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Impact of Acoustic Doppler Technology on Catchment Hydrology

Author(s): Daniel Wagenaar; Isaac Jones

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Keywords: Acoustic; Velocity; Sediment; Bathymetric; Water Cube

Abstract: The application of Acoustic Doppler instruments has grown significantly over the past decade from where it was originally introduced to hydrographic operations for the measurement of runoff in natural catchments to flood management in urban catchments such as the SMART tunnel project where it is accepted today as the primary method for instantaneous and continuous velocity measurements by most organizations. The scope of Acoustic Doppler instruments have expanded form the initial requirement of velocity measurements to the collection of parameters for determining the total suspended sediment load, bathymetric mapping and the development of hydrological and hydraulic models. The application of Acoustic Doppler Velocity Meters in sediment research to date has demonstrated the capability of the Son Tek SL Series in the continuous monitoring of both suspended sediment concentration and water velocity. Bathymetric surveys have become an increasing requirement for most catchment hydrology studies especially with the ability to combine data sets with Lidar or other digital elevation data products. Son Tek has developed a bathymetric survey package (Hydro Surveyor) that is based on the well-established River Surveyor platform. The combination of a bathymetric survey package with an Acoustic Doppler Current Profiler has enabled the collection of associated datasets with the standard bathymetry survey information such as horizontal and vertical velocity profiles. The ability to perform bathymetric surveys in combination with water velocity measurements makes the Hydro Surveyor an attractive and costeffective solution for model development such as prediction of oil or chemical spills on coastal environment. The expansion of the Acoustic Doppler instrumentation applications within the different facets of catchment hydrology is showcased in this presentation and highlights the versatility of the technology and the capability of Son Tek Acoustic Doppler instruments in flood management, sediment transport and bathymetric surveys for model development.

DOI:

Year: 2015

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