Pemetaan Tingkat Bahaya Tsunami Secara Kuantitatif Menggunakan Sistem Informasi Geografis (SIG) di Wilayah Teluk Teleng, Pacitan, Jawa Timur

Kartikasari, Dyan (2023) Pemetaan Tingkat Bahaya Tsunami Secara Kuantitatif Menggunakan Sistem Informasi Geografis (SIG) di Wilayah Teluk Teleng, Pacitan, Jawa Timur. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pacitan merupakan salah satu daerah dengan potensi tsunami yang tinggi, khususnya Teluk Teleng, Kecamatan Pacitan. Hal tersebut disebabkan oleh letak Kabupaten Pacitan berada pada zona subduksi jawa yang memiliki pergerakan yang cukup besar dan menghasilkan energi seismik yang dapat memicu terjadinya gelombang tsunami. Sejumlah faktor seperti letak geografis dekat dengan lempeng tektonik yang aktif dan sejarah kejadian tsunami sebelumnya menjadikan wilayah ini memerlukan pemetaan tingkat bahaya tsunami secara kuantitatif. Dalam upaya mitigasi akibat gempa megathrust di pesisir Pacitan, tujuan penelitian ini adalah menentukan area terdampak inundasi tsunami di Teluk Teleng dan membuat peta bahaya tsunami. Metode yang digunakan adalah Sistem Informasi Geografis (SIG) dengan pendekatan spasial dan overlay pembobotan dan skoring. Hasil pengolahan menunjukkan bahwa area dengan morfologi miring landai dan kelerengan 0-8% serta inundansi tsunami >3m memiliki luas area terdampak tertinggi, mencapai 18,68 km2. Peta bahaya tsunami didapatkan melalui proses pembobotan nilai kecepatan dengan ketinggian genangan tsunami. Pembobotan dilakukan berdasarkan matriks inundansi terhadap kecepatan, yang menghasilkan skor bahaya yang lebih akurat. Peta tersebut diklasifikasikan menjadi tiga bagian: KRB tsunami tinggi dengan luas area 19,05 km2, KRB tsunami sedang dengan luas area 2,29 km2, dan KRB tsunami rendah dengan luas area 2,59 km2. Penelitian ini memberikan kontribusi dalam pemahaman karakteristik wilayah terkait bahaya tsunami di Teluk Teleng, Pacitan, dan dapat menjadi dasar dalam upaya mitigasi dan pengurangan risiko bencana tsunami di wilayah pesisir tersebut.
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Pacitan is one of the regions with a high potential for tsunamis, especially Teluk Teleng, Pacitan District. This is due to the fact that Pacitan Regency is located in the Java subduction zone, which experiences significant movement and generates seismic energy that can trigger tsunami waves. Several factors such as the geographical proximity to active tectonic plates and the history of previous tsunami events make this area in need of quantitative mapping of tsunami hazard levels. In an effort to mitigate the impact of megathrust earthquakes on the Pacitan coast, the objective of this study is to determine the areas affected by tsunami inundation in Teluk Teleng and create a tsunami hazard map. The method used is Geographic Information System (GIS) with a spatial approach and overlay weighting and scoring. The processing results show that areas with gently sloping morphology and slopes of 0-8%, as well as tsunami inundation greater than 3m, have the highest affected area, reaching 18.68 km2. The tsunami hazard map is obtained through the weighting of speed values with tsunami inundation height. The weighting is based on the inundation-to-speed matrix, which produces more accurate hazard scores. The map is classified into three sections: High Tsunami Risk Zone with an area of 19.05 km2, Medium Tsunami Risk Zone with an area of 2.29 km2, and Low Tsunami Risk Zone with an area of 2.59 km2. This research contributes to the understanding of the characteristics of tsunami hazards in Teluk Teleng, Pacitan, and can serve as a basis for mitigation efforts and reducing the risk of tsunami disasters in the coastal area.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Bahaya Tsunami, Pacitan, Sistem Informasi Geografis, Tsunami; Tsunami Hazard, Pacitan, Geographic Information System, Tsunami
Subjects:	H Social Sciences > HV Social pathology. Social and public welfare > HV551.5.I4 Hazard mitigation Q Science > Q Science (General) > Q180.55.M38 Mathematical models
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis
Depositing User:	Kartikasari Dyan
Date Deposited:	21 Aug 2023 07:38
Last Modified:	21 Aug 2023 07:38
URI:	http://repository.its.ac.id/id/eprint/102694

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