Estimation of Suspended Sediment Concentrations with Adcp in Danube River
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 cali...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Sciendo
2013-09-01
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| Series: | Journal of Hydrology and Hydromechanics |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/johh-2013-0030 |
| _version_ | 1819022428180840448 |
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| author | Baranya Sándor Józsa János |
| author_facet | Baranya Sándor Józsa János |
| author_sort | Baranya Sándor |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-21T04:22:50Z |
| format | Article |
| id | doaj.art-1d7f17aed2834d8e80fa17f1c9ab5108 |
| institution | Directory Open Access Journal |
| issn | 0042-790X |
| language | English |
| last_indexed | 2024-12-21T04:22:50Z |
| publishDate | 2013-09-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Journal of Hydrology and Hydromechanics |
| spelling | doaj.art-1d7f17aed2834d8e80fa17f1c9ab51082022-12-21T19:16:07ZengSciendoJournal of Hydrology and Hydromechanics0042-790X2013-09-0161323224010.2478/johh-2013-0030Estimation of Suspended Sediment Concentrations with Adcp in Danube RiverBaranya Sándor0Józsa János1Water Management Research Group of the Hungarian Academy of Sciences, Department of Hydraulic and Water Resources Engineering, Budapest University of Technology and Economics, Muegyetem rkp. 3, H-1111, Budapest, HungaryWater Management Research Group of the Hungarian Academy of Sciences, Department of Hydraulic and Water Resources Engineering, Budapest University of Technology and Economics, Muegyetem rkp. 3, H-1111, Budapest, HungaryAn 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.https://doi.org/10.2478/johh-2013-0030suspended sediment concentrationadcpdanube |
| spellingShingle | Baranya Sándor Józsa János Estimation of Suspended Sediment Concentrations with Adcp in Danube River Journal of Hydrology and Hydromechanics suspended sediment concentration adcp danube |
| title | Estimation of Suspended Sediment Concentrations with Adcp in Danube River |
| title_full | Estimation of Suspended Sediment Concentrations with Adcp in Danube River |
| title_fullStr | Estimation of Suspended Sediment Concentrations with Adcp in Danube River |
| title_full_unstemmed | Estimation of Suspended Sediment Concentrations with Adcp in Danube River |
| title_short | Estimation of Suspended Sediment Concentrations with Adcp in Danube River |
| title_sort | estimation of suspended sediment concentrations with adcp in danube river |
| topic | suspended sediment concentration adcp danube |
| url | https://doi.org/10.2478/johh-2013-0030 |
| work_keys_str_mv | AT baranyasandor estimationofsuspendedsedimentconcentrationswithadcpindanuberiver AT jozsajanos estimationofsuspendedsedimentconcentrationswithadcpindanuberiver |