Iron Enrichment Experiment (IRONEX) 1993
Stanton, Timothy P.
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We participated in the first open ocean iron enrichment study by establishing a Lagrangian reference frame for the experiment, and identifying the physical processes contributing to the dispersion of the SF6 tagged, iron enriched surface patch. A GPS navigated, drogued drifter buoy defined the center of an 8 by 8 km patch of trace iron and SF6 while the mixed layer patch was being formed over a 24 hour period. The buoy telemetered its position to a shipboard computer every 10 minutes allowing a Lagrangian reference frame to be established for the patch formation and subsequent patch mapping over the following 8 days. Continuous ADCP measurements and daily towyo CTD and thermal microstructure measurements helped define the processes responsible for vertical and horizontal spreading of the patch.
The Ocean Turbulence Laboratory in the Oceanography Department at the Naval Postgraduate School has an active research program addressing a range of ocean turbulent boundary layer problems. The group has developed observational systems for studying sub-ice boundary layers in polar regions, coastal internal waves, solitons and turbulence over the continental shelf, and the wave forced boundary bottom boundary layer over the inner shelf and surf zone.