GIS-Based Landslide Disaster Risk Areas and Ground Movements Mapping to Support Disaster Mitigation Activities (Case Study: Tasikmalaya Regency)

Novi Asniar,Anri Noor Annisa Ramadan,Aso Sudiarjo

doi:10.33479/jacips.2021.1.2.40-53

Novi Asniar, Anri Noor Annisa Ramadan + Show 1 more

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https://doi.org/10.33479/jacips.2021.1.2.40-53

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Abstract

Tasikmalaya Regency is an area that is prone to landslides and ground movements. The availability of comprehensive and accurate information in controlling land use for regional development in areas prone to landslides and ground movements is very important for casualty prevention and other losses such as physical, social and economic. This information must be disseminated to the public as an early warning system to support disaster mitigation efforts. Identification of the characteristics of landslide and ground movement prone areas requires the mapping of risk areas to mitigate disasters. This can be done using Geographic Information System (GIS). This mapping activity was carried out using the method of collecting digital data from five vulnerability controlling factors of landslides and ground movements, namely rainfall, rock type, soil type, land cover and slope. The analysis is continued by weighting the factors that influence landslides and ground motion and then overlaying the five controlling factor maps (with their respective weight values) to produce a landslides and ground movement vulnerability level map which is then inputted into WebGIS. This map can then be used by local governments and the public as an information medium to support disaster mitigation activities.

Highlights

Landslides and ground movements can cause significant repercussions such as damage and loss
The availability of comprehensive and accurate information in controlling land use for regional development in areas prone to landslides and ground movements is very important for casualty prevention and other losses such as physical, social and economic
Mapping of Landslide-prone Areas The Making of landslide-prone area maps is based on secondary data such as rainfall maps, geological maps, slope maps, soil type maps, land cover maps and data on landslides and ground movement events that have occurred in Tasikmalaya Regency between 2013 2020

Summary

Introduction

Landslides and ground movements can cause significant repercussions such as damage and loss. The availability of comprehensive and accurate information in controlling land use for regional development in areas prone to landslides and ground movements is very important for casualty prevention and other losses such as physical, social and economic. Such information should be disseminated to the public as an early warning system. In some areas with high population density and pre-existing early warning systems, such information is not distributed evenly, leading to the possibility for differing perceptions This may cause panic and chaos and in effect, greater loss of both property and life (Noor, 2014)

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