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ADCP: White Point Swash

ADCP: White Point Swash. Amanda Bettinger Lindsay Karpinski John Henry Francis Matt Dunsmore Nick Fischer MSCI 311 December 7, 2007. What is an ADCP. Acoustic Doppler Current Profiler

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ADCP: White Point Swash

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  1. ADCP: White Point Swash Amanda Bettinger Lindsay Karpinski John Henry Francis Matt Dunsmore Nick Fischer MSCI 311 December 7, 2007

  2. What is an ADCP • Acoustic Doppler Current Profiler • Measures wave and current velocities and direction through the specified water column using an acoustic signal. • Eularian system (measures at one point over time) Workhorse Sentinel ADCP

  3. Study Site: White Point Swash ADCP Location

  4. Study Site: White Point Swash ADCP Location

  5. ADCP Set up • Prior to the deployment the ADCP had to be configured in the set up software and loaded onto the machine. • The ADCP had to be tested prior to deployment to ensure that all function are working properly.

  6. ADCP configuration • Blanking distance: 0.15 m (15 cm) • Bin size: 0.05 m (5 cm) • Sampling Frequency: 1 Hz, every 5 mins • Deployed: 10/18/07 12:54 pm for 31 days • Pulse Coherent Mode (mode 11)

  7. ADCP Deployment Information • The ADCP was deployed in an aluminum frame approximately 0.5 m x 0.5 m held down by 2 lead weights approx 50 lbs each. • The frame was buried in slightly under 0.5 m of sediment, approximately ¾ of the frame was buried.

  8. Troubleshooting • The ADCP was originally deployed for a 3 day period for testing purposes. • Problems that were encountered include: • It was not in the proper mode • Bottom Tracking was needed to recognize the surface • The surface was not being recognized by the instrument • Rods were bend/ broken that may have caused movement

  9. Data Processing • The WinADCP program was used to export the data from the binary file to a convenient text file that can be loaded into Matlab.

  10. Profiles

  11. Data Analysis: Temperature and Depth

  12. Data Analysis: Magnitude and Direction of Velocities

  13. Data Analysis: Velocity Direction

  14. Further Analysis • Discharge rates can be calculated using the magnitude and direction of the velocity. • A similar procedure can be done to look at seasonal variability of the tidal influence and discharge rates.

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