Midfrequency Geoacoustic Sea Ice Interaction Modeling
Abstract
This project is aimed to improve understanding of midfrequency acoustic interaction with sea ice in complex changing arctic environments. A technical approach is suggested which combines physics-based modeling of sound scattering from the ice and analysis of measurements of acoustic transmission in ice-covered ocean environments at short and medium ranges. Such measurements allow estimating two major acoustic characteristics of ice, the coherent reflection loss and incoherent scattering strength, at different frequencies and angles. However, relationships between these characteristics and physical properties of sea ice have not yet been adequately understood, and a geo-acoustic ice interaction model that accounts for midfrequency effects of layered structure combined with ice elasticity, roughness, and heterogeneity, has not yet been developed. This research is aimed to address this gap, develop such a comprehensive model, and investigate its applications including new physics-based algorithms of remote acoustic sensing of the changing arctic environment.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2023
- Source ID
- N000142312192
Entities
People
- Anatoliy Ivakin
Organizations
- Office of Naval Research
- United States Navy
- University of Washington