Identifikasi Fitur Dasar Laut Dan Sedimen Menggunakan Multibeam Echosounder (Studi Kasus : Pegunungan Bawah Laut Komba, Flores)

Badar, Mirza (2025) Identifikasi Fitur Dasar Laut Dan Sedimen Menggunakan Multibeam Echosounder (Studi Kasus : Pegunungan Bawah Laut Komba, Flores). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini membahas karakteristik morfologi dan indikasi sistem hidrotermal di wilayah Pegunungan Bawah Laut Komba yang terletak di Laut Flores, Indonesia. Analisis dilakukan
berdasarkan data batimetri resolusi tinggi, peta jenis sedimen dari backscatter Multibeam Echosounder, dan peta kelerengan. Hasil pemetaan menunjukkan dua struktur utama yaitu Gunung Ibu Komba dengan ketinggian puncak -858 m dan Gunung Abang Komba dengan puncak lebih dangkal pada -125 m dari permukaan laut. Wilayah ini memiliki kedalaman maksimum hingga -3342 m. Identifikasi fitur dasar laut mengungkap keberadaan punggungan tua, lembah-lembah sempit, tebing patahan, dan teras dasar laut, yang menandakan proses geodinamika aktif. Zona-zona lereng curam ditemukan mendominasi sisi tubuh gunung bawah laut, sementara lereng landai berkembang di sekitar dasar laut. Distribusi sedimen menunjukkan akumulasi material lunak pada lembah dan dataran rendah, sedangkan zona puncak dan lereng curam didominasi oleh substrat keras. Enam titik anomali reflektif teridentifikasi pada lereng timur laut Gunung Abang Komba, diduga sebagai lokasi ventilasi hidrotermal aktif yang berasosiasi dengan sistem patahan dan rekahan. Temuan ini
mendukung indikasi aktivitas vulkanik bawah laut yang masih berlangsung.
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This study discusses the morphological characteristics and indications of hydrothermal systems in the Komba Seamount region located in the Flores Sea, Indonesia. The analysis
was carried out based on high-resolution bathymetry data, sediment type maps from Multibeam backscatter, and slope maps. The mapping results show two main structures, namely Mount Ibu Komba with a peak height of -858 m and Mount Abang Komba with a shallower peak at -125 m above sea level. This area has a maximum depth of up to -3342 m. Identification of seabed features reveals the presence of old ridges, narrow valleys, fault cliffs, and seabed terraces, indicating active geodynamic processes. Steep slope zones are found to dominate the flanks of the seamount, while gentle slopes develop around the seabed. Sediment distribution shows accumulation of soft material in valleys and lowlands, while
the peak and steep slope zones are dominated by hard substrates. Six reflective anomaly points were identified on the northeastern slope of Mount Abang Komba, suspected to be
the location of active hydrothermal vents associated with fault and fracture systems. These findings support indications of ongoing submarine volcanic activity.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Fitur Dasar Laut, Multibeam Echosounder, Hambur Balik, Sedimen, Seafloor Features, Multibeam Echosounder, Backscatter, Sediment
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC187 Dredging
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Mirza Badar
Date Deposited:	25 Jul 2025 07:10
Last Modified:	25 Jul 2025 07:10
URI:	http://repository.its.ac.id/id/eprint/121559

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