| 苍山5.2级地震的地形变特征及机制 |
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| 引用本文： | 李杰 冯志军. 苍山5.2级地震的地形变特征及机制[J]. 地震, 1997, 17(4): 417-424 |
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| 作者姓名： | 李杰 冯志军 |
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| 作者单位： | 山东省地震局!中国济南，250014，山东省地震局!中国济南，250014，山东省地震局!中国济南，250014 |
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| 基金项目： | 国家地震局“九五”攻关项目!95-04-04-03-04 |
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| 摘 要： | 运用新方法对苍山地震前后的形变资料进行了异常识别，重点分析形变异常的变化特征及机制。结果显示；（１）苍山地震是大面积应力积累、调整的结果；（２）以外围区１００－２００ｋｍ中短及短期异常为主，而震中１００ｋｍ内的近源区异常并不显著；（３）进入短期的异常标志是中短期异常出现转折或反向。
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| 关 键 词： | 地壳形变 断裂带 地震地质 地震预报 |
FEATURE AND MECHANISM OF CRUSTAL DEFORMATION OF THE CANGSHAN EARTHQUAKE WITH M_s=5. 2 |
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| Li Jie ,Feng Zhijun, Ma Yuxiang. FEATURE AND MECHANISM OF CRUSTAL DEFORMATION OF THE CANGSHAN EARTHQUAKE WITH M_s=5. 2[J]. China Earthguake Engineering Journal, 1997, 17(4): 417-424 |
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| Authors: | Li Jie Feng Zhijun Ma Yuxiang |
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| Abstract: | Using new methods, the authors recognized the anomalies of de formation data around Cangshan earthquake. The feature and mechanism of deformation anomalies are mainly analyzed. The result shows that: 1. Cangshan earthquake is the result of stress accumulation and adjustment in a large area; 2. The medium-and short-term or short-term anomalies mainly appeared in the periphery of 100~200 km from the epicenter, but the anomalies near the source area (<100 km) are not significant; 3. The sign implying the short-term anomaly is the turning or reversing of the medium-and short-term anomalies. |
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| Keywords: | Crustal deformation Anomaly Yishu fault zone Cangshan earthquake |
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