Program and Agenda

Abstract

EDDY-MEAN INTERACTION DURING LOOP CURRENT EDDY FORMATION

The formation of three Loop Current Eddies, Ekman, Franklin, and Hadal, during the period April 2009 through November 2011 was observed by an array of moored current meters and bottom mounted pressure equipped inverted echo sounders. The broad extent of the array, nominally 89°W to 85°W, 25°N to 27°N and its mesoscale resolution, 30 to 50 km, enabled quantitative mapping of the regional circulation. During Loop Current Eddy detachment and formation events, a marked increase in lower-layer eddy kinetic energy occurred coincident with the development of a large-scale meander along the northern and eastern parts of the Loop Current. Lower-layer eddies developed in a pattern consistent with developing baroclinic instability. The interaction between upper and deep was quantified by evaluating the mean eddy potential energy budget. Largest down-gradient heat fluxes were found along the eastern side of the Loop Current. Where strong, the horizontal down-gradient eddy heat flux (baroclinic conversion rate) nearly balanced the vertical down-gradient eddy heat flux indicating that eddies extracted available potential energy from the mean field and converted eddy potential energy to eddy kinetic energy

ePoster:

Authors

Donohue, K. A., University of Rhode Island, USA, kdonohue@mail.uri.edu

Watts, D. R., University of Rhode Island, USA, randywatts@mail.uri.edu

Hamilton, P., Sciences Applications International Corporation, USA, peter@raleigh.leidos.com

Leben, R. R., University of Colorado, USA, leben@colorado.edu

Details

Poster presentation

Session #:058
Date: 2/26/2014
Time: 16:00 - 18:00
Location: Poster/Exhibit Hall

Presentation is given by student: No

PosterID: 2901