Seabed Geoacoustic Structure at the Meso-Scale
Abstract
LONG TERM GOALS: The long term science goals are to understand the nature of seabed variability at meso-scales O(101- 103) m and determine how meso-scale structures impact acoustic propagation, diffuse reverberation, and clutter. OBJECTIVES: The objectives are to develop new observational methods to quantify meso-scale seabed variability/ uncertainty and also develop modeling techniques to understand the impact of spatial variability on propagation and reverberation. APPROACH: The observational approach is based on direct path measurements of seabed reflection and scattering. The key advantages of this approach are: 1) high resolution vertically, 0.1m and laterally: inner scale of ~10m and outer scale of 100 km; 2) it substantially reduces uncertainties from the space/time-varying oceanography and biology due to short path lengths; 3) it requires a low source level, 4) can be hosted on an Autonomous Undersea Vehicle (AUV), permitting observations of 3D meso-scale features, and making it an attractive eventuality as a survey tool. A cartoon of the system is shown in Figure 1.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2011
- Accession Number
- ADA571682
Entities
People
- W. Charles (Wilbur) Holland, Jr.
Organizations
- Pennsylvania State University