Acoustic Doppler Current profiler measurements near a weir with fish pass: assessing solutions to compass errors, spatial data referencing and spatial flow heterogeneity

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dc.contributor.authorKriechbaumer, Thomas
dc.contributor.authorBlackburn, Kim
dc.contributor.authorEverard, Nick
dc.contributor.authorRivas Casado, Monica
dc.date.accessioned2016-08-16T10:16:30Z
dc.date.available2016-08-16T10:16:30Z
dc.date.issued2015-11-18
dc.description.abstractThere has been an increasing interest in the use of Acoustic Doppler Current Profilers (ADCPs) to characterise the hydraulic conditions near river engineering structures such as dams, fish passes and groins, as part of ecological and hydromorphological assessments. However, such ADCP applications can be limited by compass errors, obstructed view to navigation satellites, frequent loss of bottom tracking and spatially heterogeneous flow leading to erroneous water velocity measurements. This study addresses these limitations by (i) developing a heading sensor integration algorithm that corrects compass errors from magnetic interference, (ii) testing a Total Station based technique for spatial ADCP data referencing and (iii) evaluating a recently proposed data processing technique that reduces bias from spatial flow heterogeneity. The integration of these techniques on a radio control ADCP platform is illustrated downstream of a weir with fish pass on the River Severn, UK. The results show that each of the techniques can have a statistically significant effect on the estimated total water velocities and can strongly affect measures of vorticity. The obtained three-dimensional flow maps are suitable to describe the magnitude and orientation of the fish pass attraction flow in relation to competing flows and to highlight areas of increased vorticity.en_UK
dc.identifier.citationThomas Kriechbaumer, Kim Blackburn, Nick Everard and Monica Rivas Casado. Acoustic Doppler Current Profiler measurements near a weir with fish pass: assessing solutions to compass errors, spatial data referencing and spatial flow heterogeneity. June 2016, 47(3) pp591-605en_UK
dc.identifier.cris2448328
dc.identifier.issn1998-9563
dc.identifier.urihttp://dx.doi.org/10.2166/nh.2015.095
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/10314
dc.language.isoenen_UK
dc.rightsPublished by IWA. This is the Author Accepted Manuscript. This article may be used for personal use only. The final published version (version of record) is available online at http://dx.doi.org/10.2166/nh.2015.095 Please refer to any applicable publisher terms of use.
dc.titleAcoustic Doppler Current profiler measurements near a weir with fish pass: assessing solutions to compass errors, spatial data referencing and spatial flow heterogeneityen_UK
dc.typeArticleen_UK

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