Abstract
This research presents the results of a landslide susceptibility mapping using Geographic Information Systems (GIS) based statistical namely Spatial Multi-Criteria Evaluation (SMCE) in Camba Sub-district, Maros Regency, South Sulawesi. Ten physical factors encompassed soil type, slope, slope aspect, rock type, altitude, land cover, distance from the river, rainfall, distance from faults, and distance from the road that collected from several sources and used to determined landslide susceptible areas. SMCE was applied to classify the degree of landslide susceptibility from low to very high classes. Validation using 30 points of landslide events obtained from field survey. The result showed an area with high and very high classes has an area 2079 ha (18,3 %) and 52,5 ha (0,46 %) distributed in the southern region. The results of validation using the R-index for very high and high classes is 55% and ROC shows that of 96.4%, for the P show method of 98%. This landslide mapping can be used for disaster mitigation and disaster preparedness planning purposes.
Highlights
Landslides are the slope-forming materials displacement in the form of rubble, soil, rock, or mixed materials, moving down or out from the slope [1]
This research presents the results of a landslide susceptibility mapping using Geographic Information Systems (GIS) based statistical namely Spatial Multi-Criteria Evaluation (SMCE) in Camba Sub-district, Maros Regency, South Sulawesi
The process carried out in ILWIS is to assign values to each parameter in the range 0 – 1, a value of 0 for factors in each parameter that have no effect for landslides event and a value of 1 for factors in each parameter that greatly affect the occurrence of landslides
Summary
Landslides are the slope-forming materials displacement in the form of rubble, soil, rock, or mixed materials, moving down or out from the slope [1]. Assessment of landslide hazard can be achieved by provide information about landslide events which is accurate to risk managers [3]. Good landslide susceptibility maps are important because that can provide knowledge and information for various groups from the private sector, society, government as well as academia [4]. Landslide susceptibility map contains information about areas that are susceptible to landslides by trying to overlay several physical factors that have triggered to landslides in the past [6, 7]. Mapping landslide susceptibility in an area is very important to assess potential risks of landslide that is useful for disaster preparedness planning or mitigation, as a reference for planning land use, and can be used for planning infrastructure such as choosing the most suitable location for building and road construction [8]
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