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Table 1 Attenuation relationship components (Zare et al., 1999)

From: Determination of emergency roads to emergency accommodation using loss analysis results

Region A B C1 C2 C3 C4 Σ
Central Iran – Alborz (Vertical Component) 0.322 −0.0003 −0.828 − 0.754 −0.971 − 0.788 0.352
Central Iran – Alborz (Horizontal Component) 0.322 −0.0004 −0.688 − 0.458 −0.72 − 0.585 0.394
Zagros (Vertical Component) 0.406 −0.0038 −1.262 −1.333 − 1.23 −1.777 0.356
Zagros (Horizontal Component) 0.339 −0.0019 −1.047 −1.065 − 1.02 − 0.975 0.329
Iran (Vertical Component) 0.362 −0.0002 −1.124 −1.15 − 1.139 −1.064 0.336
Iran (Horizontal Component) 0.36 −0.0003 −0.916 − 0.852 −0.9 − 0.859 0.333
  1. Considering the conducted studies, the site of the studied region is in hard alluvium category. Hence, S2 = 1, and S1, S3, and S4 are equal to zero