Accession Number : ADA332748
Title : Physical and Biological Descriptors for Ocean Bubbles and Acoustic Surface Backscatter
Descriptive Note : Final rept. 1 Oct 94-30 Sep 97
Corporate Author : JOHNS HOPKINS UNIV LAUREL MD DEPT OF SUBMARINE TECHNOLOGY
Personal Author(s) : Hanson, Jeffrey L.
PDF Url : ADA332748
Report Date : 30 SEP 1997
Pagination or Media Count : 37
Abstract : Processes related to the supply, mixing, and removal of ocean bubbles and their impact on low frequency (0-1000 Hz) acoustic surface scattering strength (SSS) in the upper ocean have been investigated. A key finding is that gross site-to-site differences between Critical Sea Test and Chapman-Harris SSS observations are explained by the mean ocean temperature, biological productivity, and wave conditions at each site. Furthermore, wave energy dissipation rate, estimated from wave spectra using wave energy flux considerations, was found to be a better descriptor for ocean whitecaps, related to upper ocean bubble supply, than wind speed. These results demonstrate that a model could be developed for estimating SSS statistics in coastal areas using readily available (by satellite and operational models) environmental inputs.
Descriptors : *OCEAN SURFACE, *ACOUSTIC SCATTERING, DISSIPATION, BUBBLES, LOW FREQUENCY, BIOLOGICAL PRODUCTS.
Subject Categories : Physical and Dynamic Oceanography
Distribution Statement : APPROVED FOR PUBLIC RELEASE