Accession Number : AD0692450

Title :   THE T-S GRADIENT METHOD, A NEW METHOD OF COMPUTING GEOSTROPHIC CURRENTS OVER LARGE OCEAN AREAS.

Descriptive Note : Technical rept.,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Denner,Warren Wilson

Report Date : JUN 1969

Pagination or Media Count : 202

Abstract : Requirements for indirect computation of geostrophic surface currents over large ocean areas are discussed. These requirements point to a need to simplify standard geostrophic computations, and to separate the first order thermal and haline contributions to geostrophic flow. The equations of motion for geostrophic flow are reviewed and the standard geostrophic computations discussed. Errors and limitations in the geostrophic method are reviewed. Previous attempts to simplify geostrophic computations are discussed and shown to be inadequate for synoptic computation over hemispheric ocean areas. It is shown that the Helland-Hansen equation can be rewritten such that the geostrophic velocity is composed of a temperature structure term and a salinity structure term. (Author)

Descriptors :   (*OCEAN CURRENTS, NUMERICAL ANALYSIS), PARTIAL DIFFERENTIAL EQUATIONS, TEMPERATURE, SALINITY, EQUATIONS OF MOTION, COMPUTER PROGRAMS

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE