Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand...
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Transcript of Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand...
![Page 1: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/1.jpg)
Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks
William Fowler
MSc. Candidate Environmental Science
Memorial University of Newfoundland
![Page 2: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/2.jpg)
Large Gorgonian Distribution
Coldwater Coral off Newfoundland and Labrador, WWF 2007
![Page 3: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/3.jpg)
Characterization of Local Current Regime Corals occurring on the
bottom in deep water are located in the benthic boundary layer
Layer extends above seafloor anywhere from 5-20 meters
Dr. Len Zedel / Dr. Evan Edinger, ROPOS 2007
![Page 4: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/4.jpg)
Boundary Layers
Idealized boundary layer
Bottom drag, sea floor roughness important factor
NASA 2008
![Page 5: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/5.jpg)
Methods
ROPOS/Hudson 2007 Cruise
Survey of deepwater coral
Multiple sites along slope of continental shelf
2008 Dr. Evan Edinger
![Page 6: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/6.jpg)
ADCP
![Page 7: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/7.jpg)
Profiler 1: Area without Coral
Dr. Len Zedel / Dr. Evan Edinger, ROPOS 2007
![Page 8: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/8.jpg)
Current Profiler 2: Coral Thicket
Dr. Len Zedel / Dr. Evan Edinger, ROPOS 2007
![Page 9: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/9.jpg)
Deployment Parameters
Depth 700 meters 1 profile every 30 seconds Uncertainty in velocity time series ~ 0.5 cm/s Profiling over 4 meters 1 meter cell size
![Page 10: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/10.jpg)
Location of ADCP in Coral Thicket (site 2)
![Page 11: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/11.jpg)
ROPOS Transact and location of coral
![Page 12: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/12.jpg)
Mean normalized velocity profile
![Page 13: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/13.jpg)
Comparison of Site 1 and 2
![Page 14: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/14.jpg)
Directional Velocity Profile: Inst. 1
![Page 15: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/15.jpg)
Coral Thicket varies relative to site 1
![Page 16: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/16.jpg)
Directional Velocity Profile w/ time series
![Page 17: Boundary Layer Velocity Structure in a Coldwater Coral Area of Haddock Channel, Southwest Grand Banks William Fowler MSc. Candidate Environmental Science.](https://reader035.fdocuments.us/reader035/viewer/2022062309/5697c0211a28abf838cd2a2a/html5/thumbnails/17.jpg)
Directional subplots Inst. 1 shown (use inst. 2 plots in presentation)