Abstract implementation of the shallow crustal, upper mantle, subduction
interface, and subduction slab ground motion models by Zhao et al. (2016).
Implementation notes:
- All models supply site-class specific sigma, however, only the total
sigma is used here as reported in the various coefficient tables.
- All models currently ignore volcanic path terms.
- The interface model handles shallow,
zHyp ≤ 25 km, and deep,
zHyp > 25 km, events differently.
- THe site amplification term is handled via interpolation of terms
computed for discrete Vs30 values that correspond to the Zhao site classes:
I, II, III, and IV.
References:
- Zhao, J.X., Liang, X., Jiang, F., Xing, H., Zhu, M., Hou, R., Zhang, Y.,
Lan, X., Rhoades, D.A., Irikura, K., Fukushima, Y., and Somerville, P.G.,
2016, Ground-motion prediction equations for subduction interface earthquakes
in Japan using site class and simple geometric attenuation functions:
Bulletin of the Seismological Society of America, v. 106, p.
1518-1534.doi: 10.1785/0120150034
- Zhao, J.X., Jiang, F., Shi, P., Xing, H., Huang, H., Hou, R., Zhang, Y.,
Yu, P., Lan, X., Rhoades, D.A., Somerville, P.G., Irikura, K., and Fukushima,
Y., 2016, Ground-motion prediction equations for subduction slab earthquakes
in Japan using site class and simple geometric attenuation functions:
Bulletin of the Seismological Society of America, v. 106, p.
1535-1551.doi: 10.1785/0120150056
- Zhao, J.X., Zhou, S.L., Gao, P.J., Zhang, Y.B., Zhou, J., Lu, M., and
Rhoades, D.A., 2016, Ground-motion prediction equations for shallow crustal
and upper mantle earthquakes in Japan using site class and simple geometric
attenuation functions: Bulletin of the Seismological Society of America, v.
106, p. 1552-1569.doi: 10.1785/0120150063
Component: geometric mean of two randomly oriented horizontal
components