Soil Movement Analysis Using Geospatial Information System Method in Gunuang Padang Area Batang Arau Village

Abstract

Batang arau village is an area that has an area around Gunung Padang. Padang Mountain is a small hill in the south of the Padang city which is directly adjacent to the Indian Ocean. Based on existing history, this area has experienced landslides which caused property losses and the loss of the lives of residents in that location. As a tourist area and a fairly densely populated residential area, knowing the areas prone to land movement is a must, so that people understand the potential for land movement that exists in the location where they live. Geospatial information system is a method that can be used to map the soil vulnerability conditions in the research area. Based on the soil movement model developed by Puslittanak in 2004, 6 supporting maps are needed to produce a map of soil movement around the research area, namely, regional geological maps, rainfall maps, geomorphological maps, soil type maps, and rock type maps. The six maps are then combined into one to produce a soil vulnerability map in the research location. Based on the results of research, the area of Batang arau subdistrict is included in areas with medium-very high soil movement vulnerability. Areas that are included in residential areas are in the medium vulnerability category, while areas that are included in the tourism object of Siti Nurbaya are in the very high vulnerability category.