From: Kinematic source models for long-period ground motion simulations of megathrust earthquakes: validation against ground motion data for the 2003 Tokachi-oki earthquake
Layer
V P (m/s)
V S (m/s)
\(\rho\) (kg/m3)
Q
1
1800
500
1900
100
2
2100
700
2000
250
3
2500
1100
2200
1000
4
3300
1700
2300
5
4000
2450
6a
6000–8200
3550–4630