Acoustics of Complex Multi-phase Ocean-Bottom Materials and Associated Effects on Shallow Water Propagation
Abstract
The first long-term scientific objective of this project is to increase ourunderstanding of sound propagation in ocean bottom sedi"ments, including water-saturated sands and muds, sediments that contain a range of grain sizes (such as those present at the site of"" the Seabed Characterization Experiment), gas-bearing sediments and sediments which support seagrass. The second objective is to imp"rove our understanding of how these sedimentcharacteristics effect sound propagation in shallow water ocean waveguides. Both these" objectives in turn benefit sonar operation in shallow water, buried object detection and acoustic communications in shallow water." The goals will be met using the following approaches: The PI will continue to serve as co-chief scientist for ONR~s Seabed Characte"rization Experiment (SCE17), along with David Knobles. The PI conducted his own series of propagation experiments (joint with David" Knobles) during SCE2017 and we propose to continue toanalyze data from that experiment. We will continue performing wideband laboratory and in situ measurements of multiphase ocean-bottom materials. The PI has an ongoing joint project with Prof. J.P. Hermand on the acoustics of seagrass. Hermand is funded under ONR Global support to conduct a number of future laboratory and at-sea measureme"nts, and the PI and hisstudent Jay Johnson will continue to play a collaborative role for this activity.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 26, 2018
- Source ID
- N000141812188
Entities
People
- Preston S Wilson
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Austin