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      Karakterisasi Akustik Sedimen Permukaan Dasar Laut menggunakan Seismik Saluran Tunggal di Perairan Bengkalis Utara.

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      Date
      2025
      Author
      Ginting, Alemina Hanifah
      Manik, Henry Munandar
      Setyanto, Agus
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      Abstract
      Penelitian ini bertujuan untuk mengidentifikasi karakteristik akustik sedimen permukaan di Perairan Bengkalis Utara dengan menggunakan metode seismik saluran tunggal. Data yang digunakan terdiri dari enam lintasan seismik dan 12 titik grab sampler. Pengolahan data meliputi bandpass filter, automatic gain control, dan dekonvolusi sparse spike menggunakan perangkat lunak Seisee dan Matlab untuk menghasilkan visualisasi lintasan 2D dan mendapat nilai koefisien refleksi sedimen. Hasil menunjukkan, pada lintasan utara-selatan, kedalaman substrat dasar perairan berada di rentang kedalaman 6.7 meter hingga 27.2 meter, untuk lintasan barat-timur, rentang kedalaman substrat dasar perairan berada di kedalaman 7.1 meter hingga 46.5 meter. Hasil analisis sedimen menunjukkan adanya variasi pola reflektor dan ketebalan lapisan sedimen di lokasi studi. Koefisien refleksi permukaan sedimen berada pada kisaran 0.191 hingga 0.291, mengindikasikan adanya sedimen berjenis lanau dari tingkat sedang sampai sangat kasar.
       
      This study aims to identify the acoustic characteristics of surfacial sediments in North Bengkalis Waters using the single channel seismic reflection method. The data used consisted of six seismic trajectories and 12 grab sampler points. Data processing includes bandpass filter, automatic gain control, and sparse spike deconvolution using Seisee and Matlab software to produce 2D trajectory visualization and obtain sediment reflection coefficient values. The results show that in the north-south trajectory, the depth of the water bottom substrate is in the depth range of 6.7 meters to 27.2 meters, for the west-east trajectory, the depth range of the water bottom substrate is in the depth of 7.1 meters to 46.5 meters. Sediment analysis results show variations in reflector patterns and thickness of the sediment layer at the study site. The sediment surface acoustic reflection coefficient is in the range of 0.191 to 0.291, indicating the presence of silt-type sediments from medium to very coarse grades.
       
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      http://repository.ipb.ac.id/handle/123456789/170869
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      • UT - Marine Science And Technology [2093]

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      Copyright © 2020 Library of IPB University
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      Contact Us | Send Feedback
      Indonesia DSpace Group 
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      Universitas Jember Digital Repository