Accession Number : ADA192204

Title :   Identification and Acoustic Characterization of Seamounts,

Corporate Author : SCIENCE APPLICATIONS INTERNATIONAL CORP MCLEAN VA

Personal Author(s) : Eller, A I ; Haines, L

PDF Url : ADA192204

Report Date : 30 Nov 1987

Pagination or Media Count : 75

Abstract : The presence of seamounts introduces a discrimination problem between acoustic returns from these geological features and from targets. The returns from seamounts can be quite large and can extend over long periods of time. A process has been developed which will efficiently extract, identify and acoustically characterize seamounts. This process extracts seamounts from an area of ocean and estimates their location, height, base area and acoustic target strength. Separate treatment of seamounts is necessary because the Baseline model, is likely to miss individual seamounts that lie between the radials. This report describes seamount statistics, origins and summarizes bathymetric processing approaches used to extract them. The performance of the extraction software is evaluated by comparing a digitally derived database to a manually derived one. Seamount reverberation papers and seamount size statistics are presented along with a first order approximation of seamount target strengths.

Descriptors :   *DISCRIMINATION, *SEAMOUNTS, *ACOUSTIC DETECTION, ACOUSTICS, BASE LINES, BATHYMETRY, DATA BASES, EXTRACTION, LONG RANGE(TIME), MODELS, OCEANS, PROCESSING, SIZES(DIMENSIONS), STATISTICS, TARGET STRENGTH, COMPUTER PROGRAMMING

Subject Categories : Physical and Dynamic Oceanography
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE