Winter‐time near‐surface currents in the strait of Juan de Fuca

1982 ◽  
Vol 20 (4) ◽  
pp. 327-339 ◽  
Author(s):  
James R. Holbrook ◽  
David Halpern
Keyword(s):  
Surface Currents ◽  
Near Surface ◽  
Juan De Fuca ◽  
Winter Time

scholarly journals Fish aggregating devices drift like oceanographic drifters in the near-surface currents of the Atlantic and Indian Oceans

2019 ◽  
Vol 171 ◽  
pp. 108-127 ◽  
Author(s):  
T. Imzilen ◽  
E. Chassot ◽  
J. Barde ◽  
H. Demarcq ◽  
A. Maufroy ◽  
...  
Keyword(s):  
Surface Currents ◽  
Near Surface ◽  
Fish Aggregating Devices

scholarly journals Subsurface Jets in the Northwestern Gulf of Mexico

2009 ◽  
Vol 39 (11) ◽  
pp. 2875-2891 ◽  
Author(s):  
Peter Hamilton ◽  
Antoine Badan
Keyword(s):  
Velocity Profile ◽  
Gulf Of Mexico ◽  
Internal Waves ◽  
Vertical Axis ◽  
Surface Currents ◽  
Profile Data ◽  
Near Surface ◽  
Anomalous Density ◽  
Slope Topography ◽  
Upper Slope

Abstract Subsurface jets, defined as having velocity maxima >40 cm s−1 at depths between 100 and 350 m, and being surrounded by much weaker near-surface currents, have been observed over the northwestern Gulf of Mexico continental slope. The observations were from an array of 14 moorings equipped with upward-looking 75-kHz ADCPs deployed at 450–500 m. A total of 10 jet events were observed in 18 ADCP years of velocity profile data, where these events were clearly not the result of downward-propagating inertial internal waves. The jets had durations from about 1 to 8 days and were usually associated with interactions between similarly sized cyclones and anticyclones over the slope or with the interaction of an eddy with upper-slope topography. The jets are associated with potential vorticity anomalies and their inferred length scales indicate that the dynamics depart from simple geostrophic balances. Observed anomalous density gradients present during the jets seem to involve the tilting of the vertical axis of the center of rotation of one or more of the interacting eddies.

scholarly journals Influence of Near‐Surface Currents on the Global Dispersal of Marine Microplastic

2019 ◽  
Vol 124 (8) ◽  
pp. 6086-6096 ◽  
Author(s):  
David Wichmann ◽  
Philippe Delandmeter ◽  
Erik van Sebille
Keyword(s):  
Surface Currents ◽  
Near Surface
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