Analisis Data Survei Hidrografi Dalam Penentuan Jalur Kabel Bawah Laut (Studi Kasus : Perairan Papua)

Leksono, Ghoziy Rakha (2025) Analisis Data Survei Hidrografi Dalam Penentuan Jalur Kabel Bawah Laut (Studi Kasus : Perairan Papua). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Instalasi infrastruktur bawah laut, termasuk kabel bawah laut, merupakan bagian penting dalam pengembangan jaringan komunikasi dan energi di wilayah maritim. Tanpa perencanaan yang cermat dan kepatuhan terhadap regulasi, resiko kegagalan instalasi, kerusakan lingkungan dan gangguan terhadap aktivitas maritim dapat meningkat secara drastis. Oleh karena itu penelitian ini, menganalisis data survei hidrografi di Perairan Papua untuk menentukan jalur optimal pemasangan kabel bawah laut. Data diperoleh menggunakan multibeam echosounder (MBES) , sub-bottom profiler (SBP), dan side scan sonar (SSS). Hasil pengolahan batimetri menunjukkan kedalaman yang bervariasi antara 0 hingga -190 m LLWL dengan fitur dasar laut berupa sea channel dan kelerengan yang bervariasi di 0º sampai 88º. Identifikasi jenis sedimen melalui data backscatter MBES menunjukkan dominasi pasir, dengan tanah liat di perairan yang lebih dalam, mengindikasikan dasar laut yang relatif stabil dan mudah untuk penetrasi kabel. Sementara itu, SBP mengidentifikasi satu lapisan sedimen dengan ketebalan 3-5 meter, dan citra SSS berhasil mengidentifikasi objek dasar laut seperti cekungan, hamparan pasir, dan batu karang. Faktor-faktor kedalaman, kelerengan, dan jenis sedimen digunakan sebagai parameter dalam analisis weighted overlay untuk menentukan tingkat keamanan area. Analisis least cost path kemudian diterapkan untuk menentukan jalur alternatif kabel laut dengan biaya kumulatif terendah. Dari berbagai skenario jalur, jalur optimal yang direkomendasikan adalah dari titik B ke titik 3, dengan total panjang 14749,505 meter dan pathcost 45824,92 serta pathcost/meter 3,10. Pemilihan jalur ini tidak hanya mempertimbangkan nilai pathcost/meter terkecil, tetapi juga memastikan jalur tidak melewati objek dasar laut yang berbahaya seperti batu karang, menjadikannya pilihan yang optimal dari sisi keamanan.
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In this research, hydrographic survey data was analyzed in Papuan Waters to determine the optimal route for underwater cable installation, considering the importance of this infrastructure for Indonesia as an archipelago. Data is obtained using multibeam echosounder, sub-bottom profiler, and side scan sonar, then processed with special software such as Qimera, Fledermaus Geocoder Toolbox, SonarWiz 7, and ArcGIS Pro. The results of bathymetric processing show a depth that varies between 0 to -190 meters with a homogeneous water bottom topography but has seabed features in the form of sea channels and very steep slopes in some parts. The classification of slope shows the dominance of the slope area, but there are ravines with a slope of up to 88 degrees. The identification of sediment type through backscatter data shows the dominance of sand, with clay in deeper waters, indicating a relatively stable seabed and easy for cable penetration. Meanwhile, the sub-bottom profiler only identified one layer of sediment with a thickness of 3-5 meters, and the sonar scan side image succeeded in identifying seabed objects such as basins, sand expanses, and coral rocks, with materials that tend to be fine. These factors, namely depth, sediment, and type of sediment, are used as parameters in weighted overlay analysis to determine the security level of the area. Least cost path analysis is then applied to find a single path with the lowest cumulative cost. From various path scenarios, the recommended optimal path is from point B to point 3, with a total length of 14749,505 meters and a pathcost of 45824,921 (or pathcost/meter 3.10). The selection of this path not only considers the smallest pathcost/meter value, but also ensures that the path does not pass through dangerous seabed objects such as corals, making it an optimal choice on the safety side.

Item Type: Thesis (Other)
Uncontrolled Keywords: Survei Hidrografi, Permukaan Dasar Laut, Kabel Bawah Laut, Hydrographic Survey, Seabed Surface, Submarine Cable
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures
Divisions: Faculty of Civil Engineering and Planning > Geomatics Engineering > 29202-(S1) Undergraduate Thesis
Depositing User: Ghoziy Rakha Leksono
Date Deposited: 25 Jul 2025 06:43
Last Modified: 25 Jul 2025 06:43
URI: http://repository.its.ac.id/id/eprint/121564

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