| 滇西地区中强地震的余震衰减 |
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| 引用本文： | 钱晓东,秦嘉政,刘祖荫. 滇西地区中强地震的余震衰减[J]. 地震研究, 2001, 24(2): 109-114 |
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| 作者姓名： | 钱晓东 秦嘉政 刘祖荫 |
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| 作者单位： | 云南省地震局,;云南省地震局,;云南省地震局, |
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| 基金项目： | 中国地震局《大陆强震机理与预测》项目,川滇西部流动地震实验场 :数字地震、前兆场动态变化与强震机理及预测研究课题! ( 95 -13 -0 |
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| 摘 要： | 研究了滇西地区8次中强地震余震序列的衰减特征,得出了余震序列频度衰减符合修正的大森定律：（n）t=k/(t c)^p关系;余震衰减的快慢与大地热流值成正相关关系;强余震前中、小余震活动会出现平静或增强现象,即频度残差小于（平静）或大于（增强）其二倍方差,且持续一段时间,其后发生强余震的可能性较大。
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| 关 键 词： | 余震衰减 修正的大森定律 非线性时间 强余震 滇西地区 |
Attenuation of Aftershock of Moderate - Strong Earthquake in West Yunnan Area |
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| Qian Xiaodong Qin Jiazheng Liu Zuyin. Attenuation of Aftershock of Moderate - Strong Earthquake in West Yunnan Area[J]. Journal of Seismological Research, 2001, 24(2): 109-114 |
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| Authors: | Qian Xiaodong Qin Jiazheng Liu Zuyin |
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| Abstract: | Attenuation feature of aftershocks for 8 moderate - strongearthquakes in west Yunnan has been analyzed. The results show that the frequency attenuation of aftershock is accorded with the modified 大森 Law of n (t) = k/ ( t + c)p. The speed of aftershock attenuation has positive correlation with geothermal flow. The moderate- small aftershocks before strong aftershock appear quiescence or increasing. That is frequency residual is less than (quiescence) 2 times of mean - square deviation. A strong aftershock is probably to occur afterwards. |
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| Keywords: | Strong earthquake aftershock attenuation non-linear time west Yunnan area |
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