| 苍山5．2级地震前地震波速比的异常变化 |
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| 引用本文： | 周焕鹏,卢守安.苍山5．2级地震前地震波速比的异常变化[J].高原地震,1996(1). |
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| 作者姓名： | 周焕鹏 卢守安 |
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| 作者单位： | 山东省地震局 |
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| 摘 要： | 本文对苍山５．２级地震前，鲁南地区地震波速比的时、空分布特征进行了分析，发现５．２级地震前，该区波速比的时、空分布都出现了较明显的低值异常。时间分布的异常形态为下降—低值—恢复—发震。空间分布则为近似圆形的低值异常区。异常区外围地区显示地震平静。苍山５．２级地震前，我们曾根据该区的波速比异常变化，对鲁南地区提出了预报意见。
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| 关 键 词： | 鲁南地区，波速比，低值异常，苍山地震 |
ANOMALOUS VARIATION OF SEISMIC WAVE VELOCITY RATIO BEFORE CANGSHAN EARTHQUAKE WITH M_s 5.2 |
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| Zhou Huanpeng,Lu Shou''''an.ANOMALOUS VARIATION OF SEISMIC WAVE VELOCITY RATIO BEFORE CANGSHAN EARTHQUAKE WITH M_s 5.2[J].Plateau Earthquake Research,1996(1). |
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| Authors: | Zhou Huanpeng Lu Shou'an |
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| Abstract: | The paper analyses the temporal and spatial distribution characters of the seismic wave velocity ratio in Lunan area befote Cangshan earthquake with Ms5.2,and it finds that the ratio appeared obvious low value anomaly.The anomalous character of temporal distribution is dropped-low value- recovery-earthquake occurrance.The spatial distribution is low value anomalous area which approached a circle,and its outlying area is seismic quiet.Before Cangshan earthquake with 5. 2,the authors put forward the predictive suggestion according to the anomalous variation of seismic wave velocity ratio in this area just before Cangshan earthquake with 5. 2. |
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| Keywords: | Lunan area Seismic wave velocity ratio Low value anomaly Cangshan earthquake |
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