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Acoustic Doppler Technology for Streamflow Data Collection

Acoustic Doppler Technology for Streamflow Data Collection. Don Hayes Richmond, Va. History. Vane Electro-magnetic Velocity Meter Acoustic Velocity Meter Acoustic Doppler Current Profilers. A coustic D oppler C urrent P rofilers. ADCP Applications. Instantaneous Discharge Measurement

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Acoustic Doppler Technology for Streamflow Data Collection

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  1. Acoustic Doppler Technology for Streamflow Data Collection Don Hayes Richmond, Va.

  2. History • Vane • Electro-magnetic Velocity Meter • Acoustic Velocity Meter • Acoustic Doppler Current Profilers

  3. Acoustic Doppler Current Profilers

  4. ADCP Applications • Instantaneous Discharge Measurement • Continuous Measurement—fixed mount • Hydrographic Survey • Calibrate and Validate Two-Dimensional Hydrodynamic Models • Estimating Sediment Concentrations Using Acoustic Backscatter

  5. Why do people want to use ADCP’s? • More accurate measurements • Better science (model calibration, water quality studies, etc.) • Safety and Efficiency

  6. Theory of DischargeMeasurements

  7. Conventional Discharge Measurement Width Velocity Depth

  8. Acoustic Profiler Discharge Measurement

  9. Measured and Unmeasured Areas Top estimate Triangular Shore estimate Measured Vertical Shore estimate Bottom estimate

  10. It is not magicQuality Assurance is important

  11. Progression of ADCP Use

  12. Catamaran design Aluminum frame Wireless modems Indiana’s Original Tethered Boat Electronics box Handle Foam floats ADCP

  13. OceanScience RiverBoat ADCP • Cost is ~$2,500. Comes with ADCP cable and radio/power connectors • Can be adapted to other profilers (SonTek) • 47 purchased by USGS Slot for rudder

  14. Tennessee Tethered Boat Cost: < $600 US

  15. Nortek BoogieDopp • Integrated radio modem interface • Deployed from “boogie board” • Discharge computation software runs on WinCE (PocketPC) • Discharge is computed in real time, post-processing can be done at the office (review of data, velocity profiles)

  16. Remote Controlled Boat Prototype running at 18 ft/s

  17. SonTek FlowTracker • Keypad • LED display • 2/4 MB recorder • Similar to Aquacalc • Measurements stored as binary file (*.wad)

  18. Questions?

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