Mapping of landslide hazards prediction using geographic information system in Solok District

Abdurrohim Abdurrohim,Hidayat Firman,R Haigh,F.A Ismail,L Comfort,A Hakam

doi:10.1051/matecconf/201822904003

Abstract

Solok District is one of the areas prone to the landslide in West Sumatera Province. Generally, landslides are caused by natural and human factors. The aims of this study are to predict the location of the highest landslide hazard distribution in Solok District and to know the level of vulnerability of landslide hazards in Solok District. This study consists of preparatory steps, field survey, analysis and processing of the data based on 4 types of maps, i.e. rainfall, soil type, geological, and slope maps. These maps then scoring in 5 types of vulnerability levels. As the results of this study, it is known that the sub-districts are on the highest prediction of the landslide are Pantai Cermin, Lembah Gumanti, Hiliran Gumanti, Lake Kembar, Mount Talang, Payung Sekaki, Tigo Lurah, Bukit Sundi, Kubung, X Koto Singkarak and Junjung Sirih. The level of vulnerability prediction of landslide hazard in Solok District is divided into 5 levels, which is very low 44511,71 Ha with percentage of 11,91%, low of 69179,34 Ha with percentage 18,51%, while 89894.35 Ha with the percentage of 24.05%, height of 86307 Ha with the percentage of 23.09%, and very high 83907,60 Ha with the percentage of 22.45.

Highlights

Natural disasters may be happened anytime and anywhere, which causes material and immaterial losses in people's lives
The parameters used in this study are the slope of the land, the intensity of the rainfall, geological and soil types
The prediction of the landslide locations was defined based on vulnerability prediction rate of the landslide hazard

Summary

Introduction

Natural disasters may be happened anytime and anywhere, which causes material and immaterial losses in people's lives. The landslides are one of the most common natural disasters in mountainous areas, especially in the rainy season. It may result in loss of property and casualties and damage to other facilities and infrastructures such as housing, industry and agricultural land. The National Disaster Management Agency (2016) reported 2,425 of the landslides in Indonesia during 2011-2015. Most of the landslides occurred in the Central Java, West Java, East Java, West Sumatra, and East Kalimantan provinces. The earthquake caused 1,163 of the dead, 112 people were missing, 973 people injured and 48,191 people displaced

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