The field experiment is comprised of two components:
1) An array of moored profilers, installed in September 2010, is measuring the property and flow fields on the southeastern flank of Bermuda Rise - a primary pathway for the interior circulation. The 6 moorings will directly measure water properties and velocities to quantify transports through the array. Combining these data with profiles from a mooring near 25°N, 52°W (maintained by the U.K. RAPID-WATCH program) will quantify the northward transport of bottom waters between Bermuda and the Mid Atlantic Ridge. Shipboard hydrography and sampling for tracers (CFCs, I129 and nutrients) are being used to ascertain the watermass origins of these flows.
2) A shipboard survey aboard R/V Knorr (15May - 14June 2011) to obtain microstructure and velocity profiles (using the High Resolution Profiler), plus detailed bathymetry (SeaBeam) across a broad region, including several suspected hotspots of turbulent mixing. These data will be used to map the diapycnal mixing field and to construct improved parameterizations for use in ocean models.