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《Chinese Journal of Geophysics》 2002-06
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THE GENERALIZED FRACTAL DIMENSION OFSEISMIC RECORDS AND ITS APPLICATIONS

CHANG XULIU YI-KE(The Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100101, China)  
Based on fractal theory, the fractal dimension character is construed to the seismic records with different noises. The both of signal part and noise background part in seismic records have a different fractal dimensional range that depends on the measuring rulers used in the calculation, and the fractal dimensional values are relative with the measuring rulers. Therefore, a new concept that is generalized fractal dimension can be used to calculate the fractal dimension of seismic record. The results of numerical calculation indicate that the algorithm of generalized fractal dimension shows a strong resistance to noise. Some effective examples to pick seismic first arrivals and continued signals are given in this paper.
【Key Words】: Generalized fractal Seismic signal Automatic pick-up.
【Fund】: 中国科学院知识创新工程重要方向项目 (KZCX2 -1 1 2 );; 国家自然科学基金项目 (4 0 1 740 1 7) .
【CateGory Index】: P315
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