Table 1 Crustal structure of Longmenshan region. Qa and Qb are the P-wave and S-wave attenuation Q value.
Thickness (km) | V s (km/s) | V p (km/s) | Density (g/cm3) | Q a | Q b |
|---|---|---|---|---|---|
1.0 | 1.2 | 2.5 | 2.1 | 800 | 400 |
1.0 | 2.1 | 4.0 | 2.4 | 800 | 600 |
20.0 | 3.5 | 6.1 | 2.75 | 1000 | 600 |
20.0 | 3.6 | 6.3 | 2.8 | 800 | 500 |
4.0 | 4.0 | 7.2 | 3.1 | 1000 | 600 |
— | 4.48 | 8.04 | 3.32 | 972 | 404 |