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Advances in Acoustics and Vibration
Volume 2017, Article ID 4890421, 14 pages
https://doi.org/10.1155/2017/4890421
Research Article

Quantification and Analysis of Suspended Sediments Concentration Using Mobile and Static Acoustic Doppler Current Profiler Instruments

1Graduate School of Marine Technology, PMDSU Batch II, Bogor Agricultural University, IPB Darmaga Campus, Bogor 16680, Indonesia
2Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University, IPB Darmaga Campus, Bogor 16680, Indonesia
3Marine Geological Institute, Ministry of Energy and Mineral Resources of the Republic of Indonesia, Jl. Dr. Djunjunan No. 236, Bandung 40174, Indonesia

Correspondence should be addressed to Henry M. Manik; di.ca.bpi@kinamyrneh

Received 22 June 2017; Accepted 15 October 2017; Published 23 November 2017

Academic Editor: Kim M. Liew

Copyright © 2017 Angga Dwinovantyo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The application of Acoustic Doppler Current Profiler (ADCP) can be used not only for measuring ocean currents, but also for quantifying suspended sediment concentrations (SSC) from acoustic backscatter strength based on sonar principle. Suspended sediment has long been recognized as the largest sources of sea contaminant and must be considered as one of the important parameters in water quality of seawater. This research was to determine SSC from measured acoustic backscattered intensity of static and mobile ADCP. In this study, vertically mounted 400 kHz and 750 kHz static ADCP were deployed in Lembeh Strait, North Sulawesi. A mobile ADCP 307.2 kHz was also mounted on the boat and moved to the predefined cross-section, accordingly. The linear regression analysis of echo intensity measured by ADCP and by direct measurement methods showed that ADCP is a reliable method to measure SSC with correlation coefficient () 0.92. Higher SSC was observed in low water compared to that in high water and near port area compared to those in observed areas. All of this analysis showed that the combination of static and mobile ADCP methods produces reasonably good spatial and temporal data of SSC.