| Abstrak/Abstract |
Landslide susceptibility maps are crucial in disaster risk management, and they can be used for regional development plans. Landslide susceptibility maps can be made by analyzing parameters that are assumed to affect landslides such as gradient slopes, geology, soil, and climate. Selection of landslide controlling parameters influences the accuracy of landslide susceptibility map. This study evaluates the effect of parameter that’s rarely used, which is groundwater. The study area of this research was Kalibawang and Samigaluh Subdistricts, Kulonprogo, Special Region of Yogyakarta, Indonesia. Frequency ratio was used for the method along other parameters which is slope gradient, lithology, lineament density, land use, soil thickness. The result shows that groundwater parameter increased the accuracy by 22.29%. This study suggests that groundwater should be highly considered in landslide susceptibility mapping. In the other hand, roundwater
depth mapping remains a challenge because most remote sensing methods only detect shallow groundwater. Further research is necessary to develop better methods for groundwater
mapping using remote sensing or other indirect methods. |
