In situ acoustic measurements of bubble populations in coastal fronts
Abstract
DURIP notes:This instrumentation request will be of immediate benefit to the ONR funded UnderSea Remote Sensing and FABLE DRIs. Taken as a whole, the instrumentation establishes new research capabilities, heretofore not utilized in the oceanographic research community, that of a mobile instrument acoustic sensor to quantify bubbles in the water column. This equipment will enable a new understanding of the frequency ranges over which bubble populations affect performance of Navy sonars and acoustic communication systems. Woods Hole Oceanographic Institution has an impressive oceanographic department, with state-of-the-art facilities, their own research vessel, and a strong research faculty. This equipment complements their current suite of instrumentation and capabilities, and, as they always do, will integrate undergraduates, graduate students, and post docs into the data collection activities as well as the research and data analysis. Maintaining a robust oceanographic data collection capability, including scientists that continue to develop new sensing modalities and techniques, is an important element of the DoD basic research program. This proposal, with the novel elements of the bubble sampling hardware, really advances the DoD s objectives.Navy operational models in support of MIW and ASW need to provide an accurate forecast of the ocean, including the performance of underwater sonar systems. The subduction of bubbles from the surface down to depth are an aspect that has never been addressed in the current suite of operational models (they only consider ducting from stratification), and, as indicated in the proposal there are many sources beyond wave breaking which have been shown to be significant contributors. This could open up a new arena of investigation and, if successful, considerably improve operational forecasts of sonar system performance
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 13, 2019
- Source ID
- N000141912393
Entities
People
- Andone Lavery
Organizations
- Office of Naval Research
- United States Navy
- Woods Hole Oceanographic Institution