Tidal Flooding Assessment in Balikpapan Coastline using Modified Coastal Vulnerability Index (CVI)

Luthfiani, Nabila (2025) Tidal Flooding Assessment in Balikpapan Coastline using Modified Coastal Vulnerability Index (CVI). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Wilayah pesisir merupakan salah satu kawasan paling krusial di bumi karena berperan sebagai pusat aktivitas ekologis, manusia, dan ekonomi. Kawasan ini secara alami memiliki kemampuan untuk beradaptasi terhadap perubahan, namun kini menghadapi ancaman yang semakin besar akibat variabilitas iklim dan kenaikan muka air laut. Salah satu bencana pesisir yang paling sering terjadi adalah banjir rob. Banjir rob terjadi ketika air laut meluap dan menggenangi daratan pesisir yang berada di bawah rata-rata muka laut, terutama sebagai akibat dari proses pasang surut. Sebagai negara kepulauan terbesar di dunia dengan garis pantai sepanjang lebih dari 81.000 kilometer, Indonesia sangat rentan terhadap permasalahan ini. Kota Balikpapan yang menjadi pintu gerbang Ibu Kota Nusantara di Kalimantan Timur menjadi salah satu contoh nyata, di mana banjir rob terjadi secara berulang dan mengancam sektor industri, perikanan, hingga pariwisata di wilayah tersebut. Penelitian ini bertujuan untuk menilai tingkat kerentanan fisik wilayah pesisir Balikpapan terhadap banjir rob dengan menggunakan pendekatan Indeks Kerentanan Pesisir atau Coastal Vulnerability Index (CVI) yang telah dimodifikasi.CVI merupakan metode yang umum digunakan untuk mengevaluasi tingkat kerentanan pesisir terhadap erosi dan genangan. Dalam studi ini, CVI diperbarui dengan menambahkan parameter tambahan seperti tutupan lahan dan lebar zona mangrove, yang berperan penting dalam memahami karakteristik infiltrasi dan daya lenting pesisir, terutama saat terjadi kejadian energi tinggi seperti badai atau pasang ekstrem. Penelitian ini menggunakan citra satelit, termasuk Landsat 8, dan menganalisis sejumlah parameter kunci seperti geomorfologi, laju perubahan garis pantai, kemiringan pantai, tinggi gelombang signifikan, kenaikan muka laut relatif, dan kisaran pasang surut. Hasil penelitian menunjukkan bahwa sekitar 21,43% kelurahan diklasifikasikan sebagai tidak rentan, sementara 14,29% termasuk dalam kategori kurang rentan dan sedang. Sebagian besar wilayah, yaitu 35,71%, masuk dalam kategori rentan, dan sisanya sebesar 14,29% tergolong sangat rentan. Temuan ini diharapkan dapat berkontribusi dalam meningkatkan ketahanan pesisir, mendukung upaya adaptasi terhadap perubahan iklim, serta menjadi acuan bagi penelitian selanjutnya di wilayah yang menghadapi tantangan lingkungan dan sosial ekonomi serupa.
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Coastal zones are among the most critical areas on Earth as they are the hubs of ecological, human, and economic activity. These regions possess a natural ability to adapt to changes, yet facing increasing threats from climate variability and sea-level rise. One of the most frequent and coastal hazard is tidal flooding. Tidal flooding occurs when seawater rises onto land in coastal areas that lie below the mean sea level due to the tidal flow process. Indonesia, as the largest archipelagic nation with over 81,000 kilometers of coastline, is particularly susceptible to these challenges. Balikpapan, a coastal city in East Kalimantan, is a prime example, experiencing recurring tidal floods that threaten its industrial, fisheries, and tourism sectors. This study aims to assess the physical vulnerability of Balikpapan’s coastlines to tidal flooding using a modified Coastal Vulnerability Index (CVI). The CVI, a widely used method for evaluating coastal susceptibility to erosion and inundation, was enhanced by incorporating additional parameters such as mangrove zone width. These factors are important for understanding infiltration characteristics and coastal resilience during high-energy events. The study utilized satellite imagery, including Landsat 8, and analyzed key parameters such as geomorphology, shoreline change rates, coastal slope, significant wave height, relative sea-level rise, and tidal range. The results showed that approximately 21.43% of the sub-districts were classified as not vulnerable, while 14.29% fell into the less vulnerable and moderate class. A larger portion, 35.71%, was categorized as vulnerable, and the remaining 14.29% were identified as highly vulnerable. By providing a replicable framework, the findings are expected to contribute to enhancing coastal resilience, supporting climate adaptation efforts, and guiding future research in regions facing similar environmental and socio-economic challenges.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Tidal Flood, Coastal Resilience, Climate Adaptation, SDGs.
Subjects:	G Geography. Anthropology. Recreation > G Geography (General) > G70.212 ArcGIS. Geographic information systems. G Geography. Anthropology. Recreation > G Geography (General) > G70.217 Geospatial data G Geography. Anthropology. Recreation > G Geography (General) > G70.5.I4 Remote sensing G Geography. Anthropology. Recreation > GB Physical geography > GB1399.9 Floods G Geography. Anthropology. Recreation > GC Oceanography > GC89 Sea Level
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29202-(S1) Undergraduate Thesis
Depositing User:	Nabila Luthfiani
Date Deposited:	23 Jul 2025 01:42
Last Modified:	23 Jul 2025 01:42
URI:	http://repository.its.ac.id/id/eprint/120770

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• Tidal Flooding Assessment in Balikpapan Coastline using Modified Coastal Vulnerability Index (CVI). (deposited 23 Jul 2025 01:24)
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