First of all, I have to say that there is no specific model or application to identify risk or probability the earthquake proven landslide in Turkey, as far as I know. Even there is a formulation in literature, the usage is very limited. Moreover, landslide susceptibility map give no information about the timing and magnitude of the predicted landslide (Einstein, 1988; Guzetti et al., 1999; Carrara et al., 1995; Van Den Eeckhaut et al., 2006).
Landslide susceptibility= f (predisposing factors)
Landslide possibility= f (landslide susceptibility + triggering factors)
Landslide Hazard = f (landslide possibility + Damageable objects)
The calculation of risk for the landslides (without an earthquake) has been applied by using many geological parameters, some social and economic criteria in some countries; we just started such applications. This process is very long and needs a number data belonging to your study area. Briefly, I categorized and listed them below;
-Locations of previous landslides (as point or area)
-Geological map the area
-Digital Elevation model of the area
By using these titles that consists sub-titles, GIS programs could perform some processes;
-Slope amount map,
-Slope aspect map,
-Dissolved lithology map,
By means of model builder in any GIS software, after a complicated steps, gradations, and classifications, you can obtain landslide susceptibility map.
I am not expert in landslide applications. I hope that I can help.
For any further question, I am here for 4 days.