SFTRE2 was the sampling phase of the experiment, occurring between October 29 and December 4, 2001 on the R/V Seward Johnson, leg 01-12.
SFTRE was a combined tracer and HRP experiment, being conducted in an region of thermohaline staircase features prevalent in the depth range of 200 - 450 meters. The goal of this experiment is to quantify the intensity of vertical mixing in a thermohaline staircase. To do this, XBTs were used to map the extent and levels of the staircases, then tracer was injected on the 10.0 degree isotherm in a 20 km patch around 13N, 54W. The High Resolution Profiler (HRP) was used to make instantaneous estimates of the rates of diffusive mixing during the injection period.
The first part of the SFTRE experiment took place between January 15 and Februaly 12, 2001 on the R/V Oceanus, leg 365-2. To find out more about the January injection cruise, click here.
The goal of the second cruise was to sample the vertical and horizontal extent of the tracer patch and to make additional HRP profiles to quantify the diffusion and turbulent mixing rates.
For more about the SFTRE-2 cruise, click here.
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This research was supported by the U.S. National Science Foundation by a grant (number OCE-0350743) to the Woods Hole Oceanographic Institution. Any opinions, findings and conclusions or recommendations expressed here are those of the principal investigators and do not necessarily reflect the views of the National Science Foundation