Rw. Houghton et M. Visbeck, UPWELLING AND CONVERGENCE IN THE MIDDLE ATLANTIC BIGHT SHELFBREAK FRONT, Geophysical research letters, 25(15), 1998, pp. 2765-2768
Convergent and upwelling circulation within the shelfbreak front in th
e Middle Atlantic Eight are detected using a dye tracer injected into
the bottom boundary layer at the foot of the front. From the three day
displacement and dispersion of two dye injections within the front we
infer Lagrangian isopycnal (diapycnal) velocities and diffusivities o
f 2 x 10(-2) m/s (4 x 10(-6) m/s) and 9 m(2)/s (6 x 10(-6) m(2)/s). Th
ese results substantiate model predictions of Chapman and Lentz [1994]
and previous dye tracer observations by Houghton [1997].