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ADCP Acoustic Doppler Current Profiler
Morven Muilwijk2014
University of Bergen, Bjerknes Centre for Climate Research
![Page 2: ADCP Acoustic Doppler Current Profiler Morven Muilwijk 2014 University of Bergen, Bjerknes Centre for Climate Research](https://reader035.vdocuments.net/reader035/viewer/2022062314/56649e395503460f94b2a16f/html5/thumbnails/2.jpg)
What is an ADCP?
• Acoustic Doppler Current Profiler
Morven Muilwijk 2014
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The Doppler Shift
Morven Muilwijk 2014
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The Doppler Shift
Morven Muilwijk 2014
![Page 5: ADCP Acoustic Doppler Current Profiler Morven Muilwijk 2014 University of Bergen, Bjerknes Centre for Climate Research](https://reader035.vdocuments.net/reader035/viewer/2022062314/56649e395503460f94b2a16f/html5/thumbnails/5.jpg)
The Doppler Shift
Morven Muilwijk 2014
Speed of sound = frequency × wavelength
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The Doppler Shift
Morven Muilwijk 2014
![Page 7: ADCP Acoustic Doppler Current Profiler Morven Muilwijk 2014 University of Bergen, Bjerknes Centre for Climate Research](https://reader035.vdocuments.net/reader035/viewer/2022062314/56649e395503460f94b2a16f/html5/thumbnails/7.jpg)
Current profiling and 3D velocity measurements
4 Measurements at once:
1. Speed and direction
2. Bottom tracking
3. Height or range
4. Distribution of material (intensity)
Morven Muilwijk 2014
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Different types, different purposes
Morven Muilwijk 2014
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Different types, different purposes
Morven Muilwijk 2014
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Applications of the ADCP
• Oceanography• Vessel Traffic Safety in the Port & Harbor• Tidal currents observations • Efficient Seismic Survey Operations
Morven Muilwijk 2014
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Applications of the ADCP
Morven Muilwijk 2014
•Oil industry•ADCPs for renewable energy projects
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New York power plant
Morven Muilwijk 2014
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Different types of platforms
Morven Muilwijk 2014
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Examples of studies
• Measuring tidal currents in a sound
Morven Muilwijk 2014
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Examples of studies
• Measuring tidal currents in a sound
Morven Muilwijk 2014
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Advantages
• Easy to use and to make profiles • No moving parts• Small scales • Absolute speed of water• Measures columns up to 1000m
Morven Muilwijk 2014
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Disadvantages
• Barnacles and algea • Clear waters • Compromise between distance or precision • Bubbles in turbulent water• Battery power with
frequent pings
Morven Muilwijk 2014
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Good to know when working with ADCP’s
• Backscatter • Ping • Main Lobe• Blank zone• Ambiguity
Morven Muilwijk 2014
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ADCP Acoustic Doppler Current Profiler
Morven Muilwijk2014
University of Bergen, Bjerknes Centre for Climate Research