AMMARAZKHA, SHAHREZA GEDE (2023) ANALISIS KETEBALAN SEDIMEN MENGGUNAKAN SUB-BOTTOM PROFILER DI PERAIRAN BENOA, BALI (23dos217). Undergraduate thesis, Fakultas Perikanan dan Ilmu Kelautan.

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Abstract

ABSTRAK
(Shahreza Gede Ammarazkha.26050119140100. Analisis Ketebalan
Sedimen Menggunakan Sub-Bottom Profiler di Perairan Benoa, Bali. Sugeng Widada dan Dikdik S Mulyadi).
Perairan Benoa adalah tempat dengan kekayaan keanekaragaman hayati dan non hayati yang relatif tinggi dengan kondisi profil lapisan sedimen yang tentunya berbeda dengan kondisi profil lapisan sedimen di perairan lain. Sampai saat ini belum ada penelitian lebih lanjut terkait kondisi sedimen di bawah permukaan laut, maka dari itu diperlukan penelitian lebih lanjut. Penelitian dilakukan menggunakan Sub-Bottom Profiler untuk mengetahui ketebalan setiap lapisan sedimen dasar. Sampel sedimen dan data batimetri juga diperlukan untuk mengetahui jenis sedimen serta nilai kedalaman pada area penelitian. Raw data Sub-Bottom Profiler diolah menggunakan software SonarWIz7 sehingga dapat diperoleh peta isopach (peta ketebalan sedimen). Data batimetri diolah menggunakan software ArcGIS
yang hasilnya berupa peta kontur di area penelitian. Hasil penelitian menunjukkan bahwa Lapisan dasar permukaan laut (seafloor) diperoleh nilai kedalaman sebesar 12,67 m sampai dengan 22,97 meter dan lapisan horizon 1 memiliki kedalaman
sebesar 26,45 meter sampai dengan 47,43 meter. Nilai ketebalan antara lapisan sebesar 13,68 meter sampai dengan 24,35 meter. Persebaran sedimen di Perairan Benoa, Bali cukup beragam, dari 15 titik lokasi pengambilan sampel terdapat jenis sedimen berupa pasir, lumpur, karang.
Kata kunci : Ketebalan Sedimen, Sub-Bottom Profiler, SonarWiz7, Benoa, Bali.

ABSTRACT
(Shahreza Gede Ammarazkha.26050119140100. Sediment Thickness Analysis Using Sub-Botto Profiler in Benoa Waters, Bali. Sugeng Widada dan Dikdik S Mulyadi).
Benoa waters is an area with a relatively high non-biological richness and biodiversity, along with a profile of sediment layers that is definitely unique from other waters. There needs to be more research since there hasn't been any done on the state of sediment below sea level. The thickness of each sediment layer at the bottom was measured during the investigation using a Sub-Bottom Profiler. To ascertain the type of sediment and depth values in the study area, sediment samples and bathymetry data are also required. SonarWiz7 software was used to handle Sub-Bottom Profiler raw data in order to create isopach maps (sediment thickness maps). A contour map of the research area was produced as a consequence of processing the bathymetry data using ArcGIS software. According to the findings, the seafloor is between 12.67 and 22.97 meters deep, while the first layer horizon is between 26.45 and 47.43 meters deep. Between-layer thickness measurements varied from 13.68 meters to 24.35 meters. Benoa Waters, Bali has a wide variety of sediment types, including coral, mud, and sand, which has been discovered at 15
sampling locations.
Keywords : Sediment Thickness, Sub-Bottom Profiler, SonarWiz7, Benoa, Bali.

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