DRI internal Wave Simulations
WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
Pagination or Media Count:
The ocean is a stratified medium and thus filled with internal gravity waves. Even though the statistics of these fluctuations are fairly well known, these waves fluctuate randomly and hence represent true uncertainty. When an acoustic prediction is needed for an ocean region, knowledge of the background sound speed profile is an additional uncertainty. A processing module is developed that takes profile estimates as input and uses numerically simulated linear internal wave displacements to create two-dimensional range-dependent sound speed fields. These fields are available for use in acoustic modeling and target estimation studies. Field realizations were obtained for four ocean regions. These examples illustrate variability induced by internal waves and how this variability may be useful in some important ways.
- Physical and Dynamic Oceanography