From: Microtremor array surveys and development of the velocity model in the Hakodate Plain, Hokkaido, Japan
Layer no.
P-wave velocity
(km/s)
S-wave velocity
Density
(g/cm.3)
1
2.0
0.6
1.90
2
2.5
1.1
2.15
3
3.0
1.4
2.25
4
3.5
1.7
2.30
5
4.0
2.1
2.40
6
5.0
2.7
2.50
7
5.5
3.1
2.60
8
5.7
3.3
2.70
9
6.0
3.4
2.75