Abstract
A three-dimensional ocean environment is generated using measured ocean data from the ASIAEX South China Sea experiment. The experiment site is characterized as an active internal tide/solibore propagation region along the Northwestern shelf break of the South China Sea. The three-dimensional acoustic effects are studied using a wide-angle version of the parabolic equation code for3d. Mode coupling matrices and horizontal refractions are shown to demonstrate the 3-D effects. Variations in topography of the shelf break and in the water column due to the internal solibore propagation cause significant mode coupling and 3-D effects in the acoustic field. [Work supported by National Science Council of Republic of China for first and second authors. Work supported by ONR for the third and fourth authors.]
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