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Putra, Andika Permadi
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Pemantauan Perubahan Posisi Garis Pantai Patimban untuk Mendukung Perencanaan Kawasan Pesisir Berkelanjutan Putra, Andika Permadi; Nurrohman, Andy Wibawa
LaGeografia Vol 23, No 3 (2025): Juni
Publisher : UNIVERSITAS NEGERI MAKASSAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/lageografia.v23i3.73901

Abstract

Shoreline monitoring in the Patimban Beach area is needed to understand the phenomenon of sedimentation and abrasion that affect development patterns in coastal areas. The method used to obtain shoreline change data is the Digital Analysis Shoreline System (DSAS), using shoreline position data for several different times. Existing shoreline data is obtained from processing Sentinel 2 satellite imagery that utilizes green and near-infrared channels to separate water bodies and land with the Normalized Difference Water Index (NDWI) algorithm. The results obtained from the DSAS method for Patimban Beach from 2020-2024 are the occurrence of coastal accretion and abrasion. In general, the acceleration of changes in Patimban Beach between 2020-2024 ranges from -35.54 meters per year. From the results of this calculation, it is hoped that it will be a reference for the sustainable development of the Patimban Beach area.AbstrakPemantauan garis Pantai di kawasan Pantai patimban diperlukan untuk memahami fenomena sedimentasi dan abrasi yang berpengaruh terhadap pola Pembangunan di akwasan pesisir. Metode yang digunakan untuk mendapatkan data perubahan garis Pantai adalah Digital Analysis Shoreline System (DSAS), dengan menggunakan data posisi garis Pantai untuk beberapa waktu yang berbeda. Data garis Pantai eksisiting didapatkan dari pengolahan citra satelit Sentinel 2 yang memanfaatkan kanal hijau dan infrared dekat untuk memisahkan badan air dan daratan dengan algoritma Normalized Difference Water Index (NDWI). Hasil yang didapatkan dari metode DSAS untuk Pantai Patimban dari tahun 2020-2024 adalah terjadinya akresi dan abrasi Pantai. Secara umum, percepatan perubahan Pantai Patimban antara tahun 2020-2024 berkisar antara -35.54 meter per tahun. Dari hasil penghitungan ini, diharapkan jadi acuan untuk Pembangunan kawasan Pantai Patimban yang berkelanjutan. 
Dampak Perubahan Garis Pantai terhadap Status Titik Dasar dan Garis Pangkal Indonesia: Studi Kasus Nias Utara, Pulau Wunga, dan Bireun, Indonesia Kadafi Anantri, Nofal Mahdi; Djunarsjah, Eka; Putra, Andika Permadi
Jurnal Sosioteknologi Vol. 24 No. 1 (2025): MARCH 2025
Publisher : Fakultas Seni Rupa dan Desain ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/sostek.itbj.2025.24.1.9

Abstract

Beach is a very dynamic environment because, in that environment, various processes occur, such as sedimentation, abrasion, and transportation. Likewise, the shoreline has a dynamic nature to change. Shoreline Changes can affect a country's maritime boundaries. This is because the changing shoreline can change the draw of the Baseline, which is the reference for measuring the maritime boundary. Therefore, it is necessary to monitor the shoreline where the Basepoint and Baseline are located. In this study, measurements of shoreline changes were made using SPOT 6 data which has a spatial resolution of 1.5 m. Shoreline changes were calculated using the DSAS. From the calculation results, the average rate of accretion in the Base Point 167 area is 5.63 m/year. Then in the area around Base Point 168 it has an average accretion rate of 2.27 m/year. In the area around Base Point 180, an average accretion rate of 15.11 m/year is obtained. The accretion process results in a change in the shoreline, resulting in a change in the configuration of the low water line which is the location where the base point is placed. Thus, changes in the shoreline can affect the withdrawal of Indonesia’s maritime boundaries.
Co-Authors Djunarsjah, Eka Kadafi Anantri, Nofal Mahdi Nurrohman, Andy Wibawa