ANALISIS ZONA RAWAN BENCANA TANAH LONGSOR MENGGUNAKAN PENDEKATAN FUZZY ANALYTICAL HIERARCHY PROCESS (FAHP). STUDI KASUS : DAERAH BARANGIN DAN SEKITARNYA, KOTA SAWAHLUNTO, SUMATERA BARAT

KURNIAWAN, DEVYANTO and Setiawan, Budhi (2025) ANALISIS ZONA RAWAN BENCANA TANAH LONGSOR MENGGUNAKAN PENDEKATAN FUZZY ANALYTICAL HIERARCHY PROCESS (FAHP). STUDI KASUS : DAERAH BARANGIN DAN SEKITARNYA, KOTA SAWAHLUNTO, SUMATERA BARAT. Undergraduate thesis, Sriwijaya University.

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Abstract

Penelitian ini bertujuan untuk menganalisis zona rawan bencana tanah longsor di Daerah Barangin dan sekitarnya, Kota Sawahlunto, Sumatera Barat, dengan menggunakan pendekatan Fuzzy Analytical Hierarchy Process (FAHP) sebagai metode pengambilan keputusan multikriteria yang mampu menangani ketidakpastian. Wilayah penelitian memiliki topografi curam, geologi tidak stabil, curah hujan tinggi, serta perubahan tata guna lahan yang intensif, sehingga memerlukan pemetaan kerawanan yang komprehensif. Penilaian risiko dilakukan dengan mempertimbangkan parameter kemiringan lereng, curah hujan, jenis tanah, dan tutupan lahan, yang masing-masing diberikan bobot melalui perbandingan berpasangan dalam bentuk fuzzy triangular number dan diolah menggunakan sistem informasi geografis. Hasil analisis menunjukkan tiga tingkat kerentanan longsor, dengan zona paling rawan berada di lereng curam dan sekitar aliran sungai. Faktor utama yang memengaruhi tingkat kerawanan adalah kemiringan lereng dan curah hujan. Validasi model menggunakan kurva ROC menghasilkan nilai AUC sebesar 0,734, menunjukkan bahwa model memiliki tingkat akurasi yang cukup baik. Secara keseluruhan, pendekatan FAHP terbukti efektif dalam mengintegrasikan berbagai faktor risiko dan memberikan representasi zonasi yang sesuai dengan kondisi di lapangan, sehingga dapat dijadikan dasar bagi strategi mitigasi bencana maupun penelitian lanjutan.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Bencana, Tanah Longsor, FAHP, Weighted Overlay, ROC, AUC
Subjects: G Geography. Anthropology. Recreation > GB Physical geography > GB1001-1199.8 Groundwater. Hydrogeology
Q Science > QE Geology > QE1-996.5 Geology
T Technology > TA Engineering (General). Civil engineering (General) > TA703-712 Engineering geology. Rock mechanics. Soil mechanics.Underground construction
T Technology > TD Environmental technology. Sanitary engineering > TD878-894 Special types of environment Including soil pollution, air pollution, noise pollution
Divisions: 03-Faculty of Engineering > 34201-Geological Engineering (S1)
Depositing User: Devyanto Kurniawan
Date Deposited: 30 Jul 2025 03:05
Last Modified: 30 Jul 2025 03:05
URI: http://repository.unsri.ac.id/id/eprint/181621

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