Forum Geografi
Vol 33, No 1 (2019): July 2019

Evidence Based Landslide Hazard Mapping in Purworejo using Information Value Model Approach

Sudaryatno Sudaryatno (Fakultas Geografi, Universitas Gadjah Mada)
Prima Widayani (Fakultas Geografi, Universitas Gadjah Mada)
Totok Wahyu Wibowo (Fakultas Geografi, Universitas Gadjah Mada)
Bagus Wiratmoko (Fakultas Geografi, Universitas Gadjah Mada)
Wahyu Nurbandi (Fakultas Geografi, Universitas Gadjah Mada)



Article Info

Publish Date
01 Aug 2019

Abstract

Purworejo District, which is located in Central Java, Indonesia, is prone to landslides. These are a natural hazard that often occur in mountainous areas, so landslide hazard analysis is needed to develop mitigation strategies. This paper elaborates on the use of an evidence-based statistical approach using the Information Value Model (IVM) to conduct landslide hazard mapping. The parameters of slope, aspect, elevation, rainfall, NDVI, distance from rivers, distance from the road network, and distance from faults were employed for the analysis, which was conducted based on a raster data environment, since the pixel is the most appropriate means to represent continuous data. Landslide evidence data were collected by combining secondary data and interpreting satellite imagery to identify old landslides. The IVM was successfully calculated by combining factors related to disposition to landslides and data on 19 landslide occurrences. The results helped produce a landslide susceptibility map for the northern and eastern parts of Purworejo District.

Copyrights © 2019






Journal Info

Abbrev

FG

Publisher

Subject

Earth & Planetary Sciences

Description

Forum Geografi, Indonesian Journal of Spatial and Regional Analysis (For. Geo) is an open access, peer-reviewed journal that will consider any original scientific article for expanding the field of geography. The journal publishes articles in both physical and human geography specialties of interest ...