Using an acoustic Doppler current profiler in a small river

Gunawan, Budi; Sterling, Mark; Knight, Donald W.

doi:10.1111/j.1747-6593.2009.00170.x

Cited by 31 publications

(20 citation statements)

References 27 publications

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“…The discharge correction factors were evaluated using discharge data derived using ADCP. The discharges worked out from ADCP was initially checked with those measured by flow gauges in similar water depths and the error was within AE 5% (Gunawan et al, 2009). Figure 12 shows the discharge correction factors at three sections.…”

Section: Discharge Correction Factor Methodsmentioning

confidence: 99%

Discharge estimation in small irregular river using LSPIV

Xin

Shiono

Chandler

et al. 2010

Proceedings of the Institution of Civil Engineers - Water Manag

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This paper reports on an estimation method used to quantify discharge in the small irregular channel of the River Blackwater, using large-scale particle image velocimetry (LSPIV). The test reach (250 m × 60 m) consists of relatively straight and multiple meander channels, with a bankfull depth of 0·90 m and a base width of 4·25 m. Water surface velocities were measured by LSPIV at three sections along the river. Acoustic Doppler velocimeter (ADV) was also used on two occasions to measure velocity profiles for the validation of water surface velocities of LSPIV. In addition to this field work, velocity data derived from a 1:5 physical model of the river were available to compare with the field data. A comparison between the LSPIV data and ADV data was made and agreement was confirmed. The discharge correction factor method was suggested to estimate the discharge in the river. Discharge correction factors of 0·90–1·05 and 1·10–1·15 were proposed for inbank and overbank flow conditions respectively.

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Section: Discharge Correction Factor Methodsmentioning

confidence: 99%

Discharge estimation in small irregular river using LSPIV

Xin

Shiono

Chandler

et al. 2010

Proceedings of the Institution of Civil Engineers - Water Manag

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“…ADCPs have been used to characterize mean velocity and turbulence intensity in rivers (Lemmin & Rolland 1997;Barua & Rahman 1998;Muste et al 2004a;Muste et al 2004b;Le Coz et al 2007;Stone and Hotchkiss 2007;Gunawan et al 2010a), oceans/tidal channels (Lohrmann et al 1990;Stacey et al 1999;Cheng et al 2000;Luznik et al 2007;Epler et al 2010;Thomson et al 2010) and laboratories (Nystrom et al 2007). ADCPs have also been used for measuring secondary current (Dinehart & Burau 2005a;Szupiany et al 2007;Gunawan et al 2010b;Gunawan et al 2010b), bed shear stress (Rennie et al 2002;Rennie & Church 2007;Sime et al 2007), dispersion coefficient (Carr & Rehmann 2007), sediment transports (Holmes & Garcia 2002;Dinehart & Burau 2005b;Merckelbach 2006;Klein 2003) and tidal flux (Turnipseed 2002).…”

Section: Acoustic Doppler Current Profiler Methodsmentioning

confidence: 99%

Ornl Adcp Post-Processing Guide and Matlab Algorithms for MHK Site Flow and Turbulence Analysis

Gunawan

Neary²

2011

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“…Despite their simplicity and rapidity, a certain amount of averaging is necessary to reduce errors present in the recorded data (e.g., Gunawan et al 2010). Measuring at fixed locations over long time intervals or averaging data from repeated transects are usually recommended to accurately characterize the mean velocity distributions with ADCPs (Muste et al 2004a(Muste et al , 2004bSzupiany et al 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Frequency differences (i.e., Doppler shifts) between emitted and received sound pulses at the transducers are measured, which arise from the reflection of the transmitted pulses on small, suspended particles moving with the water. They are used to obtain the speed of water at a variety of depth cells, or bins, within the water column (Muste et al 2004b;Kostaschuk et al 2005;Gunawan et al 2010;Rennie and Church 2010). Due to their ease of use and versatility, ADCPs have been increasingly used over the last two decades in systems ranging from small rivers to shelf seas (Howarth and Proctor 1992;Gunawan et al 2010), thus being favoured over conventional current measurement techniques.…”

