Accession Number:

ADA056221

Title:

Measurement of Surface Currents Around an Eddy.

Descriptive Note:

Technical note,

Corporate Author:

ROYAL AUSTRALIAN NAVY RESEARCH LAB EDGECLIFF

Personal Author(s):

Report Date:

1977-10-01

Pagination or Media Count:

27.0

Abstract:

A closed eddy off East Australia was surveyed during the period 8-13 December 1974 by HMAS KIMBLA. A comparison of dead reckoning data with a series of satellite navigation fixes yielded a series of total current measurements around the eddy. These observed values are compared to the current vectors expected from the measured dynamic height topography. The comparison gives the average enhancement factor applicable to normal geostrophic current due to centrifugal force around the eddy. The factor 1.25 is shown to be consistent with the eddy dimensions and related to the Rossby radius of deformation. The data are also analysed for a mean barotropic flow, giving a value for the mean eddy motion of 5 or - 5 cmsec to 045 deg or - 45 deg. Author

Subject Categories:

  • Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE