An analytical model for ice-edge upwelling
作者:
G.J. F. Van Heijst,
期刊:
Geophysical & Astrophysical Fluid Dynamics
(Taylor Available online 1984)
卷期:
Volume 29,
issue 1-4
页码: 155-177
ISSN:0309-1929
年代: 1984
DOI:10.1080/03091928408248188
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
This paper presents an analytical, two-dimensional model of the wind-induced homogeneous circulation near the edge of an ice pack floating on the ocean surface. It is shown that a vertical shear layer arises under the ice edge, by which the wind-driven geostrophic motion in the open ocean is matched to the flow region underneath the ice. As in coastal upwelling models, this shear layer consists of a thinE1/2-layer inside a thickerE1/4-layer (Ebeing the Ekman number). Under certain conditions the shear layer produces a vertical mass flux from the bottom to the surface Ekman layer. Near the surface this upwelling flux is concentrated in the narrowE1/2-layer. Comparison with observations of upwelling at the edge of a polar ice pack shows good agreement.
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