Abstract
In this paper we calculate the local fractal dimension valuesD of the self-affine feature of earthquake time series by RMS (root-mean-square) error method, and express the fractal dimensionality by the normalized correlation coefficientR. The fractal dimension values are given for earthquakes occurred in Tangshan, Haicheng, Songpan, Longling, Changshu, Liyang in China and its vicinity by the moving scanning method with different magnitude thresholds and the fixed-window length (100 events). The results show theD values are characterized by decreasing, continued low level in values or by decreasing first and then increasing before moderate earthquakes.
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