By statistical analyses the dependence of North America intraplate seismicity with Bouger and isostatic gravity anomalies was established. As input data a seismic data base of National Earthquake Information Center USA (NEIC) and digital map of gravity field with mesh point 1 degree was used. The analysis of intraplate seismicity done for North America, allows to make a conclusion, that earthquake hypocenters are associated mainly with crustal blocks, characterized by negative Bouger and by positive isostatic gravity anomalies.


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