Print Email Facebook Twitter Hydrographic and Biological Survey of a Surface-Intensified Anticyclonic Eddy in the Caribbean Sea Title Hydrographic and Biological Survey of a Surface-Intensified Anticyclonic Eddy in the Caribbean Sea Author van der Boog, C.G. (TU Delft Environmental Fluid Mechanics) de Jong, M. F. (NIOZ Royal Netherlands Institute for Sea Research) Scheidat, M. (Wageningen University & Research) Leopold, M. F. (Wageningen University & Research) Geelhoed, S. C.V. (Wageningen University & Research) Schulz, K. (NIOZ Royal Netherlands Institute for Sea Research) Pietrzak, J.D. (TU Delft Environmental Fluid Mechanics) Katsman, C.A. (TU Delft Environmental Fluid Mechanics) Dijkstra, H.A. (Universiteit Utrecht) Date 2019 Abstract In the Caribbean Sea, mesoscale anticyclonic ocean eddies impact the local ecosystem by mixing of low salinity river outflow with the nutrient-rich waters upwelling along the Venezuelan and Colombian coast. To gain insight into the physics and the ecological impact of these anticyclones, we performed a combined hydrographic and biological survey of one Caribbean anticyclone in February 2018. We found that the anticyclone had a radius of 90 km and was surface intensified with the strongest velocities (0.72 m/s) in the upper 150 m of the water column. Below, isopycnal displacements were found down to 700 dbar. The core of the anticyclone entrained waters from the Orinoco River plume and contained slightly elevated chlorophyll concentrations compared to the surroundings. At the edge of the anticyclone we observed higher densities of flying fish but not higher densities of predators like seabirds and cetaceans. Below the surface, a strong temperature inversion (0.98 °C) was present within a barrier layer. In addition, we found thermohaline staircases that originated from double diffusion processes within Tropical Atlantic Central Water. Subject anticyclonebarrier layerCaribbean Seaecologyhydrographicthermohaline staircases To reference this document use: http://resolver.tudelft.nl/uuid:92a296ad-626e-4bf0-b969-cd8774d32be6 DOI https://doi.org/10.1029/2018JC014877 ISSN 2169-9275 Source Journal Of Geophysical Research-Oceans, 124 (8), 6235-6251 Part of collection Institutional Repository Document type journal article Rights © 2019 C.G. van der Boog, M. F. de Jong, M. Scheidat, M. F. Leopold, S. C.V. Geelhoed, K. Schulz, J.D. Pietrzak, C.A. Katsman, H.A. Dijkstra Files PDF Boog_et_al_2019_Journal_o ... Oceans.pdf 4.74 MB Close viewer /islandora/object/uuid:92a296ad-626e-4bf0-b969-cd8774d32be6/datastream/OBJ/view