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All Journal Jurnal Fisika Unand
Faizah Musra
Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas
Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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Analisis Spatiotemporal Dinamika Garis Pantai Dan Pemetaan Zona Bahaya Tsunami Di Kota Padang Menggunakan Penginderaan Jauh dan Sistem Informasi Geografis Faizah Musra; Elistia Liza Namigo
Jurnal Fisika Unand Vol 15 No 2 (2026)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.15.2.132-139.2026

Abstract

The city of Padang is one of Indonesia's coastal areas that is highly vulnerable to tsunamis due to its location directly facing the Mentawai–Sumatra megathrust subduction zone. This study aims to analyze coastal dynamics using multitemporal satellite imagery and examine its relationship with tsunami hazard zoning based on the physical characteristics of the area. The methodology includes digitizing the coastline for 2013 and 2025, analyzing the rate of coastline change using the Digital Shoreline Analysis System (DSAS), and combining spatial parameters such as elevation, slope, distance from the coastline, and proximity to rivers to produce a tsunami hazard zone map. Overlay analysis indicates that areas with low elevation, gentle slopes, and proximity to river mouths and coastlines fall into the category of high tsunami vulnerability. The results of the study show spatial variations in coastal dynamics in Padang City, with significant abrasion observed in Koto Tangah District (-1.754 m/year) and Padang Selatan (-1.051 m/year), while notable accretion was recorded in Bungus Teluk Kabung (+1.470 m/year). This study proves that the integration of remote sensing data and Geographic Information Systems (GIS) provides a comprehensive spatial framework to support coastal disaster mitigation efforts and risk-based spatial planning.
Co-Authors Elistia Liza Namigo, Elistia