Multidimensional wavelet analysis of seismicity

A method of joint analysis of seismic regimes is proposed for recognizing c ollective behavior phenomena of seismicity in a group of areas that form a large seismically active region. The method is based on the multidimensiona l wavelet analysis of square root values of earthquake energies released in each of the areas (the so-called cumulative Benioff curves proportional to the value of elastic stresses accumulated and released in an earthquake so urce). This method is a further development of the method of wavelet-aggreg ated signals previously proposed by the author to analyze multidimensional time series of geophysical monitoring. An application of this method is exe mplified by the detection of collective seismic phenomena in Japan and in t he Kuril Islands in the time period from 1950 to 1995.