Table 2.
List of independent variables as studied in Tanyas et al.7 and adopted here. We mentioned the GRASS GIS modules used to calculate each variable at grid cell level, from which mean and S.D were subsequently obtained at SU level.
| Type | Independent variables | GRASS GIS module, or reference |
|---|---|---|
| Dynamic | PGA | USGS41 |
| Dynamic | PGV | USGS41 |
| Dynamic | MMI | USGS41 |
| Static | Slope | r.slope.aspect |
| Static | Topographic Wetness Index (TWI) | r.topidx51 |
| Static | Vector ruggedness measure (VRM) | r.vector.ruggedness52 |
| Static | Local relief | r.neighbors50 |
| Static | Landform classes | r.geomorphon50 |
| Static | Plan curvature (PlanC) | r.slope.aspect |
| Static | Profile curvature (ProfC) | r.slope.aspect |