Multi-Hazard Analysis in Gunungkidul Regency Using Spatial Multi-Criteria Evaluation

Mustikaningrum, Melati and Widhatama, Adrianus Farrel and Widantara, Khrisna Wasista and Ibrohim, Mirza and Hibatullah, Muhammad Fikri and Larasati, Rinanda Amdalista Prastia and Utami, Sri and Hadmoko, Danang Sri (2023) Multi-Hazard Analysis in Gunungkidul Regency Using Spatial Multi-Criteria Evaluation. Forum Geografi, 37 (1). 35 – 45. ISSN 08520682

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Abstract

This study has two aims: to determine the spatial distribution of multi-hazard levels and to discover the interactions, interdependencies, and effects that cascade among hazards in Gunungkidul Regency, Special Region of Yogyakarta. A multi-hazard map was created with a scale of 1:250,000 and modelled using SMCE (Spatial Multi-Criteria Evaluation). The conditioning factors used included slope, rainfall, historical data, river distance, geomorphology, land cover, lithology, and fault distance. The selected conditioning factors for each hazard were then weighted using weighted overlay analysis. The results showed that the area of Gunungkidul can be included in the high-risk category for floods, since the probability of flooding is 56.72, the probability of landslides is 9.14, that of drought is 48.86, and that of seismic disturbance is 20.83. (Multi-hazard maps are created by overlaying flood, landslide, seismic, and drought hazard maps.) After these risk factors were calculated, the regions on the multi-hazard map were re-categorized into five hazard classes. All areas in Gunungkidul Regency have multiple hazards, with risk factors of different magnitudes. The interaction between hazards can generate new hazards that are called cascading hazards. The cascading hazards in the study area are most likely to occur in the north of Gunungkidul Regency with its very high seismic and landslide hazard risk factors, due to the geological and geomorphological conditions of the Ba-turagung Structural Hills. © 2023, Muhammadiyah University of Surakarta. All rights reserved.

Item Type: Article
Additional Information: Cited by: 10; All Open Access, Gold Open Access
Uncontrolled Keywords: Multi-Hazard, Spatial Multi-Criteria Evaluation (SMCE), Weighted Overlay, Cascading Effects.
Subjects: G Geography. Anthropology. Recreation > GB Physical geography
Divisions: Faculty of Geography > Departemen Geografi Lingkungan
Depositing User: Sri Purwaningsih Purwaningsih
Date Deposited: 04 Sep 2024 04:12
Last Modified: 04 Sep 2024 04:12
URI: https://ir.lib.ugm.ac.id/id/eprint/6346

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