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Laurentian Fan Moored Currents Data May 2006 – May 2007 Part of project “Current Statistics from Deep-Water Drifters and other Measurements in Atlantic.

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Presentation on theme: "Laurentian Fan Moored Currents Data May 2006 – May 2007 Part of project “Current Statistics from Deep-Water Drifters and other Measurements in Atlantic."— Presentation transcript:

1 Laurentian Fan Moored Currents Data May 2006 – May 2007 Part of project “Current Statistics from Deep-Water Drifters and other Measurements in Atlantic Slope Frontier Gas Areas ” Funded by Unconventional Gas Supply Program of the Canadian Climate Technology and Innovation Initiative (CCTII) Carried out by Fisheries and Ocean Canada (DFO), Bedford Institute of Oceanography Contact: John Loder ( ) or Yuri Geshelin ( ) John Loder and Yuri Geshelin - 13 June 2008

2 CCTII Moored Currents Data for Laurentian Fan 2000m 1975mCurrent Meter Previous (●) and CCTII (▲) Deployment Sites Example DFO/CCTII Mooring CCTII moorings on 1100 and 2000m isobaths from May 2006 to May 2007 RCM11 Current Meter at 25 m above bottom

3 Site LF-A: 44 45’N, ’W - 25 m above bottom in Water Depth of 1104 m

4 Site LF-B: ’N, ’W - 25 m above bottom in Water Depth of 2009 m

5 Comparison of Near-Bottom Currents Speeds at LF-A and LF-B

6 SiteInstrument Depth (m) Mean Speed (m/s) Max Speed (m/s) LF-A LF-B Statistics of Current Speed at the 2 Sites

7 Progressive Vector (Drift) Plots from Moored Currents Data LF-A (1100 m) : Drift of about 2 cm/s towards WSW (expected drift direction) LF-B (2000 m) : Drift of about 1 cm/s towards SSE - Weak current drift - Not understood why drift to SSE instead of SW (possibly a local topography effect) LF-A (1100 m) LF-B (2000 m)

8 Comparison with Currents Speeds in Other Areas Mean and Maximum Near-Bottom Current Speeds in 1 year records at Sites along the 1100-m and 2000-m isobaths SS= Scotian Slope LF= Laurentian Fan SWGB= SW Grand Bank FP= Flemish Pass OB= Orphan Basin LS= Labrador Slope 1100-m Isobath: Stronger Means on LS then FP (no data from SWGB) 2000-m Isobath: Strongest Max on SWGB (no data from FP and LS) Weakest Currents on Laurentian Fan


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