Fig. 7From: Effects of random 3D upper crustal heterogeneity on long-period (≥ 1 s) ground-motion simulationsDistribution of natural logarithm of heterogeneous-to-homogeneous PGV ratio. Correlation lengths of 1, 3, and 5 km for source models a S1_3.3, b S1_0.5, and c S2_3.3. Standard deviation is indicated on the right top of each panelBack to article page