| 山东及邻区小震活动月频次分布浅析 |
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| 引用本文： | 李霞,周彦文,张芹.山东及邻区小震活动月频次分布浅析[J].地震地磁观测与研究,2011,32(3):39-44. |
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| 作者姓名： | 李霞 周彦文 张芹 |
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| 作者单位： | 中国济南250014 山东省地震局 |
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| 基金项目： | 中国大陆7-8级地震中长期危险性预测，山东省地震局合同制项目 |
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| 摘 要： | 采用1975-2010年4月山东区域地震台网地震目录,确定研究区地震震级下限,剔除余震,对预处理后的小震活动月频次进行Kolmogorov-Smirnov分布检验,及小震月频次(X)与累计次数之间的函数拟合.结果表明,山东地区小震活动月频次符合正态分布,月频次与其累计次数之间存在类似G-R关系.对小震月频次分布的峰度K...
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| 关 键 词： | 完整震级Mc 小震活动 正态分布 月频次 山东 |
The brief distribution analysis of monthly number for small earthquakes in Shandong Province and its neighboring areas |
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| Li Xia,Zhou Yanwen,Zhang Qin.The brief distribution analysis of monthly number for small earthquakes in Shandong Province and its neighboring areas[J].Seismological and Geomagnetic Observation and Research,2011,32(3):39-44. |
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| Authors: | Li Xia Zhou Yanwen Zhang Qin |
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| Institution: | (Earthquake Administration of Shandong Province, Jinan 250014, China) |
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| Abstract: | Using earthquake catalog from 1975 to April 2010 recorded by Shandong Earthquake Net, the minimum magnitude of completeness in the study area is determined. Then the after shocks are eliminated from catalog in Shandong Province and its neighboring areas. The distribution of monthly number for small earthquakes after pretreatment and the function rela tionship between the monthly number and the accumulative frequency of the monthly number are tested. The results show that the distribution of the monthly number agrees with normal distribution, the relationship between the monthly number and the accumulative frequency resembles the G-R law. The changes of Kurtosis, Skewness, value and value of the monthly frequency with time are analyzed. It is shown that before the 13 earthquakes with ML≥5.0 in Shandong Province and its neighboring areas, monthly number changes up and down obviously. the distribution of the small earthquake |
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| Keywords: | magnitude of completeness small earthquakes normal distribution monthlynumber Shandong Province |
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