ALAM, MIKALA FAZA (2022) SIMULASI POLA ARUS PERMUKAAN 2 DIMENSI DI PERAIRAN PULAU NYAMUK TAMAN NASIONAL KARIMUNJAWA PADA MUSIM PERALIHAN II (22o499). Undergraduate thesis, Universitas Diponegoro.

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Abstract

ABSTRAK
Mikala Faza Alam. 26050117130060 Simulasi Pola Arus Permukaan 2 Dimensi
Di Perairan Pulau Nyamuk Taman Nasional Karimunjawa Pada Musim Peralihan
II (Elis Indrayanti dan Muh. Yusuf)
Pulau Nyamuk merupakan salah satu gugusan pulau – pulau yang berada di
Kawasan Taman Nasional Karimunjawa perairan Karimunjawa, Kabupaten
Jepara, Provisi Jawa Tengah. Karimunjawa memiliki karakteristik yang spesifik
baik secara geografis maupun ekologis, yaitu kawasan perairannya adalah tipe
semi tertutup, karena dikelilingi oleh gugusan pulau-pulau, baik gugusan pulaupulau besar maupun gugusan pulau-pulau kecil. Perairan Karimunjawa akan
sangat dipengaruhi oleh bagaimana arah, kecepatan dan pola arus serta
karakteristik gelombang yang terjadi pada saat tersebut. Penelitian ini bertujuan
untuk mengetahui pola pergerakan arus permukaan dengan pendekatan model dua
dimensi di Perairan Nyamuk, Karimunjawa. Pola pergerakan arus diperoleh
berdasarkan model pendekatan hidrodinamika 2D. Verifikasi kesesuaian model
dilakukan dengan membandingkan terhadap hasil pengukuran lapangan yang
dilaksakanan pada tanggal 23 Oktober – 26 Oktober 2021. Pengukuran arus
dilakukan dengan metode deskriptif kuantitatif. Hasil penelitian menunjukkan
bahwa kecepatan arus maksimum 0,056 m/s ke arah 66° dan arus minimum 0,001
ke arah 38° dengan karakteristik arus pasut sebesar 51,44%. Pasang surut perairan
Nyamuk, Karimunjawa bertipe pasang surut tunggal. Hasil simulasi model
menggunakan pendekatan hidrodinamika 2D menggambarkan arah pergerakan
arus yang terjadi cenderung bersifat bolak–balik akibat adanya dominasi arus
pasut dengan kecepatan rata–rata 0,013 m/s. Pada kondisi pasang, pola arus
bergerak dari arah Utara menuju Barat Daya bertemu Arus dari arah Selatan
menuju Timur Laut dan mengalami pembelokan di sekitar Pulau nyamuk ke arah
Barat. Pada kondisi surut, pola arus bergerak ke arah Barat Daya
Kata kunci : Pola Arus, Pasang Surut, Pulau Nyamuk, Hidrodinamika 2D

ABSTRACT
Mikala Faza Alam. 26050117130060 Simulation of 2 Dimensional Ocean
Surface Current Patterns in Nyamuk Island, Karimunjawa National Park During
2
nd
Transitional Monsoon (Elis Indrayanti dan Muh. Yusuf)
Nyamuk Island is one of island group in the Karimunjawa National Park area of
Karimunjawa, Jepara Regency, Central Java Province. Karimunjawa has specific
characteristics both geographically and ecologically, namely the water area is a
semi-closed type, because it is surrounded by a group of islands, both large and
small islands. Karimunjawa waters will be greatly influenced by the direction,
speed and pattern of currents as well as the characteristics of the waves that
occur at that time. This study aims to determine the pattern of surface current
movement with a two-dimensional model approach in Nyamuk Waters,
Karimunjawa. The current movement pattern is obtained based on the 2D
hydrodynamic approach model. Verification of the suitability of the model is
carried out by comparing the results of field measurements carried out on
October 23 - October 26, 2021. The flow measurement is carried out using a
quantitative descriptive method. The results showed that the maximum current
velocity was 0.056 m/s in the direction of 66° and the minimum current was 0.001
in the direction of 38° with a tidal current characteristic of 51.44%. Tides
Nyamuk waters, Karimunjawa single tidal type. The simulation results using a 2D
hydrodynamics approach describe the direction of current movement that tends to
be alternating due to the dominance of tidal currents with an average speed of
0.013 m/s. At high tide, the current pattern moves from North to Southwest to
meet Currents from South to Northeast and experiences a deflection around
Nyamuk Island to the West. At low tide, the current pattern moves towards the
Southwest.
Keywords: Current Pattern, Tide, Nyamuk Island, 2D Hydrodynamics

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