MAJALAH ILMIAH GLOBE
Vol 20, No 1 (2018)

LANDSLIDE VULNERABILITY MAPPING OF BUNGUS BAY COASTAL TOURISM, WEST SUMATERA, INDONESIA USING STORIE METHOD

Gemilang, Wisnu Arya ( Loka Riset Sumber Daya dan Kerentanan Pesisir (LRSDKP), BRSDM-KP-KKP)
Wisha, Ulung Jantama ( Loka Riset Sumber Daya dan Kerentanan Pesisir)
Dhiauddin, Ruzana ( Loka Riset Sumber Daya dan Kerentanan Pesisir)



Article Info

Publish Date
30 Apr 2018

Abstract

Bungus Bay and its surrounding are one of the coastal tourist areas that are frequently visited by domestic as well as international tourists. Morphology around the bay is a mountainous landscape that has a steep slope. Materials forming the hillside around the coast are volcanic rocks, which through. Weathering process resulted in rocky area with thin layer of soil. These conditions are the main factor triggering landslide events. Information regarding vulnerable zone of the landslide is essential to reduce the impact of the landslide phenomena in Bungus Bay. The vulnerability classification was done by applying the Storie method to analyze four main parameters which are, slope, land-use, soil type and rainfall intensity. The landslide vulnerability level in Bungus Bay was divided into five levels, namely very low, low, moderate, high, and very high. High vulnerability covers 39.33 % of the study area. Meanwhile, moderate vulnerability covered 39.20 %. Both levels of vulnerability ware located in the lithosol area which is very sensitive to the soil erosion. Land-use change in protected forest area and the lithosol soil type become the main factors triggering the landslide events. Mitigation efforts in the form of physical development and socialization are to reduce the impacts of the landslide in this area.Keywords: Landslide, vulnerability, storie method, Bungus Bay, coastal

Copyrights © 2018