Miftachurrozaq, Izhad (2017) Pemodelan Pola Sebaran Sedimen Untuk Analisis Dampak Reklamasi Terhadap Pendangkalan Di Teluk Benoa. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Di tahun 2014, pemerintah merencanakan mega proyek Revitalisasi Teluk Benoa yang sampai saat ini masih menjadi konflik karena adanya pihak pro dan kontra. Proyek tersebut akan melakukan pembangunan pulau-pulau baru di perairan Teluk Benoa dengan melakukan reklamasi. Kegiatan reklamasi pada suatu perairan dapat berpotensi terjadinya proses sedimentasi, sebab pulau-pulau hasil reklamasi dapat menghambat aliran material sedimen sehingga mengakibatkan pengendapan. Proses sedimentasi dipengaruhi oleh kondisi hidrodinamika di perarian tersebut. Pergerakan aliran sedimen akan mengikuti dari pergerakan pola arusnya. Pemodelan hidrodinamika merupakan salah satu metode pendekatan untuk mengetahui kondisi hidrodinamik pada suatu perairan. Penelitian ini melakukan pemodelan arus serta sebaran sedimen di perairan Teluk Benoa pada saat pra reklamasi dan paska reklamasi untuk mengetahui dampak reklamasi terhadap pendangkalan di Teluk Benoa. Hasil pemodelan menunjukkan adanya peningkatan laju deposisi dan laju erosi sedimen. Besarnya nilai laju deposisi menunjukkan besarnya potensi terjadinya deposit sedimen (sedimentasi). Berdasarkan 10 titik sampel yang diambil menurut besarnya nilai laju deposisi, rerata nilai laju deposisi terbesar yaitu pada titik 1 dengan nilai laju deposisi 3,49 x 10-4 kg/m2/s yang terletak pada celah sisi antara pulau G dan F. Rerata nilai total akumulasi deposit bersih sedimen terbesar mencapai 9335,21 g/m2 yang berada di antara sisi pulau A dan E, sehingga menyebabkan pendangkalan yang ditunjukkan dengan meningkatnya ketebalan lapisan dasar mencapai 15,2 cm.
========================================================================================================================In 2014, the government plans a mega project of Benoa Bay Revitalization which is still a conflict because of the pro and contra. The project will undertake the construction of new islands in the waters of Benoa Bay by reclamation. Reclamation activities can lead to an increasingly rapid sedimentation process. Reclaimed islands can inhibit the flow of sedimentary material resulting in precipitation. Sedimentation process is influenced by hydrodynamic conditions in that waters. The movement of the sedimentary stream will follow from the movement of the current pattern. Hydrodynamic modeling is one of approach method to know hydrodynamic condition in a waters. This research modeled the flow and distribution of sediments in the waters of Benoa Bay at the time of pre-reclamation and post-reclamation to determine the impact of reclamation on siltation in the Benoa Bay. The modeling results show an increase in sediment deposition rate and sediment erosion rate. The value of the deposition rate indicates the potential for sediment deposit (sedimentation). Based on the 10 sample points taken according to the rate of deposition, the average value of the largest deposition rate is on the point 1 with the deposition rate of 3.49 x 10-4 kg/m2/s, that located on the gap between the islands G and F. The average value of the largest total net sediment deposit accumulation reached 9335.21 g m2 which lies between the islands of A and E, thus causing silting as indicated by increasing bed thickness of 15.2 cm.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Keywords—Reclamation, Sedimentation, Hydrodinamic, Benoa Bay |
| Subjects: | G Geography. Anthropology. Recreation > GC Oceanography |
| Divisions: | Faculty of Civil Engineering and Planning > Geomatics Engineering > 29202-(S1) Undergraduate Thesis |
| Depositing User: | Izhad Miftachurrozaq . |
| Date Deposited: | 31 Aug 2017 02:51 |
| Last Modified: | 05 Mar 2019 07:01 |
| URI: | http://repository.its.ac.id/id/eprint/43333 |
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