Development of Landslide Hazard Assessment Using Geographical Information System (GIS) and Remote Sensing Application

The purpose of this study is to generate and evaluate the landslide hazard map for Gua
Tempurnng area using Geographical Information System (GIS) and remote sensing
techniques. GIS mapping is generated and integrated with landslide potential database in
order to construct landslide hazard map. Landslide locations were identified in the study
area from imagery and aerial photograph interpretations followed by field surveys. The
topographic and geologic data were collected, processed and created into a spatial database
using GIS and image processing. Factors that influence landslide occurrence at the study
area was identified and analyzed based on literature review, landslide history and field
observation. Data acquisition for factors such as slope gradient, slope aspect, slope
curvature, river and landuse were retrieved from topographic database. Data acquisition for
rainfall intensity vegetation coverage, mineralogy and lineament were retrieved from
remote sensing database. The image processing task will be performed using Adobe
Photoshop while the analysis and map generation process will be carried out using ArcGIS
and ERDAS Imagine software
This project is vitally required in order to avoid any possible landslide occurrence and to
determine the safety level for any development along the terrain slope. Landslides
embodied one of the major geological hazards that cause losses in lives and property. The
natural condition of the hilly side such as steep slope, poor consolidated loose soil and
water movement have tremendously induce landslide occurrence. Its occurrence can be
triggered and accelerated by human activities such as land development and deforestation.
In recent days, the increasing development of recreational and residential area along the
slope terrain and continuous development at hilly side have increase the unstable soil
condition. along the hill slope. This phenomenon will increase the potential of slope failure
that can cause major disaster in expense of life and property losses. This project can
identified potential landslide areas thus prevent any insignificant land development,
accident and negative consequences at the study area.