Negative correlation between power-law scaling and Hurst exponents in long-range connective sandpile models and real seismicity
نویسندگان
چکیده
0960-0779/$ see front matter 2011 Elsevier Ltd doi:10.1016/j.chaos.2011.10.009 ⇑ Corresponding author. Tel.: +886 3 422 7151 65 2044. E-mail address: [email protected] (C.-c. C We propose a generic negative correlation between power-law scaling and Hurst exponents for size/magnitude data from real and synthetic earthquakes. The synthetic earthquakes were produced from a conceptual earthquake model, the long-range connective sandpile (LRCS) model. The LRCS model is a new modification of sandpile models that considers the random distant connection between two separated cells instead of neighboring cells. We calculated the Hurst exponent H and the power-law scaling exponent B for event size data in the LRCS model. We systematically explored the relationships between these two exponents (H and B) and conclusively obtained a negative correlation between H and B. We also found this negative correlation for real earthquake data registered in the Taiwan Central Weather Bureau (CWB) catalog. This negative correlation has not been demonstrated previously for real seismicity, although it has been frequently suggested. 2011 Elsevier Ltd. All rights reserved.
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