From: Application of a simplified calculation for full-wave microtremor H/V spectral ratio based on the diffuse field approximation to identify underground velocity structures
Layer
V s
Depth
1
V s1 = 100 m/s
10 m(= λ 0/4)
2
V s2 = 3V s1
400 m(= 10λ 0)
Cap
1.2V s2
1.5V s2
4.5V s2
∞