Accession Number : AD0665971

Title :   THE EFFECT OF TOPOGRAPHY ON THE YUCATAN CURRENT.

Descriptive Note : Master's thesis,

Corporate Author : TEXAS A AND M UNIV COLLEGE STATION DEPT OF OCEANOGRAPHY

Personal Author(s) : Molinari,Robert L.

Report Date : JAN 1968

Pagination or Media Count : 60

Abstract : The effect of topography on a portion of the Yucatan Current, east and northeast of the Yucatan Peninsula, during May of 1962, 1965 and 1966 is investigated. The month of May is chosen because the current is strong and the core of the current is readily discernible. A graphical method is used in solving the conservation of potential vorticity on the basis of actual topography and observed initial velocity. A numerical method based on a simplified topography is also used as a check on the subjectivity of the graphical method. Through this procedure a path of the current core is obtained. The computed path is then compared to the observed path. It is found that in the three cases the calculated paths agree quite well with the observed paths, from the Yucatan Strait north a distance of 2 degrees to approximately 23 degrees 30'N. The current paths studied all closely follow a particular isobath with meanders of small amplitude in this region. North of 23 degrees 30'N a more complicated topographic region is encountered. The calculated paths develop meanders with large amplitudes which seem to be in disagreement with the few observations in that region. This possible disagreement is discussed. (Author)

Descriptors :   (*OCEAN CURRENTS, *TERRAIN), (*OCEANOGRAPHIC DATA, GULF STREAM), OCEAN BOTTOM TOPOGRAPHY, WIND, EQUATIONS OF MOTION, VELOCITY, OCEANOGRAPHY, VORTICES, INTERPOLATION, THESES

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE