High-Resolution Mapping and Backscatter Studies in Support of the Ripples DRI
Abstract
The long-term goal of the RIPPLES DRI is to develop the ability to predict the geometry and evolution of seafloor morphology and in particular the presence or absence of ripples which have been shown to affect the sub-seafloor penetration of acoustic energy. Specific goals are to: (1) Measure and model ripple morphology and gradients on scales ranging up to kilometers; (2) Understand the response of ripples to changes in wave and wave-current forcing; (3) Measure and model rates of biological degradation (or production) of seafloor morphology; (4) Measure and model effects of a distribution of grain-scale properties (e.g. size, density, cohesion) on ripple morphology; and (5) Understand the role of ripples in generating surface and subsurface sedimentary structures. In support of these long-term goals, the UNH-CCOM team has conducted ultra high-resolution, multifrequency, multibeam mapping program in order to: (1) Establish the overall morphological context in the area of the RIPPLES DRI/SAX04 experiment (bathymetry and acoustic backscatter); (2) Establish the detailed distribution of ripples and other small-scale features throughout the experimental area, before the start of the experiment, immediately after deployment of the sensors, and at intervals during the experiment; (3) Explore techniques for using the backscatter recorded by the multibeam sonar as a means to remotely identify seafloor properties including acoustic parameters, grain-size and biological components.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2006
- Accession Number
- ADA523809
Entities
People
- Barbara Kraft
- Brian Calder
- Christian De Moustier
- Larry Mayer
Organizations
- University of New Hampshire