Quantifying ocean acoustic environmental sensitivity

Authors

  • Stan E. Dosso School of Earth and Ocean Sciences, University of Victoria, Victoria, BC V8W 3P6, Canada
  • Diana F. McCammon McCammon Acoustical Consulting, 475 Baseline Rd, Waterville, NS B0P 1P0, Canada
  • Peter M. Giles General Dynamics Canada, 11 Thornhill Dr, Dartmouth, NS B3B 1R9, Canada
  • Sean Pecknold Defence Research and Development Canada-Atlantic, Dartmouth, NS B2Y 3Z7, Canada
  • Paul C. Hines Defence Research and Development Canada-Atlantic, Dartmouth, NS B2Y 3Z7, Canada

Keywords:

Acoustic waves, Environmental impact, Nonlinear systems, Oceanography, Parameter estimation, Sensitivity analysis, Environmental uncertainty, Mathematical equations, Nonlinear measures

Abstract

Linear, linearized, and nonlinear measures of environmental sensitivity for ocean acoustic propagation that accounts for realistic uncertainties in various environmental parameters are examined. The implicit assumption of a linear relationship between parameter sensitivity and parameter uncertainty is examined by comparing the three sensitivity measures over a range of parameter uncertainties about the actual assumed environmental uncertainty. The interpretation of sensitivity is well defined for linear problems such as ocean acoustic propagation. Mathematical equations represent how the uncertainties transfer from parameter to data for a linear problem and the ratio of the standard deviation of the specified datum to its expected value. The ocean sound speed profile (SSP) uncertainty is taken to represent oceanographic variability due to surface heating/cooling and wind mixing, with the effects decaying exponentially with depth over the top 30 meter.

Published

2006-09-01

How to Cite

1.
Dosso SE, McCammon DF, Giles PM, Pecknold S, Hines PC. Quantifying ocean acoustic environmental sensitivity. Canadian Acoustics [Internet]. 2006Sep.1 [cited 2021Apr.12];34(3):54-5. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1819

Issue

Section

Proceedings of the Acoustics Week in Canada

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