Acoustic tomography in the Straits of Florida
Citable URI
https://hdl.handle.net/1912/5394Location
Straits of FloridaDOI
10.1575/1912/5394Keyword
Underwater acoustics; TomographyAbstract
Variability of the Florida Current has been monitored via acoustic tomography. A
reciprocal tomography experiment was conducted in the eastern half of the Florida
Straits during mid October and November, 1983. A triangular array of transceivers,
with leg separations of approximately 45 kilometers, was deployed at 27°N. The
presence of a surface mixed layer in the region allowed for the ducted propagation
of acoustic energy in the surface layer. A deeper layer was sampled by an unresolved
group of refracted, bottom reflected ray arrivals. Incorporating the complete set of
arrivals, we are able to obtain depth dependent estimates of the temperature field,
current velocity, and relative vorticity. The oceanography of the region has been
shown to be dominated by the lateral shifting of the surface and subsurface core
of the Florida Current. The influx of westward flowing water through the Northwest
Providence Channel at 26°N also appears as a large scale signal in the eastern
Florida Straits. Low frequency fluctuations of temperature, current velocity, and
vorticity occur at periods ranging from several days to nearly two weeks, and are
intimately related to meandering of the Florida Current system.
Description
Submitted in partial fulfillment of the requirements for the degree of Master of Science at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 1989
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Suggested Citation
Thesis: Chester, David B., "Acoustic tomography in the Straits of Florida", 1989-09, DOI:10.1575/1912/5394, https://hdl.handle.net/1912/5394Related items
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