Adjoint study of water column variability and propagation in the transverse acoustic variability experiment (TAVEX 2008).

Abstract

Internal wave and other water column activity in the conductivity, temperature, and depth (CTD) data collected in the East China Sea as a part of TAVEX 2008 are used as a basis for analyzing acoustic propagation at 500 Hz between a fixed source and fixed horizontal line array placed on the seafloor. Because the CTD data were not taken coincident with the acoustic propagation path (in general), adjoint modeling methods will be used to study acoustic data and prediction misfit. Usefulness of the adjoint method for these experimental conditions will be discussed. [Work supported by ONR.]