海洋調査技術
Online ISSN : 2185-4920
Print ISSN : 0915-2997
ISSN-L : 0915-2997
論説
マルチナロー音響測深機による海底の底質とroughnessに関するパラメータの推定
竹内 倶佳メレーズ ヒラリ月岡 哲永井 豊
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1992 年 4 巻 2 号 p. 2_19-2_27

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The Kirchhoff model expresses a relation between acoustic backscattering and seafloor characteristics and roughness especially for angles near normal incidence. In Sea Beam with equivalently 16 narrow acoustic beams, each beam has grazing angle from 70° to 90°, which is the range within which its approximation gives better results. Parameters of seafloor characteristics and roughness is capable to treat as a nonlinear inversion problem. This problem was solvable using BFGS formula replacing it into a forward problem. This method was applied to backscattering data collected from Japan Trench, Hachijo Depression and Mikura Basin using Sea Beam , and its usefulness for acoustical remote sensing of seabeds was confirmed.

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© 1992 海洋調査技術学会
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