Field measurements of the vertical shears for a drift current

Field measurements of the vertical shears for a drift current We describe the procedure of field experiments aimed at measuring the vertical profiles of the vectors of a drift current with the help of quasi-Lagrangian drifters. We present the data on the vertical shears of the current at depths of 0.5–5 m obtained under the conditions of neutral stratification in the upper 5-m layer of the sea in the presence of weak and moderate winds. The correspondence of the obtained data to the concept according to which the subsurface layer of the sea is regarded as a near-wall turbulent layer with Ekman current located below is analyzed. A conclusion is made that the results of measurements correspond, on the average, to the classical concepts demonstrating both the region of logarithmic sublayer and its transition into the Ekman spiral. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Oceanography Springer Journals

Field measurements of the vertical shears for a drift current

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Publisher
Kluwer Academic Publishers-Consultants Bureau
Copyright
Copyright © 2007 by Springer Science+Business Media, Inc.
Subject
Earth Sciences; Oceanography; Remote Sensing/Photogrammetry; Atmospheric Sciences; Climate Change; Environmental Physics
ISSN
0928-5105
eISSN
0928-5105
D.O.I.
10.1007/s11110-007-0003-y
Publisher site
See Article on Publisher Site

Abstract

We describe the procedure of field experiments aimed at measuring the vertical profiles of the vectors of a drift current with the help of quasi-Lagrangian drifters. We present the data on the vertical shears of the current at depths of 0.5–5 m obtained under the conditions of neutral stratification in the upper 5-m layer of the sea in the presence of weak and moderate winds. The correspondence of the obtained data to the concept according to which the subsurface layer of the sea is regarded as a near-wall turbulent layer with Ekman current located below is analyzed. A conclusion is made that the results of measurements correspond, on the average, to the classical concepts demonstrating both the region of logarithmic sublayer and its transition into the Ekman spiral.

Journal

Physical OceanographySpringer Journals

Published: May 13, 2007

References

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