Articles | Volume 16, issue 4
Ocean Sci., 16, 799–815, 2020
Ocean Sci., 16, 799–815, 2020

Research article 13 Jul 2020

Research article | 13 Jul 2020

The role of turbulence and internal waves in the structure and evolution of a near-field river plume

Rebecca A. McPherson et al.

Data sets

Hydrographic data from near-field Doubtful Sound, New Zealand R. A. McPherson, C. L. Stevens, J. M. O’Callaghan, A. Lucas, and Nash, J.

Short summary
River plume characteristics (density, velocity, turbulence) are measured in the first several kilometers of a river flow entering a New Zealand fjord. These observations are used to quantify the influence of the main plume dynamics on controlling the behavior and structure of the flow. The mixing of dense, stationary water from below into the fast-flowing plume drove its deceleration. Internal waves were capable of transporting almost 15 % of the total momentum out beyond the plume's boundaries.