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Identifikasi Bahaya Longsor Lahan di Sebagian Wilayah Poncokusumo dan Wajak Kabupaten Malang

Listyo Yudha Irawan, Fakultas Ilmu Sosial Jurusan Geografi, Ade Yulyanto, Ahmad Zaini T.S, Anang Ma’Ruf, Elok Nailatus Sa'Idah, Fadel Mahardhika Setiawan
Geodika: Jurnal Kajian Ilmu dan Pendidikan Geografi , Volume 4, pp 160-171; doi:10.29408/geodika.v4i2.2474

Abstract: Poncokusumo and Wajak regions are one of the Districts in Malang Regency. Poncokusumo and Wajak have varied land uses, geology and morphogenesis. This physiographic condition has an effect on the increasing threat of landslides. This study aims to determine the level of landslide hazard and its distribution. The method used in the identification of landslide hazards is the scoring method which refers to the 2012 BNPB Head Regulation, Indonesian National Standard number 13-7124-2005, the Indirect Method, and the Indonesian Disaster Risk (RBI) BNPB 2016. The results showed that the geological conditions of the study area were composed of volcanic materials such as lava and lava deposits. This material is loose and unstable. Based on the slope classification, this area consists of flat areas with a slope of 0-8% to steep areas with a slope of> 40%. Based on the morphological conditions, it can be seen that this area is an area prone to landslides. Landslide hazard levels in parts of Poncokusumo and Wajak are low and medium. Low landslide hazard levels are dominated by forest land use. The level of danger of a lonsor is being dominated by the use of residential land. The area with a low hazard level is 860.8 Ha and the area with a moderate hazard level is 365.1 Ha. Keywords: landslide, hazard, GIS
Keywords: land use / landslide / lava / Indonesian / Malang / BNPB / Poncokusumo and Wajak

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