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Monroy Silvera, Julio and Lonin, Serguei A. (2017) Detection, monitoring and kinematic analysis of a mesoscale turn based on in situ observations and satellite altimetry data in the Colombian Caribbean Sea basin Boletín Científico CIOH (35). pp. 13-24. ISSN 2215-9045. DOI https://doi.org/10.26640/22159045.429

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Abstract

Some physical variables were analyzed in the southwest Caribbean Sea during the lifetime of a cyclonic eddy detected initially by in situ observations with seven CTD profiles. After verifying satellite altimetry data, it was noted that this eddy showed a sea level anomaly of -0.1 m within the transect of CTD stations and -0.2 m in its center. It was possible to observe a vertical influence from the cyclonic eddy down to a depth that ranged between 350 and 400 m, with surface currents between 20 and 70 cm·s-1. Using an algorithm to detect and track eddies’ centers, it was possible to establish an approximate lifetime of 40 days and its birth in an instability between the flow of the Panamá – Colombia Gyre (GPC) and a previous eddy that transited through the center of the basin days before. Likewise, it was determined that the eddy in its firsts days moved north with a velocity of 7.45 km/day, which afterwards accelerated up to 21.1 km/day while moving on the NW between days 10 and 20 (when it entered the main flow of the Caribe current). This eddy was last tracked moving in SW direction with a velocity of 16.94 km/day, finally delivering its kinetic energy to the GPC, to the southeast of Providencia Island.

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Item Type: Article
Uncontrolled Keywords: Mesoescala. Eddy. Hidrodinámica. Vorticidad
Geographical coverage : Colombia. San Andrés Isla. Cayo Bajo Nuevo
Depositing User: Dirección General Marítima
ISSN: 2215-9045
Identification Number: https://doi.org/10.26640/22159045.429

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