Effects of mixed layer shear on vertical heat flux

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Authors
Fleet, Stephen M.
Subjects
inertial oscillations
inertial motion
arctic
heat flux
entrainment
Richardson number
ice-tethered profiler
autonomous ocean flux buoy
acoustic Doppler current profiler.
Advisors
Stanton, Tim
Date of Issue
2016-12
Date
Dec-16
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
Measurements of salinity, temperature, and velocity shear profile time series were calculated from collocated AOFB and ITP buoys deployed in the Beaufort Sea from 2014–2015. Of interest was the effect ice speed has on MLD shear generation, Richardson number, and heat flux. The inertial components were also considered, as a large inertial event was present during the beginning of the data set. Data from the buoys show turbulent activity in the ocean during inertial wind events contributes to enhanced mixing in the mixed layer and entrainment of heat from the pycnocline. Data during non-inertial events has a much weaker correlation. Results demonstrated that during inertial events, ice speed was moderately correlated with heat flux (r = .56, p < .001). Non-inertial events saw a lower correlation of ice speed to heat flux (r = .312, p < .001). Relationships between ice speed and shear (r = .107, p < .001), ice speed and inverse Richardson number (r = .035, p = .256), inverse Richardson number and heat flux (r = .3, p < .001), heat content and heat flux (r = .084, p < .001) were also explored.
Type
Thesis
Description
Reissued 21 Feb 2017 with correction to spelling of Second Reader’s name.
Series/Report No
Department
Oceanography
Organization
Identifiers
NPS Report Number
Sponsors
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Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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