Analisis Penggunaan Model Pasut Global Untuk Pengembangan Model Pemisahan Hidrografi

Putri, Shofa` Amaliah Putri (2025) Analisis Penggunaan Model Pasut Global Untuk Pengembangan Model Pemisahan Hidrografi. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Hidrografi merupakan ilmu yang berfokus pada pengukuran dan deskripsi karakteristik laut serta wilayah pesisir, dengan pasang surut sebagai elemen penting dalam penentuan referensi vertikal. Di laut dalam, keterbatasan distribusi stasiun pasang surut menyulitkan penentuan Chart Datum secara akurat. Teknologi Global Navigation Satellite System (GNSS) memungkinkan reduksi data batimetri secara langsung dengan akurasi tinggi ke sistem referensi tertentu seperti ellipsoid (WGS84). Survei hidrografi tanpa mengukur pasang surut secara langsung merupakan salah satu manfaat utama dari penerapan model pemisahan hidrografi (Hydrography Separation Model/HSM). Penelitian ini bertujuan untuk mengeksplorasi penerapan model pasang surut global dalam pengembangan Hydrography Separation Model (HSM) di Perairan Selatan Jawa. Model TPXO10-atlas v2 dan FES2014 digunakan untuk menentukan nilai Lowest Astronomical Tide (LAT) sebagai referensi Chart Datum. Evaluasi terhadap sepuluh stasiun pasang surut BIG menunjukkan bahwa model TPXO10-atlas v2 memiliki nilai Root Mean Square Error (RMSE) sebesar 0,079 meter, sedangkan model FES2014 sebesar 0,081 meter. Berdasarkan hasil tersebut, TPXO10-atlas v2 dipilih sebagai model terbaik untuk pengembangan HSM. Implementasi HSM dilakukan dengan mengintegrasikan data GNSS, batimetri, model undulasi INAGEOID2020 v2.0, serta model permukaan laut rata-rata DTU21MSS. Diperoleh perbedaan kedalaman sebesar 11 hingga 13 meter terhadap referensi LAT. Berdasarkan standar IHO S-44 edisi ke-6, selisih tersebut masih berada dalam batas toleransi Total Vertical Uncertainty (TVU) untuk Orde 2. Persentase selisih terhadap kedalaman maksimum hanya sekitar 0,18% hingga 0,22%. Dengan demikian, pendekatan ini valid dan efektif untuk survei hidrografi laut dalam, meningkatkan efisiensi dan konsistensi data tanpa ketergantungan pada pengukuran pasut langsung di lapangan.
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Hydrography is a science that focuses on the measurement and description of the characteristics of the sea and coastal areas, with tides as an important element in determining vertical references. In the deep sea, the limited distribution of tide stations makes it difficult to accurately determine Chart Datum. Global Navigation Satellite System (GNSS) technology allows direct, high-accuracy reduction of bathymetry data to a specific reference system such as an ellipsoid (WGS84). Hydrographic survey without directly measuring tides is one of the main benefits of applying hydrography separation model (HSM). This study aims to explore the application of global tidal model in the development of Hydrography Separation Model (HSM) in Southern Java Waters. The TPXO10-atlas v2 and FES2014 models were used to determine the Lowest Astronomical Tide (LAT) value as the Chart Datum reference. Evaluation of ten BIG tidal stations showed that the TPXO10-atlas v2 model has a Root Mean Square Error (RMSE) value of 0.079 meters, while the FES2014 model is 0.081 meters. Based on these results, the TPXO10-atlas v2 was selected as the best model for HSM development. HSM implementation was carried out by integrating GNSS data, bathymetry, INAGEOID2020 v2.0 undulation model, and DTU21MSS mean sea level model. A depth difference of 11 to 13 meters was obtained against the LAT reference. Based on the IHO S-44 6th edition standard, the difference is still within the Total Vertical Uncertainty (TVU) tolerance limit for Order 2. The percentage difference to the maximum depth is only about 0.18% to 0.22%. Therefore, this approach is valid and effective for deep-sea hydrographic surveys, improving efficiency and data consistency without reliance on direct tidal measurements in the field.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Hidrografi, Pasang Surut, Model Pasut, GNSS, Hidrographic Separation Model (HSM), Chart Datum, Batimetri, Hydrography, Tides, Tidal Model, GNSS, Hydrographic Separation Model (HSM), Chart Datum, Bathymetry
Subjects:	G Geography. Anthropology. Recreation > G Geography (General) > G109.5 Global Positioning System G Geography. Anthropology. Recreation > GC Oceanography > GC89 Sea Level T Technology > TC Hydraulic engineering. Ocean engineering > TC424 Water levels V Naval Science > VK > VK555 Navigation.
Divisions:	Faculty of Civil Engineering and Planning > Geomatics Engineering > 29101-(S2) Master Thesis
Depositing User:	Shofa` Amaliah Putri
Date Deposited:	29 Jul 2025 08:23
Last Modified:	29 Jul 2025 08:23
URI:	http://repository.its.ac.id/id/eprint/122833

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