Modeling, characterizing, and predicting effects of internal gravity waves on acoustic propagation on basin to global scales
Abstract
For the proposed work, the University of Michigan (U-M) team, consisting of a PI and a postdoc, will collaborate with our colleague"s at ARiA, Applied Ocean Sciences, Florida State University (FSU), University of Southern Mississippi (USM), and the Stennis Space Center branch of Naval Research Laboratory (NRL-SSC), on the impacts of oceanic internal tides and the internal gravity wave (IGW) continuum on basin-scale acoustical motions. The U-M PI, together withcollaborators at FSU, USM, and NRL-SSC, has pioneered the introduction of tides into highresolution general circulation models used for ocean forecasting by the US Navy. The U-M team will focus on the comparison of the internal tides and the IGW continuum spectrum, in simulations run at FSU and NRL, to internal tides measured by satellite altimetry, and to the IGW continuum spectrum measured by moored historical observations. The FSU/NRL simulations will be done with the HYbrid Coordinate Ocean Model (HYCOM) and Modular Ocean Model version 6 (MOM6). The simulations will be performed with different horizontal and vertical grid spacings. In our past work we have shown that model grid spacings are a critical factor in the accuracy of the modeled internal tides and IGW continuum; the present work follows along that line of reasoning. We will also examine the impact of ocean model resolution on the acoustical motions. The postdoc will learn about both physical oceanographyand acoustics, and will therefore be well positioned for a career at the interface of these two fields, thus satisfying a major goal o"f the US Navy in training the next generation of scientists in fields of interest to the Navy.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Nov 26, 2019
- Source ID
- N000141912712
Entities
People
- Brian K. Arbic
Organizations
- Board of Regents of the University of Michigan
- Office of Naval Research
- United States Navy