Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5200
Title: Estimation of suspended sediment concentration in rivers using acoustic methods
Authors: Elçi, Şebnem
Aydın, Ramazan
Work, Paul A.
Elçi, Şebnem
Aydın, Ramazan
Keywords: Acoustic Doppler
Aegean
Multivariate analysis
Particle size
Suspended sediment concentration
Particle size
Issue Date: Jan-2009
Publisher: Springer Verlag
Source: Elçi, Ş., Aydın, R. and Work, P.A. (2009). Estimation of suspended sediment concentration in rivers using acoustic methods. Environmental Monitoring and Assessment, 159(1-4), 255-265. doi:10.1007/s10661-008-0627-5
Abstract: Acoustic Doppler current meters (ADV, ADCP, and ADP) are widely used in water systems to measure flow velocities and velocity profiles. Although these meters are designed for flow velocity measurements, they can also provide information defining the quantity of particulate matter in the water, after appropriate calibration. When an acoustic instrument is calibrated for a water system, no additional sensor is needed to measure suspended sediment concentration (SSC). This provides the simultaneous measurements of velocity and concentration required for most sediment transport studies. The performance of acoustic Doppler current meters for measuring SSC was investigated in different studies where signal-to-noise ratio (SNR) and suspended sediment concentration were related using different formulations. However, these studies were each limited to a single study site where neither the effect of particle size nor the effect of temperature was investigated. In this study, different parameters that affect the performance of an ADV for the prediction of SSC are investigated. In order to investigate the reliability of an ADV for SSC measurements in different environments, flow and SSC measurements were made in different streams located in the Aegean region of Turkey having different soil types. Soil samples were collected from all measuring stations and particle size analysis was conducted by mechanical means. Multivariate analysis was utilized to investigate the effect of soil type and water temperature on the measurements. Statistical analysis indicates that SNR readings ob tained from the ADV are affected by water temperature and particle size distribution of the soil, as expected, and a prediction model is presented relating SNR readings to SSC mea surements where both water temperature and sediment characteristics type are incorporated into the model. The coefficients of the suggested model were obtained using the multivariate anal ysis. Effect of high turbidity conditions on ADV performance was also investigated during and after rain events.
URI: http://dx.doi.org/10.1007/s10661-008-0627-5
http://hdl.handle.net/11147/5200
ISSN: 0167-6369
0167-6369
Appears in Collections:Civil Engineering / İnşaat Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Sürdürülebilir Yeşil Kampüs Koleksiyonu / Sustainable Green Campus Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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