Accession Number:

ADA114782

Title:

Satellite and Hydrographic Observations of Low-Frequency Wave Motions Associated with a Cold Core Gulf Stream Ring

Descriptive Note:

Journal article

Corporate Author:

TEXAS A AND M UNIV COLLEGE STATION DEPT OF OCEANOGRAPHY

Personal Author(s):

Report Date:

1981-03-20

Pagination or Media Count:

9.0

Abstract:

Thermal infrared data from the NOAA polar orbiting satellite and hydrographic observations from surface ships are used to estimate the eccentricity and the rotation rate of wavelike perturbations around the circumference of a Gulf Stream cyclonic eddy in Apr 1977. From the satellite data, the rotation rate is estimated at omega 4.4 or - 0.1 x 10 expn -6 s expn -1 for the period Apr 8-16. Estimates of omega are obtained from the trajectory of satellite-tracked drifters and from changes in eth sea surface temperature fields determined from expendable bathythermograph trace XBT surveys. A simple Eady model suggests the perturbations are stable modes of azimuthal wave number 2.

Subject Categories:

  • Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE