Smoothed seismicity model

The smoothed seismicity model is based on a uniform seismicity catalog that is used to assess the location and rate of future earthquakes. This catalog is declustered by removing foreshocks and aftershocks so that only independent events are considered, as required in the probabilistic probabilistic methodolgy used to assess seismic hazard. Future seismicity rates are estimated by counting historical earthquakes in a grid with a cell dimension of 0.1 degrees in latitude and longitude. These gridded earthquake rates are smoothed using a 50 kilometer fixed length smoothing kernel. Separate rate models were developed for the craton and active tectonic regions for earthquake depths between 0 and 50 km. Gridded rates for earthquakes [...]