Title :
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
fDate :
9/1/2000 12:00:00 AM
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;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
