Abstract
Out-of-plane scattering is of interest to the Arctic noise community because of the observation of significant out-of-plane motion in ice excited by explosive sources in the water column. Because low-frequency fluid-elastic scattering apparently couples energy into subsonic flexural waves as well as horizontally polarized shear (SH) waves in the ice, radiating in all directions, some impact on Arctic transmission loss and horizontal coherence properties is anticipated. The self-consistent boundary perturbation formulation for rough surface scattering developed by Kuperman and Schmidt [J. Acoust. Soc. Am. 86, 1511–1522 (1989)] is used to estimate the mean and scattered fields for a two-dimensionally rough fluid-elastic interface excited by an incoming plane wave. The reflection and scattering coefficients determined by the full 3-D formulation are compared to earlier results, where the surface roughness was assumed to be polarized in the plane of the exciting wave only. In addition, the kernel of the wave-number integral for the scattered field is examined and it is found that significant energy is scattered into Scholte waves as well as SH waves at all azimuths relative to the incoming plane wave, consistent with the experimental observations. [Work supported by ONR.]
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
