| dc.description.abstract | Landslides are the disasters that frequently happen in the
Bluncong sub-watershed. These incidents have caused damage
and malfunction of road infrastructure, bridges, and
irrigation buildings. Therefore, it is important to anticipate
landslides through the mapping of landslide-susceptibility
areas. This study aims to map landslide susceptibility at
Bluncong sub watershed, Bondowoso, by using a Geographical
Information System and remote sensing. The landslide
susceptibility analysis and mapping are conducted based on
landslide occurrences with the Frequency Ratio approach. The
landslide sites are identified from field survey data interpretation.
Digital Elevation Model maps, geological data, land uses and
rivers data, and Landsat 8 images are collected, processed, and
then built into the GIS platform's spatial database. The selected
factors that cause landslide occurrences are land use, distance to
the river, aspect, slope, elevation, curvature, and the vegetation
index (NDVI). The results show that the accuracy of the map is
acceptable. The frequency ratio model gained the area under
curve (AUC) value of 0.79. It is found that 9.08% of the area has
very high landslide susceptibility. Local governments can use this
study's mapping results to minimize the risk at landslidesusceptible
zones. | en_US |
