Tracking anticyclonic open-sea eddies in the Algerian basin by altimetry

Jordi Isern-Fontanet; Jose de Jesus Salas Perez; S. Ruiz; Jordi Font; C. Millot

doi:10.1117/12.411709

22 December 2000 Tracking anticyclonic open-sea eddies in the Algerian basin by altimetry

Jordi Isern-Fontanet, Jose de Jesus Salas Perez, S. Ruiz, Jordi Font, C. Millot

Proceedings Volume 4172, Remote Sensing of the Ocean and Sea Ice 2000; (2000) https://doi.org/10.1117/12.411709
Event: Europto Remote Sensing, 2000, Barcelona, Spain

Abstract

The evolution of an open-sea eddy, previously detected by IR imagery, is studied using Sea Level Anomalies (SLA) maps. This evolution is compared with the information given by surface drifters deployed along eddy diameter, during ALGERS98 cruise in western Mediterranean. Preliminary results show a good agreement between the structure observed form drifters trajectories and the velocity field obtained from SLA maps assuming a geostrophic balance. The center of the eddy is taken as the grid point of maximum SLA. Differences between this center and the center given by the drifters seen to be due to the precision of the grid used by altimetric maps. From the position of the centers the propagation velocity of the eddy is obtained. The mean velocity obtained from altimetry is 2.7 km/day which is coherent with previous studies.

Citation Download Citation

Jordi Isern-Fontanet, Jose de Jesus Salas Perez, S. Ruiz, Jordi Font, and C. Millot "Tracking anticyclonic open-sea eddies in the Algerian basin by altimetry", Proc. SPIE 4172, Remote Sensing of the Ocean and Sea Ice 2000, (22 December 2000); https://doi.org/10.1117/12.411709

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