Seabottom characterization using multibeam echosounder angular backscatter: an application of the composite roughness theory

Author

Chakraborty, Bishwajit ; Schenke, Hans Werner ; Kodagali, Vijay ; Hagen, Rick

Author_Institution

Nat. Inst. of Oceanogr., Goa, India

Volume

38

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

2419

Lastpage

2422

Abstract

Composite roughness theory is used to characterize Southern Ocean bottom backscatter (multibeam) data. Spectral parameters based on Helmholtz-Kirchhoff´s theory, D. R. Jackson et al. (1986), are determined from measured near-normal incidence values. A splicing technique using Rayleigh-Rice theory, E.Y. Kuo (1964), is employed beyond 20° incidence angles. Estimated roughness parameters for six deep ocean areas correlate with geology

Keywords

geophysical techniques; oceanographic techniques; seafloor phenomena; sonar; Helmholtz-Kirchhoff´s theory; Rayleigh-Rice theory; Southern Ocean; angular backscatter; composite roughness theory; geology; geophysical measurement technique; marine sediment; multibeam echosounder; near-normal incidence; ocean; rough surface; seabottom characterization; seafloor topography; sonar; spectral parameters; splicing; Antarctica; Backscatter; Filtering; Geologic measurements; Geology; Oceans; Parameter estimation; Sea floor; Sea measurements; Splicing;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.868896

Filename

868896