Modeling characterizing and predicting effects of internal gravity waves on acoustic propagation on basin to global scales
Abstract
The University of Southern Mississippi (USM) team comprises PI Maarten Buijsman and his post-doc. The USM team has collaborated on" HYCOM projects with the PIs of the U-M, NRL, and FSU teams since 2012. Buijsman has extensive experience in performing global HYCOM simulations and computing energy diagnostics for surface and internal tides. PI Buijsman and his post-doc will analyze existing HYCOM and MOM6 and new model simulations performed by PIs at Florida State University (FSU) and the Naval Research Laboratory (NRL). These simulations are conducted with and without tidal forcing and for different vertical and horizontal resolutions. The USM team will evaluate where tidal internal waves are generated and dissipated and provide feedback to the FSU and NRL teams about the realism of the internal waves in the new simulations. The USM team will compute tidal internal wave energy terms and perform a vertical mode decomposition. Simulated internal waves are dissipated by a linear wave drag in the models. The increase of the model resolution reduces the wave drag strength. It needs to be determined if this reduction causes the internal waves to be too energetic as compared toobservations. The USM team will also study how well nonlinear solitary waves are simulated in the global ocean models. These wav"es have short horizontal and vertical scales, which may affect sound wave propagation.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 30, 2019
- Source ID
- N000141912704
Entities
People
- Maarten C Buijsman
Organizations
- Office of Naval Research
- United States Navy
- University of Southern Mississippi