268
...... -. ... -··
UlNGITUDE
Theory of the Ventilated Thermocline
i
1
J
34.8~
Fig. 4.12.4. Salinity on density surfaces in the ventilated thermocline in the North Pacific. a. On the
25.5 a 9 surface. b. 26.0 a9 • c. 26.8 a9 • Dashed line, is the analytical prediction of the western pool
of unventilated fluid. Note the way in which the observed salinity contours in the subducting fluid
wrap around the region on the ventilated surfaces, a9 = 25.5 and 26.0 in the subtropical gyre. (From
Talley 1985)