Impact of Range-Dependent Sediment Properties on the Acoustic Field in 2-D Shallow Water Environments.

摘要

The goal of this research is to understand the effects of range-dependent sediment properties on the acoustic field in 2-D shallow water environments. This information, in part, is required to solve the statistical inference problem in inhomogeneous shallow water environments. The spatio-temporal variability of the water column needs to be properly accounted for while looking for the effect of range-dependent sediment properties on the acoustic field. The objective of the current work is to create a high-fidelity model of the water column along a single propagation track for the Shallow Water 2006 (SW06) experiment. The water column model is constructed from oceanographic data measured at moorings located along the acoustic propagation track. The water column model describes oceanographic features on several space-time scales, including those ranging from frontal boundaries to nonlinear internal waves. The purpose of the water column model is to reduce the mismatch between measured and modeled acoustic data so that other propagation effects, such as range-dependent sediment properties can be investigated in the future.