Relationship between the characteristc variations of local scaling property and the process of seismogeny: The revelation of a new physical mechanism of seismicity

摘要

In order to make certain of the nonlinear characteristics of the process of seismogeny, the characteristics of local scaling property of the interevent time series of the seismic sequences for Longmen mountain earthquake zone and Luquan area in China were studied by using the method of local scaling property wavelet analysis. It is indicated that there are clear characteristic variations of local scaling property prior to main shocks for the original series while there is no characteristic variation for the two randomly shuffled versions of the original series. The conclusions drawn are as follows: (1) there is a relationship between the characteristic variations of the local scaling property and the process of seismogeny; (2) this relationship reveals a mechanism of complex behavior in a nonlinear seismic system; and (3) the characteristic variations of the local scaling property can be taken as indicators of augmented or reduced stability of a seismic system.