R/V Knorr cruise number 218 contributed to a joint Woods Hole Oceanographic Institution and Lamont Doherty Earth Observatory research program funded by the U.S. National Science Foundation that is investigating the characteristics, causes and consequences of interannual variations in the Northwest Atlantic's Deep Western Boundary Current (DWBC). The study is documenting temperature, salinity, tracer, and velocity variations of the DWBC by maintaining a 6-element moored array spanning the continental slope southeast of Woods Hole over a 10-year period, and repeatedly occupying a hydrographic section along this line extending into the Sargasso Sea. Cruise Kn218 was designed to recover the moored array and to re-occupy the hydrographic section along the array and extending southeast towards Bermuda, both for the last time. In addition, we agreed to test various sensors that colleagues wished to evaluate, deploy floats and recover two gliders operating on the continental shelf near our cruise track.
John M Toole (Woods Hole Oceanographic Institution Department of Physical Oceanography)