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Sonar Performances - Essay Example

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Sonar Performances

This project entails the planning and execution of an oceanographic survey to determine the differences in sound velocity variables over the neap and spring tide cycles in the Dart and Tamar estuaries, and their impact on sonar-related performances. This study is largely based on research provided by Desiree Batton in conjunction with the Hydrographic Society, The Dart Observatory at the Britannia Royal Naval College and Graham Tattersall of the CEFAS Lowestoft Laboratory, as well as additional research. The tide cycles at the mouths of these two estuaries differ in some factors that influence the movement of sound. This paper plans to show what those factors are and how they affect sonar usage.
The report will present data that was ascertained by using the current appropriate techniques and tools. It will analyze the variability of sound velocity, present the results and make determinations based on those analyses and calculations.
Several determinations will be necessary to conclude this paper, such as the variations in bottom sound velocity as opposed to the variations in surface sound velocity. ...
The report will present data that was ascertained by using the current appropriate techniques and tools. It will analyze the variability of sound velocity, present the results and make determinations based on those analyses and calculations.

Several determinations will be necessary to conclude this paper, such as the variations in bottom sound velocity as opposed to the variations in surface sound velocity. For instance the calculations for bottom sound velocity will take the higher level of mixing into account, while the calculations for surface sound velocity will need to look at temperature variables more, especially spring tide. Differing types of measuring equipment will be needed to gain the information required. In addition, time of day and the varying points of tidal activity are considerations that will add into the data.

Limitations of this report may be found in the inaccuracy of some instruments that measure salinity or other factors, and . . .

Undertaking this project is an effort to coalesce the information previously put forth by researchers of these two estuaries and discover causes for the variables between the them.

This project is designed to correlate with other projects that focus on sound speed or sound velocity. The need to understand how sound travels through tidal waters, in particular the Dart and Tamar estuaries, is of great significance to ongoing research. The research of A. D. Priestley and R. H. C. Thain, as well as M. A. Davidson and others is reflected in this project. Their work, which has increased the understanding of estuarine stratification, "fronts" and hydraulic dynamics, lay much of the groundwork for future projects. The focus of the Dart Observatory projects have been to discover ...Show more

Summary

Sound velocity or speed varies considerably in different conditions underwater. One of the biggest differences is the level of salinity in the water, so where seawater meets freshwater there is a dramatic change in sound velocity. This information is very important to anyone using sonar equipment in areas where the salinity levels, as well as other factors, changes.
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Sonar Performances essay example
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