Pemetaan Bahaya Tanah Longsor Di Kabupaten Pesawaran Berbasis Sistem Informasi Geografis
Landslide disasters can occur due to the movement of soil and rock masses down the slopes due to disruption of the stability of the soil and rock that make up the slopes. Pesawaran Regency is one of the districts in Lampung Province which experiences landslide evry year. Based on landslide disaster incident record data from the Regional Disaster Management Agency (BPBD) of Pesawaran Regency, landslide have occurred 26 times from 2016 to 2022. There are also supporting factors for landslide, namely rainfall. Therefore, this study aims to make rainfall maps and slope maps in Pesawaran Regency, process research data to obtain information on the level of soil hazard. landslides in Pesawaran Regency. The parameters used in this study were rainfall obtained from the Meteorology, Climatology and Geophysics Agency (BMKG), slope obtained from the processing of DEMNAS, geology, soil type and land cover obtained from the Regional Development Planning Agency (BAPPEDA). The data is processed using GIS-based software with scoring and weighting methods, and overlays are performed to combine the five parameters.
The results of this study indicate that the parameters that influence the landslide hazard in Pesawaran Regency are rainfall with a range of <2000 mm/year and slope with a range of less than eight percent. Then Pesawaran Regency is an area with a relatively low level of landslide disasters with a percentage of 52% of the total area of Pesawaran Regency. Based on the level of vulnerability, it has five levels of vulnerability, namely very low 14.098 ha, low 65.519 ha, medium 39.922 ha, high 14.098 ha and very high 274 ha.
Keywords: Landslide, Weighting, Scoring, Geographic Information System
URI
https://repo.itera.ac.id/depan/submission/SB2302230024
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