Zoning landslide vulnerable area according to geological structure, slopes, and landuse parameters in Trangkil Sukorejo Gunungpati Semarang City's Residental Area

Abstract

The condition of the geological structure, land use, and slope in Trangkil Sukorejo Gunungpati Semarang City's residential area can influence the occurrence of the landslide. In this study zoning is conducted to identifying the landslide vulnerable area and based on three main parameters that affect the occurrence of land movement, i.e., Geological Structure (A), Slope (B), and land use (C) according to weighted formula H (Weight) = ((0,24xA) + (0,38xB) + (0,38xC)). The result indicates that the southern part of the settlement is relatively safe than the northern part where the landslide vulnerability point is located, there is a fracture that can trigger the water entry through the weathered breccia.