ABSTRACT:
Small-scale oceanic motions, in combination with
bottom topography, induce mean large-scale
along-isobaths flows. The direction of these mean
flows is usually found to be anticyclonic (cyclonic) over bumps
(depressions). Here we employ a
quasigeostrophic model to show that the
current direction of these topographically induced large-scale flows
can be reversed by the small-scale variability. This
result addresses the existence of a new bulk effect from the
small-scale activity that could have strong consequences on the
circulation of the world's ocean.
The cover of this issue of Geophys. Res. Lett. (Vol. 27, #6, March 15, 2000) is taken from our article.
