The Value of Acoustic Backscattering in Determining the Integration Thickness of the Seabed in Yos Sudarso Bay Papua
A considerable amount of research has already been conducted into the nature of water on the ocean floor/seabed, ranging from mapping of the seabed, volume backscattering strength (SV) of acoustics on the seabed, classification of the seabed, besides the relationship between the ocean floor and the biota above it with which it interacts. The Yos Sudarso Bay, Jayapura Papua, is a bay with a seabed which faces the floor of the Pacific Ocean and also forms the estuary of the river Anafre which contributes particles that settle on the seabed. This research aimed to collect data in order to understand differences in the integration of water thickness at 0.2 m and 0.5 m besides differences in the types of the substrate based on the results of SV. Data was collected using a single beam echosounder. The acoustic data were collected at 11 stations. The result is interval of value of SV ranged from -37.81dB to -15.62 dB (at the integration of 0.2 m) up to -15.07dB (at the integration of 0.5 m). The value of SV from the gravel was higher compared to the values found in the coarse sand, fine sand, mud mixed with sand or the pure mud. The lowest value of SV was found in the mud substrate. Results showed that thickness integration yielded different results when tested at 0.2 m and 0.5 m on the seabed. Furthermore, it was found that different types of substrate.
Biffard, B. R., Preston, J. M., & Chapman, N. R. (2007, September). Acoustic classification with single-beam echosounders: Processing methods and theory for isolating effects of the seabed on echoes. In OCEANS 2007 (pp. 1-8). IEEE.
Ryan, D. A., Brooke, B. P., Collins, L. B., Kendrick, G. A., Baxter, K. J., Bickers, A. N., ... & Pattiaratchi, C. B. (2007). The influence of geomorphology and sedimentary processes on shallow-water benthic habitat distribution: Esperance Bay, Western Australia. Estuarine, Coastal and Shelf Science, 72(1-2), 379-386.
Ferrini, V. L., & Flood, R. D. (2006). The effects of fine-scale surface roughness and grain size on 300 kHz multibeam backscatter intensity in sandy marine sedimentary environments. Marine Geology, 228(1-4), 153-172.
Hamuna, B., Pujiyati, S., Natih, N. M. N., & Dimara, L. (2018). ACOUSTICS BACKSCATTERING ANALYSIS TO CLASSIFICATION AND MAPPING OF SEABED SUBSTRATE IN YOS SUDARSO BAY, JAYAPURA CITY. JURNAL ILMU DAN TEKNOLOGI KELAUTAN TROPIS, 10(2), 291-300.
Pujiyati, S. (2008). Pendekatan metode hidroakustik untuk analisis keterkaitan antara tipe substrat dasar perairan dengan komunitas ikan demersal. Bogor: Institut Pertanian Bogor.
Pujiyati, S., Hartati, S., & Priyono, W. (2010). 4teffects of Grain Size, Roughness, and Hardness of Sea Floor on Back Scattering Value Based on Hydroacoustic Detection. Jurnal Ilmu dan Teknologi Kelautan Tropis, 2(1).
Tang, Q., Lei, N., Li, J., Wu, Y., & Zhou, X. (2015). Seabed mixed sediment classification with multi-beam echo sounder backscatter data in Jiaozhou Bay. Marine Georesources & Geotechnology, 33(1), 1-11.
Sari, A., & Dahlan, D. (2015). Komposisi jenis dan tutupan lamun di perairan teluk yos sudarso Kota Jayapura. The Journal of Fisheries Development, 2(1), 1-8.
Penrose, J. D., Siwabessy, P. J. W., Gavrilov, A., Parnum, I., Hamilton, L. J., Bickers, A., ... & Kennedy, P. (2005). Acoustic techniques for seabed classification. Cooperative Research Centre for Coastal Zone Estuary and Waterway Management. Technical Report 32.
Lubis, M. Z., Pujiyati, S., Prasetyo, B. A., & Choanji, T. (2019). Bathymetry Mapping Using Underwater Acoustic Technology. Journal of Geoscience, Engineering, Environment, and Technology, 4(2), 135-138.
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