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Geosciences 2018, 8(6), 219; https://doi.org/10.3390/geosciences8060219

Regional Landslide Potential Mapping in Earthquake-Prone Areas of Kepahiang Regency, Bengkulu Province, Indonesia

1
Physics Department, Universitas Gadjah Mada, 55281 Yogyakarta, Indonesia
2
Department of Physics, Faculty of Mathematics and Natural Sciences, University of Bengkulu, 38371 Bengkulu, Indonesia
3
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, 55281 Yogyakarta, Indonesia
4
Department of Geological Engineering, Faculty of Engineering, Universitas Gadjah Mada, 55281 Yogyakarta, Indonesia
5
Department of Civil Engineering, Faculty of Engineering, Universitas Gadjah Mada, 55281 Yogyakarta, Indonesia
*
Authors to whom correspondence should be addressed.
Received: 8 February 2018 / Revised: 17 April 2018 / Accepted: 17 April 2018 / Published: 15 June 2018
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Abstract

Kepahiang regency is an area above the Musi segment of the Sumatran fault system. This condition makes the study area prone to natural disasters such as landslides in the slope area caused by earthquakes due to tectonic plate movement. The objective of this study was to locate potential landslide areas in earthquake-prone areas of Kepahiang regency, Bengkulu province, Indonesia. We performed horizontal to vertical spectral ratio (HVSR) analysis and simple additive weighting (SAW) methods to accomplish the goal. The acquisition of field data involved a broad band seismometer PASI Gemini-2 (triaxial geophone). The microtremor data recorded in the field were then analyzed by the wave spectrum. The results showed that the landslide potential in the study area could be divided into three categories, i.e., low, medium, and high potential. Areas with high potential should be more aware of the threat of landslides, especially in population-dense areas. The greatest threat in the study area is an earthquake along Sumatra’s active fault. An earthquake that occurs in a very steep, landslide-prone area can increase risk and trigger a landslide. View Full-Text
Keywords: landslide potential; HVSR method; SAW method; Sumatra’s active fault landslide potential; HVSR method; SAW method; Sumatra’s active fault
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Hadi, A.I.; Brotopuspito, K.S.; Pramumijoyo, S.; Hardiyatmo, H.C. Regional Landslide Potential Mapping in Earthquake-Prone Areas of Kepahiang Regency, Bengkulu Province, Indonesia. Geosciences 2018, 8, 219.

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