ANALISIS PERUBAHAN GARIS PANTAI TAHUN 2004, 2014, DAN 2025 TERHADAP PENGELOLAAN PESISIR DI KABUPATEN INDRAMAYU

AISAHRUL HUTAMI, . (2026) ANALISIS PERUBAHAN GARIS PANTAI TAHUN 2004, 2014, DAN 2025 TERHADAP PENGELOLAAN PESISIR DI KABUPATEN INDRAMAYU. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.

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Abstract

Perubahan garis pantai dipengaruhi oleh faktor alam dan aktivitas manusia. Penelitian ini bertujuan untuk menganalisis perubahan garis pantai di Kabupaten Indramayu tahun 2004, 2014, dan 2025 menggunakan Digital Shoreline Analysis System (DSAS). Citra Landsat-7 dan Landsat-8 diolah melalui Google Earth Engine (GEE), dengan ekstraksi garis pantai menggunakan indeks Modified Normalized Difference Water Index (MNDWI) dan Normalized Difference Vegetation Index (NDVI). Hasil ekstraksi dianalisis menggunakan parameter Net Shoreline Movement (NSM), Linear Regression Rate (LRR), dan End Point Rate (EPR). Panjang garis pantai tercatat 157,3 km pada 2004, menyusut menjadi 147,9 km pada 2014, dan sedikit bertambah menjadi 148,4 km pada 2025. Dari 11 kecamatan, 6 mengalami abrasi, 3 stabil, dan 2 akresi selama 2004-2025. Kecamatan Karangampel mencatat rata-rata abrasi tertinggi (-216,38 meter, laju -10,26 m/tahun) dan Kecamatan Indramayu sebagai rata-rata akresi tertinggi (99,54 meter, laju 4,67 m/tahun). Wilayah Muara Cimanuk didominasi akresi ekstrem dengan rata-rata laju 22,68 m/tahun. Hasil analisis spasial menunjukkan bahwa akresi ekstrem tersebut bertepatan dengan zona gelombang dan arus terendah pada Musim Timur. Kondisi ini menyebabkan sedimen yang dibawa sungai mengendap di mulut muara, sehingga terjadi pendangkalan yang menyumbat alur pelayaran dan mengganggu aktivitas keluar-masuk kapal nelayan. Perubahan garis pantai di Kabupaten Indramayu merupakan hasil interaksi antara rendahnya energi laut dan aktivitas di kawasan pesisir. Pengelolaan wilayah pesisir perlu diarahkan pada normalisasi alur muara, pengendalian pemanfaatan lahan tambak, serta rehabilitasi mangrove secara terpadu dengan melibatkan pemerintah, masyarakat, dan pihak swasta. *** Shoreline change is influenced by both natural processes and human activities. This study analyze shoreline changes in Indramayu Regency in 2004, 2014, and 2025 using the Digital Shoreline Analysis System (DSAS). Landsat 7 and Landsat 8 imagery were processed in Google Earth Engine (GEE), while shoreline extraction was performed using the Modified Normalized Difference Water Index (MNDWI) and the Normalized Difference Vegetation Index (NDVI). The extracted shorelines were analyzed using the Net Shoreline Movement (NSM), Linear Regression Rate (LRR), and End Point Rate (EPR) parameters. The shoreline length was recorded at 157.3 km in 2004, decreased to 147.9 km in 2014, and slightly increased to 148.4 km in 2025. Of the 11 coastal districts, six experienced erosion, three remained relatively stable, and two experienced accretion during the 2004–2025 period. Karangampel District recorded the highest average erosion (−216.38 m, with a rate of −10.26 m/year), while Indramayu District showed the highest average accretion (99.54 m, with a rate of 4.67 m/year). The Cimanuk Estuary exhibited the most extreme accretion, with an average rate of 22.68 m/year. Spatial analysis indicated that this extreme accretion coincided with the lowest wave and current energy during the East Monsoon. These conditions promoted the deposition of river-borne sediments at the estuary mouth, resulting in channel shoaling that obstructed navigation and disrupted the movement of fishing vessels. Shoreline changes in Indramayu Regency are driven by the interaction between low marine energy and anthropogenic activities in the coastal zone. Coastal management should therefore prioritize estuary channel normalization, sustainable control of aquaculture land use, and integrated mangrove rehabilitation involving government agencies, local communities, and the private sector.

Item Type:	Thesis (Sarjana)
Additional Information:	1). Ilham Badaruddin Mataburu, S.Si, M.Si; 2). Della Ayu Lestari S.Si, M.Si.
Subjects:	Geografi, Antropologi > Geografi Geografi, Antropologi > Oceanografi
Divisions:	FIS > S1 Geografi
Depositing User:	Users 35057 not found.
Date Deposited:	04 Aug 2026 06:17
Last Modified:	04 Aug 2026 06:17
URI:	http://repository.unj.ac.id/id/eprint/68426

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