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This paper presents a tool for studying a seismic, volcanic and impact natural disasters [1-3] of GIS-ENDDB (the “Earth's natural disasters Databases”) [4]. The algorithms implemented in GIS-ENDDB allow visualizing a selected part of a current catalog of events in a pseudo-3D background map, to plot frequency dependences of magnitudes or sizes (crater diameters) and other parameters relationships of events from various samples. This high-tech expert system allows solving a wide range of seismological and geodynamic research tasks updated by including successively various mathematical methods for natural disasters data processing, characteristics of seismogeodynamic regime (b, A, EO, KAVG), and advanced representation tools. The paper shows examples of mapping these characteristics and studying their anomalies (slope of magnitude-recurrence curves, seismic quiescence, energy stability) and of revealing the grouping events (aftershocks, clusters, etc.). The detailed study on seismogeodynamic regime of the linear and ring structures revealed by seismic grouping methods and in the anomalies of geophysical fields can give a lot of prognostic information to seismologists
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