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DYNAMICAL OCEANOGRAPHY
sketch of the Ekman pumping in a basin where the flow is forced by a prescribed
wind stress. In the region where w E < 0, liquid with surface density values is
pumped into the geostrophic region and then advected through this region. Here,
the vertical scale can be set pure by advection, we have case (B1) above. In the
region where w E > 0, liquid with a certain density enters the Ekman layer and
hence in general cannot match to a prescribed surface density distribution. Here
a balance according to case (B2) above is set between advection and mixing on a
small scale δ D above the advectively controlled flow below (under the conditions
that mixing is still small).
DYNAMICAL OCEANOGRAPHY
sketch of the Ekman pumping in a basin where the flow is forced by a prescribed
wind stress. In the region where w E < 0, liquid with surface density values is
pumped into the geostrophic region and then advected through this region. Here,
the vertical scale can be set pure by advection, we have case (B1) above. In the
region where w E > 0, liquid with a certain density enters the Ekman layer and
hence in general cannot match to a prescribed surface density distribution. Here
a balance according to case (B2) above is set between advection and mixing on a
small scale δ D above the advectively controlled flow below (under the conditions
that mixing is still small).