Abstract: Addressing the large errors in the results of current seismic mortality assessment models in specific regions, the region of Chinese mainland has been zoned as three regions based on seismic hazard characteristics and population distribution, which are northwest region, southwest region as well as eastern region, each region is graded according to population density. The parameters of intensity at the epicenter, seismic area, and seismic fortification intensity were selected, and the multiple non-linear regression method was used to establish a regional model for earthquake mortality assessment. The results show that the models have good validation results in northwest and southwest regions, and could be used for rapid post-earthquake blind assessment. To a certain extent, it can avoid the situation that the evaluation results are the same when calculating earthquakes with different magnitudes, the same epicenter intensity and population density. Although the model needs to be further improved in the eastern part of the country, where there are fewer earthquakes, and in urban direct-downfall earthquakes, it provides ideas for solving the problem of large errors in the assessment of earthquake mortality in specific regions, and can provide data reference for post-earthquake emergency command and rescue.

Key words: Seismic hazards, Human mortality assessment model, Sub-region, Population density rating