LAPCOD
Lagrangian Analysis and Prediction of Coastal and Ocean Dynamics
LAPCOD VII :: Venice 2019 :: 17-21 June 2019
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Scale-dependent dispersion and structure functions near a density front

Henry Chang, Helga Huntley, Denny Kirwan, Dan Carlson
University of Delaware
(Abstract received 04/03/2019 for session A)
ABSTRACT

Density fronts are known to be areas in the ocean with high production and dissipation of kinetic energy (D'Asaro et al. 2011, McWilliams 2016). Here we investigate the associated dispersion and structure functions near a front from scales of tens of kilometers down to meters -- smaller than from previously reported open ocean observations. This is made possible through the analysis of small scale driftcard measurements resolved down to sub-meter and sub-minute scales, along with surface drifter trajectories, x-band radar velocity fields, and aerial infrared temperature fields, all obtained near the mouth of the Mississippi River in the northern Gulf of Mexico during CARTHE's LASER field campaign. These results are compared with statistics from an area without fronts and with classical results (i.e. Okubo 1971).