Numerical investigation of out-of-plane sound propagation in a shallow water experiment
Abstract
In an experiment in the Florida Straits, broadband pulses were transmitted over a range of 10km and received by a vertical hydrophone array. For pulses with center frequency below 400Hz, the received signal consisted of a dominant arrival followed by a secondary one delayed by about 0.4s. A hypothesis that the secondary arrival was caused by 3D out-of-plane propagation is investigated here numerically with a 3D parabolic equation model (3DWAPE) and a 3D ray model (MOC3D). Both models clearly predict a secondary arrival caused by 3D horizontal refraction from the sloping bottom in the shoreward direction.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 11, 2008
- Source ID
- 10.1121/1.3008068
Entities
People
- Frédéric Sturm
- N. Ross Chapman
- Sven Ivansson
- Yong-min Jiang
Organizations
- Office of Naval Research
- Swedish Defence Research Agency
- University of Victoria
- École Centrale de Lyon