Evaluasi Rencana Tata Ruang Wilayah Berdasarkan Risiko Gempa Bumi Menggunakan Sistem Informasi Geografis dan Metode Analytical Hierarchy Process (Studi Kasus: Kabupaten Pacitan)

Ega, Azhura Sabrina Putri (2025) Evaluasi Rencana Tata Ruang Wilayah Berdasarkan Risiko Gempa Bumi Menggunakan Sistem Informasi Geografis dan Metode Analytical Hierarchy Process (Studi Kasus: Kabupaten Pacitan). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kabupaten Pacitan merupakan wilayah rawan gempa bumi akibat berada di zona tunjaman laut dan memiliki Sesar Grindulu yang melewati lima kecamatan. Berdasarkan hasil relokasi kejadian gempa oleh BMKG, menunjukkan terdapat celah seismik di sepanjang batas lempeng aktif yang memiliki kemungkinan terjadi pengumpulan energi dan memiliki potensi gempa megathrust dengan besaran skala VIII MMI. Dalam rentang tahun 2021-2024 tercatat Kabupaten Pacitan mengalami 426 kejadian gempa bumi dengan magnitudo berkisar antara M 3,5 hingga M 6,2 dengan pusat gempa di laut lepas hingga daratan. Kerawanan gempa bumi tektonik di Kabupaten Pacitan bertambah dengan ditemukannya Sesar Grindulu yang membentang dari timur laut - barat daya Kabupaten Pacitan yang melewati lima kecamatan. Penelitian ini bertujuan untuk mengevaluasi Rencana Tata Ruang Wilayah (RTRW) Kabupaten Pacitan melalui pemetaan risiko dan tipologi gempa bumi menggunakan metode Sistem Informasi Geografis (SIG) dan Analytical Hierarchy Process (AHP). Bobot parameter peta risiko dan tipologi dihitung menggunakan AHP dengan Consistency Ratio (CR) ≤ 0,1. Hasil peta risiko menunjukkan 58,08% wilayah berisiko rendah, 36,49% berisiko sedang, dan 5,43% berisiko tinggi. Peta tipologi gempa bumi menunjukkan bahaya tinggi di 23,22%, wilayah sedang 20,62%, dan rendah 56,16%. Kesesuaian RTRW berdasarkan peta risiko dan tipologi gempa bumi menunjukkan kawasan hutan lindung, produksi, cagar alam, dan sungai/tubuh air sesuai 100%. Hutan rakyat, pertanian, lahan cadangan, dan permukiman berdasarkan peta risiko memiliki kesesuaian masing-masing 96,41%, 95,85%, 86,04%, dan 56,8% berdasarkan peta risk; serta 77,79%, 73,72%, 79,77%, dan 54,7% berdasarkan peta tipologi. Penelitian ini merekomendasikan peninjauan ulang RTRW untuk meningkatkan mitigasi risiko gempa dan mendukung pembangunan berkelanjutan.
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Pacitan Regency is a seismically active area due to its location in a subduction zone and the presence of the Grindulu Fault, which runs through five districts. According to seismic relocation data from the BMKG, there is a seismic gap along the boundary of an active tectonic plate, which has the potential for energy accumulation and could trigger a megathrust earthquake with a magnitude of VIII on the Modified Mercalli Intensity (MMI) scale. Between 2021 and 2024, Pacitan Regency recorded 426 earthquake events with magnitudes ranging from M 3.5 to M 6.2, with epicenters located both offshore and on land. The seismic hazard in Pacitan Regency has increased with the discovery of the Grindulu Fault, which extends from the northeast to the southwest of Pacitan Regency, passing through five districts. This study aims to evaluate the Spatial Planning Master Plan (RTRW) of Pacitan Regency through earthquake risk mapping and typology using Geographic Information System (GIS) and Analytical Hierarchy Process (AHP) methods. The weights of risk map parameters and typology were calculated using AHP with a Consistency Ratio (CR) ≤ 0.1. The risk map results show that 58.08% of the area is low-risk, 36.49% is moderate-risk, and 5.43% is high-risk. The earthquake typology map indicates high hazard in 23.22%, moderate area in 20.62%, and low in 56.16%. The suitability of the RTRW based on the risk map and earthquake typology shows that protected forests, production forests, nature reserves, and rivers/water bodies are 100% suitable. Community forests, agricultural land, reserve land, and settlements based on the risk map have suitability rates of 96.41%, 95.85%, 86.04%, and 56.8% based on the risk map; and 77.79%, 73.72%, 79.77%, and 54.7% based on the typology map. This study recommends a review of the RTRW to enhance earthquake risk mitigation and support sustainable development.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Gempa Bumi, Rencana Tata Ruang Wilayah, Peta Risiko, Peta Tipologi, Analytical Hierarcy Process, Earthquake, Regional Spatial Plan, Risk Map, Typology Map, Analytical Hierarcy Process
Subjects:	G Geography. Anthropology. Recreation > G Geography (General) > G70.212 ArcGIS. Geographic information systems. G Geography. Anthropology. Recreation > G Geography (General) > G70.217 Geospatial data G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography > GA105.3 Cartography. H Social Sciences > HT Communities. Classes. Races > HT166 City Planning--Environmental aspects Q Science > QE Geology > QE538.8 Earthquakes. Seismology Q Science > QE Geology > QE601 Geology, Structural
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29202-(S1) Undergraduate Thesis
Depositing User:	Azhura Sabrina Putri Ega
Date Deposited:	16 Jul 2025 06:00
Last Modified:	16 Jul 2025 06:00
URI:	http://repository.its.ac.id/id/eprint/119861

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