| 地震活动性分析中余震的删除 |
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| 引用本文： | 陈凌,刘杰,陈颙,陈龙生.地震活动性分析中余震的删除[J].地球物理学报,1998,41(Z1):244-252. |
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| 作者姓名： | 陈凌 刘杰 陈颙 陈龙生 |
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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. 国家地震局分析预报中心, 北京 100036;
3. 国家地震局, 北京 100036;
4. 香港大学地球科学系, 香港 |
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| 摘 要： | 介绍了几种删除余震的方法，并从地震断层的角度，提出了一种删除余震的新的震级相关时空窗法．采用这些方法，分别对4个具有不同时空尺度的地震目录删除了余震，并对原始目录及删除余震后的目录作了频度统计和R／S分析结果表明删除余震后，地震时间过程的平稳性明显提高，地震事件的独立性增强但仍存在着一定的非随机因素，主要表现在对地震时问过程的R／S分析中，Haret指数H＞0．5．在此基础上，进一步讨论了删除余震方法及其有效性的检验．
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| 关 键 词： | 余震 随机性 R／S分析 Hurst指数 |
| 收稿时间： | 1997-04-01 |
AFIERSHOCK DELETION IN SEISMICITY ANALYSIS |
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| CHEN LING,LIU JIE,CHEN OU,CHEN LONG-SHENG.AFIERSHOCK DELETION IN SEISMICITY ANALYSIS[J].Chinese Journal of Geophysics,1998,41(Z1):244-252. |
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| Authors: | CHEN LING LIU JIE CHEN OU CHEN LONG-SHENG |
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| Institution: | 1. Institute of Geophysics, State Seismological Bureau, Beijing 100081, China;
2. Center for Analysis and Prediction, State Seismological Bureau, Beijing 100036, China;
3. State Seismological Bfureau, Beijing 100036, China;
3. Department of Earth Sciences, The University of Hong Kong, Hong Kong, China |
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| Abstract: | In this paper, several methods of aftershock deletion are reviewed, and a magnitude-dependent method from the point of earthquake fault is proposed. The four earthquake catalogues with different time and space scales have been subjected to aftershock removal using these methods. Frequency counting and R/S analyses are performed on both the original and the edited catalogues. The results show that the aftershock-deleted earthquake sequences in time are distributed more stationaly and independently than original ones. But, there still exist some nonrandom factors, which mainly show that Hurst exponent H>0.5 in the R/S analysis. Finally, effectiveness testing for aftershock deletion methods and their results are made further discussion. |
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| Keywords: | Aftershock Random R/S analysis Hurst exponent |
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