Accession Number : ADA005054

Title :   Numerical Model for Prediction of Surface Currents in the Ocean.

Descriptive Note : Final rept. 1 Jan-1 May 74,


Personal Author(s) : Goldstein,Mark ; Niiler,Peter

Report Date : MAY 1974

Pagination or Media Count : 166

Abstract : An ensemble of 136 observations of surface currents on the western Florida Shelf near 82 deg 30 min W, 25 deg 30 min N is reported. The method uses aerial photography of the position of a fixed and a freely floating dye marker. A least-square estimate of the offshore tidal currents is made from this ensemble, and Pollard's (1971) model of wind-driven currents is used to estimate the residual wind-driven flow. The projected vector diagrams of the surface wind and the total currents are computed for October and November of 1971. The principal conclusions are: (a) It is observed that there exists a lateral coherence of currents in a 16-km radius on the shelf; (b) no persistent current is predicted or observed over this two-month period, and the projected vector diagrams form an ensemble of closed loops. Implications for the drift of objects and pollutants on the shelf are discussed.

Descriptors :   *Ocean currents, *Ocean surface, *Continental shelves, Florida, Mathematical models, Tidal currents, Aerial photography, Wind, Data acquisition, Flowmeters, Dyes, Least squares method, Computer programs, FORTRAN

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE