大同地震地下水群体异常周期分析
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摘要
利用最大嫡谱和博氏分析方法分析了大同地震地下水群体异常的周期特征。结果表明．地下水群体异常存在着一系列的周期成分．其中4个月的周期成分显著，分波的振幅在大震前发生畸变。对这些现象的认识，将有助于识别异常的性质（有震，无震）．揭示异常与地震的复杂对应关系。对正确的震情分析判断和地震预报具有重要的实用意义。
In this paper, we have analysed the periodicity of underground water grouped anomalies before andafter the Datong earthquake by maximum entropy spectrum and Fourier method. The results showedthat the underground water grouped anomalies have a series of periodicities, and the four month periodicity is obvious, the amplitude of the subwave is distorted before strong earthquakes. By using themethod we may judge the anomaly nanture (as earthquake, no earthquake), and judge the complex relation of the anomaly to the eathquake, proved that the method has important practical sense to judgeearthquake situation and predict earthquake.
In this paper, we have analysed the periodicity of underground water grouped anomalies before andafter the Datong earthquake by maximum entropy spectrum and Fourier method. The results showedthat the underground water grouped anomalies have a series of periodicities, and the four month periodicity is obvious, the amplitude of the subwave is distorted before strong earthquakes. By using themethod we may judge the anomaly nanture (as earthquake, no earthquake), and judge the complex relation of the anomaly to the eathquake, proved that the method has important practical sense to judgeearthquake situation and predict earthquake.
引文
1王吉易,董守玉,等.地下流体附加力源的研究新思路.华北地震科学, 1995, 13(2).
2张素欣,等.水氡群体异常频次序列的周期分析.地震,16,2,1996.
3李文英,等.河北省北部地区地震时间序列的最大熵谱分析.华北地震科学, 1989, 7(1): 58—64
4王吉易,等.异常系列分析预报新方法探讨.华北地震科学, 1991, 9(1).
2张素欣,等.水氡群体异常频次序列的周期分析.地震,16,2,1996.
3李文英,等.河北省北部地区地震时间序列的最大熵谱分析.华北地震科学, 1989, 7(1): 58—64
4王吉易,等.异常系列分析预报新方法探讨.华北地震科学, 1991, 9(1).
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