Characteristics of the turbulent oceanic boundary layer under sea ice. Part 2: Measurements in southeast Hudson Bay
In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963; e-ISSN 1879-1573, more
Also appears in:Nihoul, J.C.J.; Djenidi, S. (1991). Ice covered seas and ice edges: Physical, chemical and biological processes and interactions - Proceedings of the 22th International Liège Colloquium on Ocean Hydrodynamics. Journal of Marine Systems, 2. Elsevier Science Publishers: Amsterdam. 520 pp., more
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| Authors | | Top |
- Shirasawa, K.
- Ingram, R.G.
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| Abstract |
Surface intrusions of freshwater from rivers and buoyancy effects caused by surface freezing or ice melt were found to play an important role in modifying turbulent processes in coastal regions. Measurements of the three dimensional current regime in the oceanic boundary layer taken under fast ice in southeast Hudson Bay during the ice melt season are discussed. Mixing processes just below the ice-water interface are affected by tidal variability, ice type and distribution, low frequency current amplitude and buoyancy characteristics in the boundary layer adjoining the sea ice. Changes in turbulence intensities are shown as functions of current speed and of depth relative to the interface, within the water column in neutral stability. Time series of the current speed and momentum flux sampled in the under-ice boundary layer are shown. |
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