Hazards values quoted are for PGA at the 500 year return period. Figures 3 - 6 show model results for PGA at 500 year return periods.
Figure 6 shows the VEHM, interpolated on a 0.05 degree grid. For most areas of the map the Final model is similar to the ‘reference model’ (area source zones only). Calculated PGA values have a strong peak in southwest Gippsland, driven by a history of high seismicity as well as the presence of a number of documented “active” faults. PGA values are generally higher in the east of the state. The peak PGA for the Final model is 0.23 g in southwest Gippsland. A number of the included active faults have a significant influence on the hazard map, the most significant being the Cadell Fault near Echuca in the central north of the map. The Melbourne CBD has a 500 year PGA value of 0.08 g. slightly less than the Aus5 model (0.09 g).