Now showing items 1-8 of 8

    • Biases in Thorpe-scale estimates of turbulence dissipation. Part I : Assessments from large-scale overturns in oceanographic data 

      Mater, Benjamin D.; Venayagamoorthy, Subhas K.; St. Laurent, Louis C.; Moum, James N. (American Meteorological Society, 2015-10)
      Oceanic density overturns are commonly used to parameterize the dissipation rate of turbulent kinetic energy. This method assumes a linear scaling between the Thorpe length scale LT and the Ozmidov length scale LO. Historic ...
    • Enhanced diapycnal diffusivity in intrusive regions of the Drake Passage 

      Merrifield, Sophia T.; St. Laurent, Louis C.; Owens, W Brechner; Thurnherr, Andreas M.; Toole, John M. (American Meteorological Society, 2016-04-05)
      Direct measurements of oceanic turbulent parameters were taken upstream of and across Drake Passage, in the region of the Subantarctic and Polar Fronts. Values of turbulent kinetic energy dissipation rate ε estimated by ...
    • Horizontal scales of variability over the Middle Atlantic Bight shelf break and continental rise from finescale observations 

      Todd, Robert E.; Gawarkiewicz, Glen G.; Owens, W. Brechner (American Meteorological Society, 2013-01)
      Observations with fine horizontal resolution are used to identify the horizontal scales of variability over the Middle Atlantic Bight (MAB) shelf break and continental rise. Spray gliders collected observations along two ...
    • Improving LADCP velocity with external heading, pitch, and roll 

      Thurnherr, Andreas M.; Goszczko, Ilona; Bahr, Frank B. (American Meteorological Society, 2017-08-11)
      Data collected with acoustic Doppler current profilers installed on CTD rosettes and lowered through the water column [lowered ADCP (LADCP) systems] are routinely used to derive full-depth profiles of ocean velocity. In ...
    • Internal waves and mixing near the Kerguelen Plateau 

      Meyer, Amelie; Polzin, Kurt L.; Sloyan, Bernadette M.; Phillips, Helen E. (American Meteorological Society, 2015-12-07)
      In the stratified ocean, turbulent mixing is primarily attributed to the breaking of internal waves. As such, internal waves provide a link between large-scale forcing and small-scale mixing. The internal wave field north ...
    • Near-inertial internal wave field in the Canada Basin from ice-tethered profilers 

      Dosser, Hayley V.; Rainville, Luc; Toole, John M. (American Meteorological Society, 2014-02)
      Salinity and temperature profiles from drifting ice-tethered profilers in the Beaufort gyre region of the Canada Basin are used to characterize and quantify the regional near-inertial internal wave field over one year. ...
    • Scaling turbulent dissipation in the transition layer 

      Sun, Oliver M. T.; Jayne, Steven R.; Polzin, Kurt L.; Rahter, Bryan A.; St. Laurent, Louis C. (American Meteorological Society, 2013-11)
      Data from three midlatitude, month-long surveys are examined for evidence of enhanced vertical mixing associated with the transition layer (TL), here defined as the strongly stratified layer that exists between the well ...
    • Suppression of internal wave breaking in the Antarctic Circumpolar Current near topography 

      Waterman, Stephanie N.; Polzin, Kurt L.; Naveira Garabato, Alberto C.; Sheen, Katy L.; Forryan, Alexander (American Meteorological Society, 2014-05)
      Simultaneous full-depth microstructure measurements of turbulence and finestructure measurements of velocity and density are analyzed to investigate the relationship between turbulence and the internal wave field in the ...