A seismogenic zoning for north Algeria is proposed. The characteristics of each zone are studied in detail and different statistical analyses are performed in order to assess the slope of the Gutenberg-Richter relationship, the mean annual activity rate of earthquakes, the average return period, the probability of non-exceedence during a time period and the maximum expected magnitude. The slope of the Gutenberg-Richter relationship determined by traditional methods, physical strain energy release and corresponding magnitude, together with a new approach based on both historical and instrumental data, are used to estimate the seismic hazard parameters.The seismic hazard parameters obtained described well the characteristics of each proposed seismogenic zone. The b-value of the Gutenberg-Richter relationship concurs especially well with the most common seismotectonic interpretation of each zone, for example 0.70 9 0.06 at El Asnam region and 0.639 0.09 around Algiers. The average return period obtained (approximately 300 years for magnitude 7.5 at El Asnam region, exceeding 1000 years in other regions), corroborate those obtained through Paleoseismic studies and others using a digital elevation model.
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