mentioning

confidence: 99%

“…They are used to obtain the speed of water at a variety of depth cells, or bins, within the water column (Muste et al 2004b;Kostaschuk et al 2005;Gunawan et al 2010;Rennie and Church 2010). Due to their ease of use and versatility, ADCPs have been increasingly used over the last two decades in systems ranging from small rivers to shelf seas (Howarth and Proctor 1992;Gunawan et al 2010), thus being favoured over conventional current measurement techniques. Their applications have expanded beyond the simple measurement of velocity fields, to river bathymetry and discharge monitoring (Simpson 2001;Yorke and Oberg 2002), the investigation of sediment transport (Kostaschuk et al 2005;Rennie and Church 2010), secondary flow (Dinehart and Burau 2005a;Szupiany et al 2007), shear stress (Lu and Lueck 1999a;Sime et al 2007), turbulence (Lu and Lueck 1999b;Nystrom et al 2007;Stone and Hotchkiss 2007), habitat quality (Shields and Rigby 2005), gravity currents (García et al 2007), and the validation of numerical models (Morin 2001).…”

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confidence: 99%

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2014

Limnology & Ocean Methods

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Direct measurement of water levels and velocities can provide fundamental insight into the hydrodynamics of tidal rivers and estuaries. They represent a reliable source of data for the verification and calibration of numerical models. Such knowledge is also crucial for navigation, environmental assessments, and coastal protection and development. To reach a high level of description, measured data must cover a wide range of spatial and temporal variability. Long-term monitoring stations provide high-frequency records, but they are usually limited in number, thereby limiting their ability to represent spatial features of the flow. Conversely, satellitebased measurements provide synoptic snapshots of a region, but they are limited in their temporal resolution and interpretation of the velocity field. Boat surveys remain the best compromise between fixed measurements and remote sensing observations for the characterization of nonstationary hydrodynamic fields. They can ensure both spatial and temporal coverage, provided that the sampling strategy and resolution is adapted to the size and rate of evolution of the structures measured (e.g., Rixen et al. 2001).In the field, meeting these requirements is often a challenge, as both the instrumentation and survey strategy must meet the criteria and constraints set by the users (e.g., sampling requirements, finite measurement time, and resources) and by the environment (e.g., presence of tides, size of the river). This has been facilitated in part by the development of new technologies over the last decades, including acoustic Doppler current profilers (ADCP) for water velocity meaQuantifying lateral and intratidal variability in water level and velocity in a tide-dominated river using combined RTK GPS and ADCP measurements AbstractCross-sectional gradients in water levels and velocities play a determining role in the circulation dynamics of tidal rivers and estuaries. Documenting and analyzing their variability throughout a tidal cycle require observations with high spatial and temporal resolution. A survey strategy and a data analysis procedure have been designed to obtain continuous and synoptic water level and velocity fields over a tidal cycle, along 13 cross-sections of the St. Lawrence fluvial estuary dominated by large tidal ranges. The method combines both RTK GPS and ADCP technologies for the simultaneous measurement of water levels and velocities along repeated boat transects, allowing fast data acquisition over wide river sections and under rapidly changing conditions. The reconstruction of continuous and synoptic fields is made by interpolation. Simplifying assumptions about data stationarity and/or homogeneity are avoided by adapting the interpolation procedures to the shape and distribution of the underlying data in a space-time reference frame, thus minimizing distortion in the reconstructed quantities. The capabilities and limitations of the method are assessed through error computations and comparisons with alternate data analysis methods and complement...

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Using an acoustic Doppler current profiler in a small river

Cited by 31 publications

References 27 publications

Discharge estimation in small irregular river using LSPIV

Discharge estimation in small irregular river using LSPIV

Ornl Adcp Post-Processing Guide and Matlab Algorithms for MHK Site Flow and Turbulence Analysis

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