"Scientific" Improvements
| Functionality | To be included in this version | Might be included | Not this version | ||||
|---|---|---|---|---|---|---|---|
| Velocity Model | |||||||
| Basin Modeling | Add high priority basins | ||||||
| VM | DEM | size extent increase + off-shore basin | |||||
| VM | VM Size decreased based on depth of rupture - sim duration changed to account for surface arrival times | ||||||
| Tectonics | |||||||
| Subduction | VMs with 3 cm/s PGV threshold. | ||||||
| Simulation Method | |||||||
| SRFgen improvements for shallow crustal earthquakes from validation | Prelim validation needs to be done | ||||||
| LF | |||||||
| 200m simulation realisations | For all faults | ||||||
| HF | |||||||
| Using Target dx/dy (stoch file more aligned with srf) | for single segment ruptures | ||||||
| HF Scaling | HF DT decrease – using 0.01 for HF-DT, 0.005 for BB-DT | Scale stoch dx/dy down with area of fault. (when reach X number of subfaults double the dx/dy value) | |||||
| Sim methodology improvements | Using gmsim_v20.4.1 | ||||||
| Stations | |||||||
| Additional Realisation Parameters (e.g. Magnitude) | New Non-uniform Grid | Update in Christchurch / Wellington Region Finer Grid Real station update Only land stations in all versions of the grid (ref: Notes on lat,lon <-> x,y conversion) Similar number of stations | |||||
| Vs30 | |||||||
| vs30 improvementsSim methodology improvements | Using geology only. Modified coastal areas with a distance to coast factor. | ||||||
| Realisations | |||||||
| Additional Realisation Parameters (e.g. Magnitude) | Mw - Stress drop perturbation based on Leonard sigma and correlated together slip/rake/rise time perturbations come from the seed we pass to genslip Shypo / Dhypo unchanged from last version | ||||||
| Change SRF slip seed generation | Randomised rather than same sequence | ||||||
| Fault Sources | |||||||
| ERF | Create custom ERF for cybershake run | ||||||
| Fault size rounding | Nearest 0.5k / 0.1k | Using Target dx/dy | for single segment ruptures | Change SRF slip seed generation||||