Landslide Hazard Analysis Based on Geomorphological Approach in Karo Highland, North Sumatra Province, Indonesia

摘要

The research is conducted in Karo District, North Sumatra Province, Indonesia. Landslides often occur in the research area. The research objectives are to analyze landslide hazard based on geomorphological approach and to illustrate the distribution of landslide hazard. The landslide hazard was analyzed based on geomorphological approach. The factors causing landslide can be determined by geomorphological approach. The techniques of Geographic Information System (GIS) and remote sensing were applied to analyze the distribution of landslide hazard. The results showed that the factors causing landslide in the research area are geomorphological characteristics such as slope and landform. Additionally, the distribution of landslide hazard is variety. The landslide hazard can be divided into 5 classes, i.e. very low, low, moderate, high, and very high. The 19% of research area is safe from landslide hazard while 81% of research area is potential to occur landslides. Consequently, the research area is prone to landslide.