Characteristic variation of local scaling property before Puer M6.4 earthquake in China: The presence of a new pattern of nonlinear behavior of seismicity
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- Li, Q. & Xu, GM. Izv., Phys. Solid Earth (2012) 48: 155. doi:10.1134/S1069351312010107
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We observed a new pattern of nonlinear behavior of seismicity. We studied the scaling property of the interevent time series of the seismic sequence for Puer area in China by using the methods of the local scaling property, the generalized dimension spectrum, and the correlation dimension. It is indicated that there are clear characteristic variations of local scaling property and generalized dimension spectrum prior to Puer M6.4 earthquake while there is no characteristic variation of the correlation dimension. This result suggests that the choice of suitable methods is needed for the purpose of getting valuable information about the scale invariance in application of the three methodologies. The major difference between the characteristic variation of local scaling property and the other patterns of nonlinear behavior of seismicity such as the variations of the generalized dimension spectrum and fractal dimension of seismicity before large earthquakes is in the description of scaling property: the generalized dimension spectrum and fractal dimension focus on the global description of the scaling properties, while the local scaling property emphasis the local features. Therefore, the characteristic variation of local scaling property before Puer M6.4 earthquake presents a new pattern of nonlinear behavior of seismicity.