The North Anatolian fault (NAF), located in northern Turkey and California's San Andreas fault (SAF) show remarkable similarities. A random field model, developed by the authors (Akkaya & Yucemen 1996) is utilized to compare the seismicity characteristics of the two faults on a statistical basis. The seismic hazard model is based on the level-crossing theory of random fields and considers the space-time correlations simultaneously and explicitly through the use of spatial and temporal scales of fluctuation. The comparison between the two faults is carried out with respect to the level of seismic hazard and the space-time correlation structure. In this comparison, the most active portions of the NAF and the SAF are considered.