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We inquire the statistical nature and dynamics of shallow and deepseismogenesis along major plate margins of the NW Circum-Pacific Belt, byexamining whether earthquakes are generated by Poisson processes and areindependent (uncorrelated), or by Complex processes and are dependent(correlated). Analysis is based of Non Extensive Statistical Physics and thecomplete and homogeneous catalogue of the Japan Meteorological Agency for theperiod 2002-2016.5. Emphasis is given to background seismicity recovered byremoving aftershocks with stochastic declustering. Long-term correlation andlong-range interaction is mostly weak to moderate in shallow backgroundseismicity. Conversely, deep seismicity is mostly uncorrelated(quasi-Poissonian), particularly in Wadati-Benioff zones. As function of time,shallow background seismicity exhibits persistent weak to moderate correlation;sub-crustal background seismicity is generally quasi-Poissonian but maydynamically transition to moderate-significant in association with temporalclusters of large earthquakes. A universal such effect was observed ahead ofthe 2011.19 Tohoku mega-earthquake. These results contrast observations alongthe Pacific-North American transformational plate boundaries of California andAlaska which are generally correlated, suggesting that the geodynamic settingis essential in the development of self-organization and Complexity. Moreover,observations appear consistent with simulations of small-world fault networksin which free boundary conditions at the surface allow for Complexity todevelop, while fixed boundary conditions at depth do not.

On the Statistical Nature and Dynamics of Seismogenesis in the NW Circum-Pacific Belt: A Study Based on Non-Extensive Statistical Physics