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All Journal LaGeografiA
Nurrohman, Andy Wibawa
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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. 
Identifikasi Lokasi Potensial Mikrohidro Menggunakan Metode AHP dan SIG di DAS Sembakung Kalimantan Utara Nurrohman, Andy Wibawa; Adyatma, Rafi; Awaliah, Rohmatul Arsy; Fadilah, Hasna Rizqi
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.v23i3.73816

Abstract

Microhydro Power Plant (MHP) is a promising renewable energy solution for remote rural areas that have not been reached by electricity, especially in areas with abundant water resources. This study aims to identify potential locations for MHP development in the Sembakung Watershed, North Kalimantan, by integrating the Analytical Hierarchy Process (AHP) and Geographic Information System (GIS) methods. Seven spatial parameters were used in the analysis, namely elevation, slope, distance from the river, land cover, number of electricity customers, and level of ground motion vulnerability. Each parameter was weighted using AHP based on its level of influence on the feasibility of MHP development, and processed in GIS to produce a location suitability map. The results of the analysis show that the Lumbis Ogong sub-district area has a high level of suitability for MHP development, supported by ideal geographical characteristics and urgent electrical energy needs. This study shows that the AHP-SIG approach is effective in supporting spatial decision-making and can be a local potential-based renewable energy planning strategy. The findings also provide an opportunity to sustainably accelerate rural electrification in Indonesia's border regions, which are still lagging in terms of energy infrastructure.
Co-Authors Adyatma, Rafi Awaliah, Rohmatul Arsy Fadilah, Hasna Rizqi Putra, Andika Permadi