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Deployment Concepts DVS

DOPPLER VOLUME SAMPLER (DVS) DATA RESULTS HIGH SPATIAL/TEMPORAL RESOLUTION SHORT RANGE PROFILING . Subsurface. Bottom. Surface. ADCP. DVS. ADCP. DVS. DVS. DVS. DVS. ADCP. DVS. DVS. Images modified from Bill Johns, RSMAS. Deployment Concepts DVS. NOAA .

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Deployment Concepts DVS

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  1. DOPPLER VOLUME SAMPLER(DVS) DATA RESULTSHIGH SPATIAL/TEMPORAL RESOLUTION SHORT RANGE PROFILING

  2. Subsurface Bottom Surface ADCP DVS ADCP DVS DVS DVS DVS ADCP DVS DVS Images modified from Bill Johns, RSMAS Deployment Concepts DVS

  3. NOAA • 2007 Test Deployment off of Hawaii, USA • 2007 Deployment in Puget Sound • Results originally presented and published by Patricia Plimpton of PMEL/NOAA/US Dept of Commerce and Jerry Mullison of RDI at Oceanology International March 2008

  4. Hawaii test deployment • Factory defaults • Five 50cm bins, first centered at 55cm • A one second 14 ping ensemble every 10 minutes • 10 minute inductive polling 4800m depth

  5. Hawaii 7m depth current meters

  6. Hawaii 35m current meters

  7. Hawaii temperature data

  8. Hawaii Conclusions • Setup of 14 pings taken in one second every ten minutes led to noisy current measurements and further averaging was required to do comparisonNOAA adjusted setup for future deployments will have longer averages • Velocity direction change ties to the remixing of the upper water column seen in the temperature plots • Temperature measurements are reasonable for the mixed layer environment

  9. Puget Sound Subsurface Mooring • Five 50 cm bins, first centered at 152 cm • DVS at 140m averaged 840 ping in 60 seconds every 10 minutes • DVS at 149m averaged 840 ping in 120 seconds every 10 minutes

  10. Puget SoundCurrents

  11. Puget SoundCurrents

  12. Puget Sound Instrument Comparison ~142m depth DVS (bin 1) vs Sentinel (y – x) SEN = -7.30 + 1.06xDVS SEN = -0.04 + 1.00xDVS DVS (bin 1) vs Argonaut (y – x) ARG = -6.66 + 1.05xDVS ARG = -0.08 + 1.01xDVS

  13. Puget Sound DVS: Bin to Bin Speed Differences

  14. Puget Sound DVS: Correlation and Intensity

  15. Puget Sound DVS: Correlation and % Data Return

  16. Puget Sound temperature data

  17. Puget Sound temperature data

  18. Puget Sound Conclusions • Current measurements match well with other instruments • DVS OEM SBE38 temperature sensor matched well with the reference instruments • Range of ~2-3m matched expected typical profiling range;

  19. BIO DVS Deployment • Department of Fisheries and Oceans (DFO) Bedford Institute of Oceanography, (BIO) Test and Evaluation of the Doppler Volume Sampler (DVS) • BIO performs initial test in early 2008 results presented at IEEE Current Meter Conference Mar08 • BIO performs a second deployment in Summer 2008 preliminary results shown here pending BIO’s publication

  20. Mooring Location and Setup

  21. Data Results RDI WH 300kHz ADCP Aanderaa RCM8 Data Courtesy: - Murray Scotney BIO Dept. Fisheries & Oceans Canada - Aanderaa Industries

  22. Data Results RDI WH 300kHz ADCP Aanderaa SeaGuard Data Courtesy: - Murray Scotney BIO Dept. Fisheries & Oceans Canada - Aanderaa Industries

  23. Data Results RDI WH 300kHz ADCP RDI DVS ADCP Aanderaa SeaGuard CM Data Courtesy: - Murray Scotney BIO Dept. Fisheries & Oceans Canada - Aanderaa Industries

  24. Contacts Main Office: Teledyne RD Instruments, Inc. 14020 Stowe Drive Poway, CA 92064 Main: +1-858-842-2600 www.rdinstruments.com European Office: Teledyne RDI Europe 5 Avenue Hector Pintus La Gaude, France Main: +33-492-110-930 China Office: Teledyne RD Technologies: 1206 Dongfang Road, Pu Dong Shanghai 20122 China Main: +86-215-830-6939 UK Representative: Andy Smith Saderet Ltd.The Old Parsonage St. Judes Isle of Man British Isles IM7 2EW +44 (0)1624 880366 andy@saderet.co.ukwww.saderet.co.uk

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