Quantitative 2-D seabed mapping at regional scales
Abstract
"The nature of seabed geoacoustic variability at lateral scales from order 1 m to 10 km is poorlyunderstood. The goal of this 3-year project is to develop and apply observational strategies toquantify seabed variability (and uncertainty) in two dimensions (2D) at lateral scales order 1 m to10 km over the band 100 5000 Hz. The approach has two main pillars; the first addressesdeterministic properties by extending a seabed reflection methodology from local to regionalscales. The second pillar addresses stochastic properties by developing techniques for quantifyingsediment volume heterogeneity spectra and other stochastic parameters at regional scales. Thecombined pillars of the proposed research will advance understanding of the seabed environmentover spatial scales from sub-meter to tens of km, scales that have been difficult/impossible toquantitatively probe until now. The observational/analysis methods developed here can inform thebasis for next-generation survey techniques enabling faster, more comprehensive seabed products.In addition, the advancement in knowledge of seabed structure (lateral variability) will allow betterunderstanding of its effects on the propagating and scattered acoustic field. In turn, these will betterinform environmental awareness (via improved databases and Through-the-Sensor methods) andenable Fleet assets to better operate in the undersea environment in bottom-limited regions."
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 08, 2020
- Source ID
- N000142012367
Entities
People
- Martin Siderius
Organizations
- Office of Naval Research
- Portland State University
- United States Navy