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Measurements of Backscattering Strength from Various Shapes of Sediment Surfaces and Layers  

김형수 (한양대학교 지구해양과학과 해양음향연구실)
최지웅 (한양대학교 지구해양과학과 해양음향연구실)
나정열 (한양대학교 지구해양과학과 해양음향연구실)
석동우 (한양대학교 지구해양과학과 해양음향연구실)
Publication Information
The Journal of the Acoustical Society of Korea / v.22, no.1, 2003 , pp. 78-87 More about this Journal
Abstract
High-frequency (126-㎑) bottom backscattering measurements with various bottom types were conducted at the water tank in Ocean Acoustic Laboratory, Hanyang University. For the purpose of investigating the energy distribution of bottom scattering with various bottom types, the sediment was varied with gravel, sand, sandy mud and mixed bottoms. To examine the anisotropic nature of the scattering due to the orientations of bottom ripple, the footprints were made transverse and longitudinal to the direction of incident wave. The total scattering characteristics are that the larger grazing angles the larger backscattering strengths become and backscattering strengths for a transverse ripple case are higher than those of longitudinal ripple case. finally, the variations of scattering strength depend mainly on the ripple's orientation.
Keywords
Bottom backscattering; Reverberation; Ripple; Bottom roughness;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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