923
APRIL 2003
HENCH AND LUETTICH
FIG. 8. Circulation and momentum balances for Beaufort Inlet at midebb: (a) velocity flux (depth-averaged velocity multiplied
by total water column) vectors interpolated onto uniform 425-m grid for clarity, (b) free-surface elevation with 1-cm contour
intervals, (c) bathymetry with 4-m contour intervals, and (d)(k) shaded contours of individual momentum flux terms (see text
for description).
dient (Fig. 8f). This effect is most evident east of the
the ocean about 3 cm higher than the sound (Fig. 9b).
inlet (Fig. 8a) because of the relatively acute angle be-
Flow within the inlet and along the ocean shore has
tween the eastern headland and the ebb jet.
begun to move toward the sound (Fig. 9a). These along-
shore flows on the ocean side have gained sufficient
c. Slack before flood
strength to ``pinch off '' the high-momentum ebb jet that
contains water ejected from the sound during the pre-
At the start of flood the idealized inlet pressure gra-
dient between the sound and ocean has switched, with
vious ebb and continues to move offshore. The jet does
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