Analisis Pemodelan Hidrodinamika untuk Menentukan Dominasi Arus Pasang Surut dan ARLINDO di Selat Lombok serta Implikasinya terhadap Keselamatan Navigasi

Hafidhah, Marssha Ardea (2026) Analisis Pemodelan Hidrodinamika untuk Menentukan Dominasi Arus Pasang Surut dan ARLINDO di Selat Lombok serta Implikasinya terhadap Keselamatan Navigasi. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Perbedaan elevasi muka air laut rata-rata antara Samudera Pasifik bagian barat dan Samudera Hindia menyebabkan terjadinya ARLINDO (Arus Lintas Indonesia), dengan salah satu pintu keluar aliran tersebut adalah Selat Lombok. Selain itu, Selat Lombok juga penting bagi jalur pelayaran dunia, yaitu jalur sempit strategis dalam ALKI II dan TSS (Traffic Separation Scheme). Adanya karakteristik arus pasang surut yang kompleks yang terjadi di Selat Lombok dapat menimbulkan hambatan dalam berbagai aspek. Penelitian ini, bertujuan untuk melakukan analisis lebih dalam tentang dinamika perairan di Selat Lombok yang dipengaruhi oleh arus laut yang mendominasi perairan tersebut, serta diaplikasikan untuk keperluan keamanan navigasi. Pemodelan hidrodinamika menggunakan perangkat lunak Delft3D untuk memvisualisasikan pola dan kecepatan arus yang terjadi di perairan tersebut. Hasil model pada penelitian ini, memperoleh uji validasi pada tiga titik pengukuran yang menghasilkan rentang RMSE sebesar 0,165–0,117 m; MAE sebesar 0,132–0,094 m; dan indeks Willmott (d) sebesar 0,985–0,955, yang mengindikasikan kesesuaian model yang baik. Simulasi empat musim memperlihatkan dominasi pergerakan arus ke arah selatan–tenggara sepanjang tahun, dengan kecepatan maksimum 1,012 m/s pada musim timur yang terkonsentrasi di zona penyempitan bagian tengah di selatan selat dan perairan Nusa Penida. Analisis current rose pada lima titik observasi mengidentifikasi dua zona rawan di jalur TSS yang memerlukan kewaspadaan navigasi tertinggi pada musim peralihan I.
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The difference in average sea level elevation between the western Pacific Ocean and the Indian Ocean gives rise to the ITF (Indonesian Throughflow), with the Lombok Strait serving as one of its outlets. Additionally, the Lombok Strait is crucial for global shipping routes, serving as a strategic narrow channel within ALKI II and the TSS (Traffic Separation Scheme). The complex tidal current characteristics in the Lombok Strait, influenced by its unique bathymetry, pose challenges across various aspects. This can lead to difficulties in accurately predicting current patterns and speeds for navigation and related purposes. This study aims to conduct a more in-depth analysis of the water dynamics in the Lombok Strait, which are influenced by the ocean currents dominating the area, and to apply these findings to enhance navigation safety. Hydrodynamic modeling was performed using Delft3D software to visualize the current patterns and velocities in the water. The model results in this study underwent validation testing at three measurement points, yielding an RMSE range of 0.165–0.117 m; an MAE of 0.132–0.094 m; and a Willmott index (d) of 0.985–0.955, indicating good model fit. Four-season simulations showed a predominance of south–southeast current movement throughout the year, with a maximum speed of 1.012 m/s during the east monsoon, concentrated in the central narrowing zone south of the strait and the waters of Nusa Penida. Current rose analysis at five observation points identified two hazardous zones along the TSS route that require the highest navigational caution during transition season I.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	ARLINDO, Arus Pasang Surut, Keselamatan Navigasi, Pemodelan Hidrodinamika, Hydrodynamic Modeling, ITF, Safety of Navigation, Tidal Currents.
Subjects:	G Geography. Anthropology. Recreation > GC Oceanography G Geography. Anthropology. Recreation > GC Oceanography > GC101.2 Seawater--Analysis V Naval Science > VK > VK555 Navigation.
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29202-(S1) Undergraduate Thesis
Depositing User:	Marssha Ardea Hafidhah
Date Deposited:	23 Jul 2026 09:35
Last Modified:	23 Jul 2026 09:35
URI:	http://repository.its.ac.id/id/eprint/136786

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