Estimation of Suspended Sediment Concentrations with Adcp in Danube River

Open access

Abstract

An estimation procedure for suspended sediment concentrations based on the intensity of backscattered sound of acoustic Doppler current profilers (ADCP) is introduced in this paper. Based on detailed moving and fixed boat ADCP measurements with concurrent sediment sampling, we have successfully calibrated the estimation method for a reach of River Danube in Hungary, characterized by significant suspended sediment transport. The effect of measurement uncertainty and various data filtering on sediment load determination is also analyzed and quantified. Some of the physical model parameters describing the propagation of sound in water are estimated based on known empirical formulas, while other parameters are derived from measured. Regression analysis is used to obtain a relationship between the intensity of backscattered sound and sediment concentrations. The empirical relationship has been then used to estimate the suspended sediment concentrations from the ADCP data collected in fixed and moving boat measurement operation mode, along verticals and path-lines, respectively. We show that while some measurement uncertainty is inherent to the acoustic Doppler principle, it is further enhanced by the complexity of the near-bottom sediment-laden flow. This uncertainty has then a significant effect on the local sediment load estimation. In turn, reasonable smoothing of raw velocity and backscatter intensity data shows insignificant impact on cross-sectional sediment load estimation.

Deines, K.L., 1999. Backscatter estimation using broadband acoustic Doppler current profilers. Proceedings of the IEEE Sixth Working Conference on Current Measurement, San Diego, CA, March 11-13, 1999, 249-253.

DRL Software Ltd, 2003. DRL-Sediview software user manual V3, DRL Software Ltd.

Downing, A., Thorne, P.D., Vincent, C.E., 1995. Backscattering from a suspension in the near field of a piston transducer. Journal of the Acoustical Society of America, 97, 1614- -1920.

Gartner, J.W., 2004. Estimating suspended solids concentrations from backscatter intensity measured by acoustic Doppler current profiler in San Francisco Bay, California. Marine Geology, 211, 169-187.

Guerrero, M., Szupiany, R.N., Amsler, M., 2011. Comparison of acoustic backscattering techniques for suspended sediments investigation. Flow Measurement and Instrumentation, 22, 5, 392-401.

Guerrero, M., Rüther, N., Szupiany, R.N., 2012. Laboratory validation of acoustic Doppler current profiler (ADCP) techniques for suspended sediment investigations. Flow Measurement and Instrumentation, 23, 1, 40-48.

Kim, Y.H., Voulgaris, G., 2003. Estimation of suspended sediment concentration in estuarine environments using acoustic backscatter from an ADCP. In: Proceedings of the International Conference on Coastal Sediments (Clearwater Beach, Florida, USA).

Kostaschuk, R., Best, J., Villard, P., Peakall, J., Franklin, M., 2005. Measuring flow velocity and sediment transport with an acoustic Doppler current profiler. Geomorphology, 68, 25-37.

Reichel, G., Nachtnebel, H.P., 1994. Suspended sediment monitoring in a fluvial environment: advantages and limitations applying an acoustic Doppler current profiler. Water Resources Research, 28, 4, 751-761.

Schulkin, M., Marsh, H.W., 1962. Sound absorption in sea water. Journal of the Acoustical Society of America, 34(6), 864-865.

Tamás, E., Baranya, S., 2008. SEDIBAL - Sediment Balance for the Danube River. Interim Report. Hungary. UNESCO/Universität für Bodenkultur Wien.

Thevenot, M.M., Prickett, T.L., Kraus, N.C. 1992. Tylers Beach, Virginia, dredged material plume monitoring project 27 September to 4 October 1991. Dredging Research Program Technical Report DRP-92-7, US Army Corps of Engineers, Washington, DC, pp. 204.

Urick, R.J., 1948. The absorption of sound in suspensions of irregular particles. Journal of the Acoustical Society of America, 20(3), 283-289.

Urick, R.J., 1983. Principles of Underwater Sound. McGraw Hill, New York, pp. 384.

Wall, G.R., Nystrom, E.A., Litten, S., 2006. Use of an ADCP to compute suspended-sediment discharge in the tidal Hudson River, New York. US Geological Survey Scientifi

Journal of Hydrology and Hydromechanics

The Journal of Institute of Hydrology SAS Bratislava and Institute of Hydrodynamics CAS Prague

Journal Information


IMPACT FACTOR 2017: 1.714
5-year IMPACT FACTOR: 1.639



CiteScore 2017: 1.91

SCImago Journal Rank (SJR) 2017: 0.599
Source Normalized Impact per Paper (SNIP) 2017: 1.084

Cited By

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 405 363 27
PDF Downloads 237 222 22