Assessment of Turbulent Mixing Associated With Eddy?Wave Coupling Based on Autonomous Observations From the Arctic Canada Basin

Interaction between mesoscale eddies and near-inertial internal waves can contribute to enhanced turbulence mixing but quantitative knowledge from in situ observations is still lacking. This study reveals how eddy/near-inertial wave interactions (ENIs) affect the variability of turbulent ice-covered Canada Basin Arctic Ocean. We use data five Ice-Tethered Profiler with Velocity (ITP-V) systems that autonomously obtained vertical profiles horizontal velocity as well temperature salinity, which enabled quantification ENI-caused using a fine-scale parameterization. From ITP-V 2013–2015, 67 anticyclones were detected, 90% had deep core at 150–250 m depth. The remaining shallow core, typically embedded Pacific Summer Water (PSW). Just over one third showed evidence ENI amplitude (NIW) near eddy cores. For these cases, parameterized dissipation rate was O (10?10–10?8 W kg?1), larger estimates being several orders magnitude greater than background level. eddies, process largely be accounted for by classical theory, NIWs are trapped inside negative relative vorticity anticyclones. eddy, NIW signal greatest below core. postulate vertically elongated system cannot constrained within such small-cored eddies. It also interpreted enhancement supported isopycnal slope PSW through its geostrophic shear.