An experimental study of acoustic forward and backscattering using a scale model of Arctic ice ridges ...

• Main Author: Fitzgerald Williams, Hollis Edward
• Format: Text
• Language: unknown
• Published: American University 2023
• Subjects: Arctic; Arctic Ocean
• Online Access: https://dx.doi.org/10.57912/23867238.v1; https://aura.american.edu/articles/thesis/An_experimental_study_of_acoustic_forward_and_backscattering_using_a_scale_model_of_Arctic_ice_ridges/23867238/1

There is continuing interest in understanding the propagation of sound in the Arctic Ocean. The location of sound sources in the Arctic Ocean and the mapping of the ice-water interface both use the scattering of acoustic data and its analysis. The better the analysis model, the better the source location and mapping. This paper reports on the development of an experimental system for scale modeling of Arctic ice ridges. This system measures the forward and backward scattered waves from acoustically "soft" protuberances at ka = 0.67. The new experimental system examines the Burke-Twersky mathematical theory applied to ocean acoustic wave scattering. The experiment implements the geometry of the Twersky model in its evaluation. The Diachok geometric model was used for the bottom cross-section of an Arctic ice keel. The system measured the reflection coefficient of a scattered wave. This systematic approach studied the scattering from a single ridge, with varying incident-grazing angles, and two different ...