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经验模态分解法提取地磁脉动
Use Empirical Mode Decomposition to pick up geomagnetic pulsation
- DOI:
- 作者:
- 张敏1) 王喜珍2) 赵石柱3)
Zhang Min1) Wang Xizhen2) Zhao Shizhu3)
- 作者单位:
- 1)中国新疆 830011 新疆维吾尔自治区地震局 2)中国北京 100081 中国地震局地球物理研究所3)中国新疆 830011 新疆维吾尔自治区地震局
1)Xinjiang 830011 China, Xinjiang Seismological Bureau, 2) Beijing 100081 China,China earthquake administration,institute of geophysics 3) Xinjiang 830011 China ,Xinjiang Seismological Bureau,
- 关键词:
- 地磁脉动；经验模态分解；子午链
geomagnetic pulsation empirical mode decomposition meridian chain
- 摘要:
- 选取磁通门磁力仪数据，利用经验模态分解法提取地磁脉动，并与传统的小波分解法提取地磁脉动方法作对比分析，分析子午链区域几个地磁台站提取的地磁脉动的纬度效应和经度效应。结果表明，经验模态分解法提取的地磁脉动形态清晰，易于辨识，与小波法相比，不用选择基函数，且更适合于分析非稳态信号。
This paper select gm4 original data,use empirical mode decomposition method to pick up geomagnetic pulsation,and in contrast to wavelet decomposition method.we also analyze the latitude effect and longitude effect of many geomagnetic station in meridian chain region.The result shows that the shape of geomagnetic pulsation which pick up by empirical mode decomposition method is clear and very easy to recognize.In contrast to wavelet method,empirical mode decomposition method do not need to choose base function,much more suitable for analyze nonsteady signal.
