Physics
Scientific paper
Aug 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24.2035h&link_type=abstract
Geophysical Research Letters, Volume 24, Issue 16, p. 2035-2038
Physics
20
Oceanography: General: Benthic Boundary Layers, Oceanography: General: Continental Shelf Processes, Oceanography: Physical: Fronts And Jets, Oceanography: Physical: Turbulence, Diffusion, And Mixing Processes
Scientific paper
Convergent flow at the foot of the shelfbreak front in the Middle Atlantic Bight has been detected using a dye tracer, Rhodamine-WT, injected into the bottom boundary layer. The observations substantiate model simulations by Chapman and Lentz (1994) of convergent flow in the vicinity of the front which would be very difficult if not impossible to detect with conventional moored current measurements. By following the dispersal of the dye patch over a 4 day period Lagrangian velocities of the order of 0.015 m/s with respect to the front were resolved even as the frontal boundary was displaced ~12km onshore. The water-following properties of the dye tracer provides a useful technique for studying the small-scale circulation and mixing at the frontal boundary.
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