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SPATIAL ANALYSIS OF SHORELINE CHANGES IN THE COASTAL OF SUBANG DISTRICT, WEST JAVA Ankiq Taofiqurohman; M. Furqon Azis Ismail
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1421.524 KB) | DOI: 10.29244/jitkt.v4i2.7790

Abstract

ABSTRACT Observation of coastal shoreline changes in the Subang District was conducted using Digital Shoreline Analysis System Program based on the satelite images of Landsat TM from 1996 to 2010. The purpose of this study was to determine the distance of shoreline change. Methods used in this study were field survey and regression analysis of shoreline data. The results of this study indicated the existence of a region experiencing accretion and abrasion. The maximum width of accretion of the coast was 1,051.55 meter while the maximum abration was 1,206.83 meter. Coastal shoreline change in Subang District occurred mainly due to the development activities such as residential construction, altering the coastal mangrove to ponds and rice paddies, and sediment transport from the river around Subang District. Keywords: shoreline, Subang District, satelite images, accretion, abration
PEMETAAN DAN PEMODELAN RIP CURRENT PADA KAWASAN WISATA PANTAI TELUK POPOH TULUNGAGUNG JAWA TIMUR M. Arif Zainul Fuad; Christian Harel; M. Furqon Azis Ismail
Maspari Journal : Marine Science Research Vol 15, No 1 (2023)
Publisher : UNIVERSITAS SRIWIJAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/maspari.v15i1.16341

Abstract

Wilayah pantai merupakan area yang biasa digunakan oleh para wisatawan untuk rekreasi. Namun, kasus kecelakaan pada wilayah pantai sendiri masih sangat tinggi yang mana salah satu faktor penyebabnya adalah rip current. Berdasarkan data dari Kantor Desa Besole, Kecamatan Besuki, Kabupaten Tulungagung, Jawa Timur bahwa terdapat 23 kasus korban terbawa arus dari tahun 2002 – 2012. Maka dari itu, diperlukan adanya observasi maupun prediksi terhadap kemunculan rip current pada Teluk Popoh. Penelitian ini bertujuan untuk menduga titik lokasi potensi kemunculan rip current; mengetahui karakteristik dan tipe rip current; dan mengetahui pengaruh parameter oseanografi terhadap potensi kemunculan rip current pada kawasan wisata Teluk Popoh. Data yang digunakan adalah data angin, gelombang, batimetri, pasang surut, kemiringan pantai, foto udara, dan citra satelit Digital Globe.  Penelitian dilakukan dari tanggal 19 Desember 2019 hingga 14 Februari 2020 yang terdiri dari survei lokasi; pengambilan data batimetri, pasang surut, dan foto udara di lapang; pengolahan data primer dan sekunder.  Identifikasi potensi kemunculan rip current dilakukan secara visual melalui citra satelit Digital Globe, foto udara dan pemodelan. Hasil penelitian menunjukkan bahwa terdapat beberapa lokasi indikasi kemunculan rip current jika diidentifikasi berdasarkan ciri – cirinya.  Selain itu, titik lokasi dan waktu kemunculan serta karakteristik dari rip current pada Teluk Popoh bervariasi tergantung pada faktor – faktor yang mempengaruhinya seperti perubahan musim, tinggi gelombang, kemiringan pantai, batimetri, keberadaan beach cusps, bentuk pantai, dan tipe pantai.
Drivers of Tidal Flooding and Coastal Vulnerability in the Riau Islands, Indonesia: A Time-Series Analysis (2022-2024) Latifah, Laila; Pranowo, Widodo Setiyo; Mujiasih, Subekti; Ratnawati, Herlina Ika; Hatmaja, Rahaden Bagas; Suhana, Mario Putra; Setiyadi, Johar; Lelalette, Johanis Dominggus; Izzaturrahim, Muh. Hafizh; Ismail, M. Furqon Azis; Syah, Achmad Fachruddin; Ryanto, Fauzan Novan; Setiyono, Heryoso; Helmi, Muhammad
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 3 (2025): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.30.3.425-437

Abstract

The Indonesian Maritime Continent is highly vulnerable to climate variability and change, as exemplified by tidal flooding events in the Riau Islands from 2022 to 2024. This study aimed to analyze the characteristics of sea level dynamics and anomalies associated with tidal flooding (rob) and identify the contributing factors. Data on tidal flooding events were gathered from press and online social media reports, while additional information on significant wave height, ocean currents, and wind was obtained from the CMEMS (Copernicus Marine Environment Monitoring Service) Marine Copernicus archives (marine.copernicus.eu). Observational data from tide gauge stations were also accessed via the IOC sea level monitoring system (ioc-sealevelmonitoring.org). The findings revealed a high probability of tidal flooding during the north wind season, particularly in January and February. Notably, tidal elevations during flooding events reached 3.06 m on January 25, 2023, 3.00 m on February 21, 2023, and 3.09 m on February 12, 2024. These events were driven by a combination of oceanographic and atmospheric factors, including high tidal ranges during spring tides, strong wind speeds averaging 19.04 to 21.43 knots in January–February 2023 and 18.65 knots in February 2024, dominant southward current patterns, and significant wave heights reaching up to 1.08 m. The alignment of the sun, moon, and earth during full and new moon phases amplified gravitational forces, causing elevated sea levels. Furthermore, strong winds during the north wind season contributed to higher wave heights, intensifying flooding impacts. Analysis of current patterns indicates that the highest speeds were recorded during the northern wind season, specifically in January and February, which coincides with the tidal flooding events. The currents predominantly moved southward, aligning with the wind direction during this season. This study reveals oceanographic and atmospheric interactions driving tidal flooding, offering insights for mitigation and adaptation to enhance resilience in vulnerable coastal regions.