earthquakes, if the following earthquakes have changed their direction of P-wave onset, the main earthquake has passed.This method is simple and useful for understanding earthquake happened in near future and reassuring public. |
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| Keywords: | Earthquake prediction Seismograms P-wave onset Main shocks |
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