Translational Velocity of Warm Core Rings Relative to the Slope Water

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Abstract
Five warm Core rings were examined during short time intervals using thermal infrared satellite imagery. A total of 12 pairs of observations of these rings were made, all east of 72°W. The observations concentrated on the translational velocity of the rings and the mean velocity of the surrounding slope water. The mean translational velocity of the rings was found to be 8.5 ± 3.1 cm s−1 at 282° from north. The mean velocity of the surrounding slope water, determined from a combination of in situ observations with a depth weighting based on theoretical arguments, was 5.2 ± 0.3 cm s&−1 at 258°. The difference, i.e., the velocity of the ring relative to the slope water, was 4.6 ± 3.0 cm s−1 at 208°, or, in component form, these rings were found to move relative to the surrounding slope water with a mean northward component of 2.8 ± 1.7 cm s−1 and a mean westward component of 3.2 ± 2,3 cm s−1. The observations presented here are in disagreement with previous observations of ring displacements which s... Abstract Five warm Core rings were examined during short time intervals using thermal infrared satellite imagery. A total of 12 pairs of observations of these rings were made, all east of 72°W. The observations concentrated on the translational velocity of the rings and the mean velocity of the surrounding slope water. The mean translational velocity of the rings was found to be 8.5 ± 3.1 cm s−1 at 282° from north. The mean velocity of the surrounding slope water, determined from a combination of in situ observations with a depth weighting based on theoretical arguments, was 5.2 ± 0.3 cm s&−1 at 258°. The difference, i.e., the velocity of the ring relative to the slope water, was 4.6 ± 3.0 cm s−1 at 208°, or, in component form, these rings were found to move relative to the surrounding slope water with a mean northward component of 2.8 ± 1.7 cm s−1 and a mean westward component of 3.2 ± 2,3 cm s−1. The observations presented here are in disagreement with previous observations of ring displacements which s...

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