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Multifractal Detrended Fluctuation Analysis of Interevent Time Series in a Modified OFC Model |
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| Authors: | LIN Min YAN Shuang-Xi ZHAO Gang WANG Gang |
| Institution: | 1. Department of Mathematics, Ocean University of China, Qingdao 266100, China; 2. College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China; 3. Faculty of Transportation Engineering of Huaiyin Institute of Technology, Huai'an 223003, China; 4. Key Laboratory of Data Analysis and Applications (LDAA), First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China |
| Abstract: | We use multifractal detrended fluctuation analysis(MF-DFA) method to investigate the multifractal behavior of the interevent time series in a modified Olami-Feder-Christensen(OFC) earthquake model on assortative scale-free networks.We determine generalized Hurst exponent and singularity spectrum and find that these fluctuations have multifractal nature.Comparing the MF-DFA results for the original interevent time series with those for shuffled and surrogate series,we conclude that the origin of multifractality is due to both the broadness of probability density function and long-range correlation. |
| Keywords: | multifractal detrended fluctuation analysis avalanche correlations |
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