Figure 1. Schematic of circulation patterns in the deep western North
Atlantic (updated from Schmitz and McCartney [1993] by M.S. McCartney,
pers. comm. to L. Keigwin, 1995). The thin lines represent streamlines of
two recirculating gyres with approximate transport in Sverdrups (1 Sv =
106 m3/s). Thick lines represent generalized
flow direction of AABW and NADW, which contribute to the Deep Western
Boundary Current (DWBC). The stippled pattern marks the region marked by
high surface eddy kinetic energy (EKE), deep EKE, and deep suspended
sediment. Note that in this scheme the southern recirculating gyre, over
the Bermuda Rise, is the mixing zone for northern and southern origin
waters and that true "NADW" is formed in that mixing zone.
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