| 苍山5.2级地震前的测震学异常特征 |
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| 引用本文： | 周焕鹏 徐文华. 苍山5.2级地震前的测震学异常特征[J]. 地震研究, 1999, 22(1): 42-46 |
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| 作者姓名： | 周焕鹏 徐文华 |
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| 作者单位： | [1]山东省地震局 [2]大山地震局 |
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| 基金项目： | 中国地震局九五攻关课题 |
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| 摘 要： | 本利用山东，江苏省地震台网的资料，对苍山５．２级地震前沂沭带南段地震活动性参 的变化特征进行了分析研究。发现苍山５．２级地震前沂沭带南段３、４级地震活动增强，应变能释放速率加速，地震波速比的时空变化，震前出现明显的低值异常时段和低值异常区。据比异常变化曾在震前提出过预报意见。
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| 关 键 词： | 苍山地震 迁移规律 波速比 沂沭断裂带 地震前兆 |
THE CHARACTERISTICS OF SEISMOMETRICAL ANOMALY BEFORE THE M5 2 CHANGSHAN EARTHQUAKE |
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| Zhou Huanpeng Xu Wenhua. THE CHARACTERISTICS OF SEISMOMETRICAL ANOMALY BEFORE THE M5 2 CHANGSHAN EARTHQUAKE[J]. Journal of Seismological Research, 1999, 22(1): 42-46 |
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| Authors: | Zhou Huanpeng Xu Wenhua |
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| Abstract: | Using the data from the networks in Shangdong and Jiansu Provinces, the variation characteristics of seimicity parameters in the south segment of the Yume fracture zone before the M5 2 Changshan earthquake are analyzed in this paper. The anomalous variations before the earthquake including M3 4 seismicity increase, increase of release rate of strain energy and time-space variation in Vp/Vs ratio were found and on these grouds, the prediction opinion was put forward before the earthquake. |
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| Keywords: | The Changshan earthquake migration law Vp/Vs ratio and the Yimu fracture zone. |
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