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Proceedings Paper

Measurements of turbulent dissipation during the Bahamas Optical Turbulence Experiment
Author(s): Silvia Matt; Weilin Hou; Sarah Woods; Ewa Jarosz; Wesley Goode; Alan Weidemann
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Paper Abstract

The Bahamas Optical Turbulence Experiment (BOTEX) was conducted in the summer of 2011 to investigate the impact of turbulence on underwater optical imaging. Underwater optical properties can be affected by turbulence in the water, due to localized changes in the index of refraction. We discuss measurements of current velocity and temperature, made with a Nortek Vector Acoustic Doppler Velocimeter (ADV) and PME Conductivity- Temperature (CT) probe, as well as observations made with a Rockland Oceanographic Vertical Microstructure Profiler (VMP). The instruments were deployed in close proximity in the field and in the context of measurements of optical target clarity. Turbulent kinetic energy dissipation (TKED) and temperature dissipation (TD) rates are calculated from the ADV/CT measurements and compared to TKED and TD estimated from the data collected with the VMP. The results show reasonable agreement between the two methods; differences are attributed to turbulence patchiness and intermittence, as well as sampling challenges. The study also highlights the importance of collecting concurrent data on temperature, current velocity, and current shear to assess the turbulence impact on underwater optical properties.

Paper Details

Date Published: 3 June 2013
PDF: 10 pages
Proc. SPIE 8724, Ocean Sensing and Monitoring V, 872405 (3 June 2013); doi: 10.1117/12.2018303
Show Author Affiliations
Silvia Matt, National Research Council Postdoctoral Research Associate (United States)
U.S. Naval Research Lab. (United States)
Weilin Hou, U.S. Naval Research Lab. (United States)
Sarah Woods, U.S. Naval Research Lab. (United States)
Ewa Jarosz, U.S. Naval Research Lab. (United States)
Wesley Goode, U.S. Naval Research Lab. (United States)
Alan Weidemann, U.S. Naval Research Lab. (United States)


Published in SPIE Proceedings Vol. 8724:
Ocean Sensing and Monitoring V
Weilin W. Hou; Robert A. Arnone, Editor(s)

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