Evidence Based Landslide Hazard Mapping in Purworejo using Information Value Model Approach
| Autor: | Wahyu Nurbandi, Sudaryatno Sudaryatno, Totok Wahyu Wibowo, Prima Widayani, Bagus Wiratmoko |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
010504 meteorology & atmospheric sciences
landslide hazard information value model Elevation lcsh:G1-922 Landslide Hazard analysis 010502 geochemistry & geophysics 01 natural sciences Hazard Normalized Difference Vegetation Index Raster data Natural hazard Satellite imagery Cartography Geology lcsh:Geography (General) 0105 earth and related environmental sciences |
| Zdroj: | Forum Geografi, Vol 33, Iss 1, Pp 25-38 (2019) |
| ISSN: | 2460-3945 0852-0682 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|