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由于磁带记录的地震波内涵极为丰富,而如何揭露和识别其内涵信息,则有赖于随机信息的处理方法。为此,作者采用了动态谱及能量谱对磁带信息进行了分析。经过分析,成功地将一条地震曲线分解为两个三维曲面,即动态谱曲面及能量谱曲面。 该曲面立体地展现了地震信息的规律,这是传统的记录方式和分析方法无能为力的。做为实例,作者对广东大亚湾一带远震磁带记录进行了分析,给出了30公里长的地壳深度剖面图。 结果表明,动态谱分析的方法能够排除杂波干抗,析出强的界面反射波;而能量谱则能直观地反映出深大断裂的存在及其特征。这种方法用于研究深部构造其优越性是不言而喻的。文中还指出了将这一方法用于地震预报的可能性。
Due to the extremely rich connotation of seismic records recorded by magnetic tapes, how to expose and identify the connotation information depends on the method of processing random information. To this end, the author used the dynamic spectrum and energy spectrum to analyze the tape information. After analysis, a seismic curve is successfully decomposed into two three-dimensional surfaces, namely dynamic spectrum surface and energy spectrum surface. The surface shows the law of seismic information in three dimensions, which can not be done by traditional recording methods and analysis methods. As an example, the author analyzed teleseismic tape records in the Daya Bay area of Guangdong Province and gave a 30 km long crustal depth profile. The results show that the method of dynamic spectrum analysis can eliminate clutter and precipitate strong interfacial reflection waves, while the energy spectrum can intuitively reflect the existence and characteristics of deep faults. This method is self-evident for studying its superiority in deep structure. The paper also points out the possibility of using this method for earthquake prediction.