DOI: https://doi.org/10.14710/jgt.7.1.2024.1-8

Estimasi Slip Rate di Sesar Semangko menggunakan ALOS PALSAR 1

1Teknik Geomatika, Institut Teknologi Sumatera, Jl. Terusan Ryacudu Way Hui, Kecamatan Jati Agung, Lampung Selatan 35365, Indonesia, Indonesia

2Teknik Geomatika, Institut Teknologi Sumatera, Indonesia

Received: 11 Dec 2023; Revised: 5 Jan 2024; Accepted: 16 Jan 2024; Published: 24 Oct 2024.
Open Access Copyright (c) 2024 Jurnal Geosains dan Teknologi under http://creativecommons.org/licenses/by-sa/4.0.

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Abstract

Provinsi Lampung merupakan salah satu pulau yang memiliki potensi bencana gempa bumi di masa mendatang dikarenakan berada dalam jalur sesar Sumatera yaitu Sesar Semangko.  Potensi gempa bumi di zona sesar Semangko dapat diestimasi dengan menghitung slip rate sesar Semangko. Penelitian ini bertujuan untuk mengestimasi slip rate sesar Semangko menggunakan data Advanced Land Observing Satellite (ALOS) Phased Array L-band SAR (PALSAR 1) dengan rentang data 2007 hingga 2010. Data InSAR diestimasi menggunakan metode the small baseline subset (SBAS) InSAR time-series technique dengan menggunakan koreksi velocity dari stasiun GNSS. Hasil LOS velocity InSAR terkoreksi dengan velocity stasiun GNSS sebesar 2,97 mm/tahun sampai dengan 8,67 mm/tahun. Hasil estimasi slip rate sesar Semangko menggunakan ALOS PALSAR 1 sebesar 11,40 mm/tahun.

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Keywords: Sesar Semangko; InSAR; ALOS PALSAR 1; Slip rate
Funding: Institut Teknologi Sumatera

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