Accession Number : AD0600828

Title :   SURFACE CIRCULATION IN NORTHEASTERN GULF OF MEXICO.

Descriptive Note : Technical rept. no. 1, Sep 60-Oct 62

Corporate Author : GULF COAST RESEARCH LAB OCEAN SPRINGS MISS

Personal Author(s) : Drennan,Kirby L.

Report Date : 01 DEC 1963

Pagination or Media Count : 116

Abstract : The general features of the surface circulation in the northeastern Gulf are presented from an analysis of surface density distribution and an extensive drift bottle study. Results of drift bottle study are based on 6,400 recoveries. Twenty cruises were conducted in the regions east and south of the Mississippi Delta, during the period September 1960-October 1962. Data obtained at this time indicate a surface flow of approximately 0.7 kt. to the east and northeast during March-June. Hydraulic heads formed by discharge from eastern Passes extend some 70-90 miles seaward. Convergence lines associated with strong density gradients are commonly found along southern boundary of these areas. Surface circulation for the area is depicted as follows: An eastward flow during spring and early summer, which diverges into northeast and southeast flow at varing distances east of the Delta depending on local winds and river discharge; a southwest flow over continental shelf during late summer and fall, which appears to continue westward and into southwestern Gulf. The existence of the southeast flowing loop current also is indicated in the offshore region southeast of the Delta at this time. Flow during winter months is to the southeast and appears to be a result of the northward migration of the loop current. (Author)

Descriptors :   (*OCEAN CURRENTS, MEXICO GULF), (*MEXICO GULF, OCEAN CURRENTS), (*OCEANOGRAPHY, MEXICO GULF), WIND, RIVERS, TEMPERATURE, SALINITY, OCEANS, SURFACE PROPERTIES, OCEANOGRAPHIC EQUIPMENT, OCEANOGRAPHIC DATA, MAPS

Distribution Statement : APPROVED FOR PUBLIC RELEASE