SUSCEPTIBILITY ANALYSIS OF LANDSLIDE USING THE WEIGHT OFEVIDENCE (WOE) METHOD IN NORTH BANDUNG AREA AND ITSSURROUNDINGS, WEST JAVA

• Main Author: Giovanny Rea, Ary
• Format: Final Project
• Language: Indonesia
• Subjects: Geologi, hidrologi & meteorologi
• Online Access: https://digilib.itb.ac.id/gdl/view/69761
• Institution: Institut Teknologi Bandung

The North Bandung area (KBU) is an area consisting of the City of Bandung, part of West Bandung Regency, and part of Cimahi City. KBUs representing several districts and cities certainly have civilian activities, and landslides events can interfere with residents' activities. By knowing the dangers of soil movement in the North Bandung area, a vulnerability hazard analysis using rainfall will be useful to describe the condition of the area around the North Bandung area before the ground movement caused by tectonism occurs. The identification of ground motion is the most effective and economical way to provide data in spatial planning, land use, and mitigation. Location of the research area is at longitudes 107°27'30"E - 107°46'15"E and latitude 6°44'31"S - 6°55'43"S. This study uses parameters whose model is validated by the AUC (Area Under the Curved) graph. The points used as an inventory of landslide are 115 points, with a training dataset of 81 points and a test dataset of 34 points. The parameters used include the direction of the slope with AUC of 0.71, flow direction with AUC of 0.67, rainfall with AUC of 0.68, distance from lineament with AUC of 0.81, slope with AUC of 0.79, lithology with AUC of 0.70, elevation with AUC of 0.60, NDVI with AUC of 0.72, stream density with AUC of 0.63, distance from road with AUC of 0.57, stream distance with AUC of 0.66, and land cover with AUC 0.76. The results of this study are areas prone to landslides have been described by the Soil Vulnerability Zoning Map with Very Low Zone covering 68% of the research area, Low Zone covering 15% of the research area, Medium Zone covering 9% of the study area, and High Zone covering 8% of the research area. study. Peak Ground Acceleration (PGA) is divided into 8 classes with a range of 0.25 to 0.45, with the percentage of landslide susceptibility zoning due to rainfall having a decrease in the very low landslide vulnerability zoning, and an increase in the high, medium, and low landslide susceptibility zoning.