Earthquake Ground Motion Modelling
1. Input Parameters:
| a. Moment Magnitude (Mw): | |
| b. Rupture Radius, Rrup (km): | |
| c. Average Seismic Shearwave Velocity at 30 m Depth (Vs30) in m/s: |
2. Peak Ground Responses: PGA, PGV, and MMI
The peak ground acceleration (PGA), peak ground velocity (PGV), and modified Mercalli intensity (MMI) result for the defined earthquake moment magnitude (Mw) are shown in table and figures below.
3. Response Spectrum
The peak ground acceleration (PGA), peak ground velocity (PGV), and modified Mercalli intensity (MMI) result for the defined earthquake moment magnitude (Mw) are shown in table and figures below.
Table I. PGA, PGV, and MMI result for the defined rupture radius.
| Mw | Rrup (km) | PGA (g) | PGV (cm/sec) | MMI |
The response spectral acceleration (RSA), response spectral velocity (RSV), and response spectral displacement (RSD) for the defined earthquake moment magnitude (Mw) and rupture radius (Rrup) are shown in figures and table below. The mean values are the arthematic mean of the five models used for the ground motion modelling.
Table II. Values (mean of the five model) of RSA, RSV, and RSD.
| Time (s) | RSA (g) | RSV (cm/s) | RSD (mm) |
| SGC09 | ASK14 | CY14 | A12 | Mean | |||||||||||
| Rrup (km) | PGA (g) | PGV (cm/sec) | MMI | PGA (g) | PGV (cm/sec) | MMI | PGA (g) | PGV (cm/sec) | MMI | PGA (g) | PGV (cm/sec) | MMI | PGA (g) | PGV (cm/sec) | MMI |
1. Abrahamson, N. A., Silva, W. J., & Kamai, R. (2014). Summary of the ASK14 ground motion relation for active crustal regions. Earthquake Spectra, 30(3), 1025-1055.
2.Tang, Y., Lam, N., Tsang, H. H., & Lumantarna, E. (2020). An adaptive ground motion prediction equation for use in low-to-moderate seismicity regions. Journal of Earthquake Engineering, 1-32.
3.Chiou, B. S. J., & Youngs, R. R. (2014). Update of the Chiou and Youngs NGA model for the average horizontal component of peak ground motion and response spectra. Earthquake Spectra, 30(3), 1117-1153.
4.Allen, T. I. (2012). Stochastic ground-motion prediction equations for southeastern Australian earthquakes using updated source and attenuation parameters. Geoscience Australia Record, 69, 55.
5.Somerville, P., Graves, R., Collins, N., Song, S. G., Ni, S., & Cummins, P. (2009, December). Source and ground motion models for Australian earthquakes. In Proc. 2009 Annual Conference of the Australian Earthquake Engineering Society (pp. 11-13).