Hazard Analysis

Grouping of landslide-prone areas is done by using Geographical Information System (GIS) program. The analysis includes landslide, slope, lithology and groundwater flow data using Cummulative Rainfall Departure (CRD) as a factor that encourages change.
In the analyst’s point of view each of these factors has different weights or effects and the landslide disaster analysis in the lower regions is eliminated.
The data to be modeled and analyzed were obtained from the IPCC with basic projections (1980-2017), projections I (2018-2023) and projection II (2024-2030), as one of the factors driving environmental changes to disaster hazard maps for landslides. The frequency of rainfall, the occurrence and a lot of rain water is different in each season.
In Indonesia there are 2 seasons, the rainy season usually occurs in October-May. And the dry season occurs in April-October. Each season has different rainfall characteristics. It causes different impacts on the impacts that can trigger the occurrence of landslides. However, if it is linked to climate change then the impact can be attributed to changes in rainfall. Therefore, landslide hazard modeling can be used as a reference for landslide projections that occur in the future by analyzing rainfall scenarios occurring on a monthly basis for future projection.