| 孕震系统中的1/f噪声行为 |
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| 引用本文： | 安镇文,叶正仁.孕震系统中的1/f噪声行为[J].地球物理学报,1997,40(3):380-385. |
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| 作者姓名： | 安镇文 叶正仁 |
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| 作者单位： | 1. 国家地震局地球物理研究所, 北京 100081;
2. 中国科学院地球物理研究所, 北京 100101 |
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| 基金项目： | 国家自然科学基金，地震科学联合基金 |
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| 摘 要： | 根据自组织临界现象理论,研究7海城、唐山等7个大地震前、后中小地震的活动特征,计算了不同孕震时期地震活动的功率谱特征.初步结果表明描述地震活动的谱幂律指数p值在大震发生前有明显的增高倾向.主震前一年及主震当年,p值一般落在闪变噪声的谱域,其他时间一般很小.最后讨论了地震孕育的物理过程及孕震系统的稳定性.
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| 关 键 词： | 随机性 孕震过程 闪变噪声 临界状态 稳定性 |
| 收稿时间： | 1995-08-11 |
THE 1 /f NOISE BEHAVIOUR IN SEISMOGENIC SYSTEM |
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| AN ZHEN-WEN,YE ZHENG-REN,TENG CHUN-KAI,WANG LIN-YING,CHEN YAO.THE 1 /f NOISE BEHAVIOUR IN SEISMOGENIC SYSTEM[J].Chinese Journal of Geophysics,1997,40(3):380-385. |
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| Authors: | AN ZHEN-WEN YE ZHENG-REN TENG CHUN-KAI WANG LIN-YING CHEN YAO |
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| Institution: | 1. Institute of Geophysics, SSB, Beijing 100081, China;
2. Institute of Geophysics, Academia Simca, Beijing 100101, China |
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| Abstract: | In this paper the characteristics of the seismic activities for Haicheng, Tangshanand other regions are studied on the base of the S0C theory' Power spectra, in themeantime, for seismic activities mentioned above are als0 calculated during the differ-ent seismogenic process' Result shows that the values 0f the power law exponent Pdescribing seisAnc activity tend obviously to arise before 1arge earthquake occurrence-0ne year before mainshock and current year, the g values, in general, fall inside thelimits of spectra domain of nicker noise, and those of another time are all verysmall' Finally, seismogenic physical process and its stability are als0 discussed' |
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| Keywords: | Stochasticity Seismogenic pr0cess Flicker noise Critical state Stability |
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