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| 基于EMD的中国大陆强震活动特征分析 | |
| 引用本文： | 李志雄,朱航,刘杰,曾钢平,丘学林.基于EMD的中国大陆强震活动特征分析[J].地震,2007,27(3):57-62. |
| 作者姓名： | 李志雄 朱航 刘杰 曾钢平 丘学林 |
| 作者单位： | 1. 海南省地震局,海南,海口,570203 2. 四川省地震局,四川,成都,610041 3. 中国地震台网中心,北京,100036 4. 中国科学院南海海洋研究所,广东,广州,510301 |
| 基金项目： | 地震科学联合基金项目(105086)，中科院边缘海地质重点实验室课题(MSGL0503)资助 |
| 摘 要： | 利用EMD方法对中国大陆年度最大地震时间序列进行逐级分解,得到5个本征模态函数(IMF)项和1个趋势项,分析了各个IMF分量不同的周期成分同地球自转速度变化、太阳黑子活动和潮汐运动等环境因子之间的相关关系,初步探讨了各个IMF分量的物理机理及其对中国大陆地震活动的影响。 |
| 关 键 词： | EMD方法 强震活动 地球自转 太阳黑子 潮汐运动 |
| 文章编号： | 1000-3274（2007）03-0057-06 |
| 修稿时间： | 2007-03-132007-04-06 |
Analysis on Characteristics of Strong Earthquake Activity in Chinese Mainland Based on Empirical Mode Decomposition (EMD) Method |
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| LI Zhi-xiong,ZHU Hang,LIU Jie,ZENG Gang-ping,QIU Xue-lin.Analysis on Characteristics of Strong Earthquake Activity in Chinese Mainland Based on Empirical Mode Decomposition (EMD) Method[J].Earthquake,2007,27(3):57-62. | |
| Authors: | LI Zhi-xiong ZHU Hang LIU Jie ZENG Gang-ping QIU Xue-lin |
| Institution: | 1. Earthquake Administration of Hainan Province, Haikou 570203; 2. Earthquake Administration of Sichuan Province, Chengdu 610041; 3. China Earthquake Networks Center, CEA, Beijing 100036; 4. South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China |
| Abstract: | The time series of annual maximum earthquakes in Chinese mainland was decomposed systematically based on Empirical Mode Decomposition(EMD) method,the five Intrinsic Mode Function(IMF) components and the trend component were obtained.The correlation was analyzed between the different period factors of the IMF and the environment factors such as the variation of the earth rotation,the sunspot activity,and tidal motion and so on.The physical mechanism of the IMF components and its impact on the earthquake activity in Chinese mainland was preliminarily discussed. |
| Keywords: | EMD Method Activity of strong earthquakes Earth rotation Sunspot Tide movement |
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