Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
ABSTRACT This work presents turbulence data collected in the Gulf of Mexico in an attempt to quantify the source or sources of turbulent dissipation along the continental shelf and any possible causes for its seasonal change. In addition, this work is an effort to assist those concerned with mixing and transport problems working in similar environments. Multiple offshore research cruises were held in both the Gulf of Mexico and the Atlantic Ocean for data collection. The basis of the work is a tethered profiler that measures dissipation-scale turbulence as well as temperature and conductivity at high-resolution. This data is compared against that collected by an in situ acoustic Doppler current profiler and wind meter along with salinity and conductivity measurements taken during the casts. The primary location for this study is a flat, featureless location in the northeastern portion of the Gulf known as Apalachee Bay in water of 20 meters depth. Because of the extremely gradual slope of the shelf in this region, this location is approximately 20 nautical miles off shore. Due to the tidal and wind variations in the area, along with the extreme seasonal temperature swings and surface freshwater flux, it has been found that a significant amount of turbulent energy is absorbed in this region. Density calculations indicate an abrupt seasonal overturning of the water column; cooling during the winter months creates a thermally homogeneous water column. What little stratification does exist, however, is subsequently overturned by a combination of the reversal of the along-isobath currents and increasing winds. Late summer profiles showed a well-mixed water column with very little remaining stratification.
boundary layer, dissipation, Gulf of Mexico, microstructure, turbulence
Date of Defense
December 19, 2011.
A Thesis submitted to the Department of Earth, Ocean and Atmospheric Science in partial fulfillment of the requirements for the degree of Master of Science.
Includes bibliographical references.
Carol Anne Clayson, Professor Directing Thesis; Markus Huettel, Committee Member; Louis St. Laurent, Committee Member; Georges Weatherly, Committee Member.
Florida State University
Use and Reproduction
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). The copyright in theses and dissertations completed at Florida State University is held by the students who author them.