Journal of Glaciology · 1977 · 16 citations · 1 references
Natural SciencesEarth SciencesOceanographyCryosphere StudiesGlaciologyPhysical OceanographyIce DeformationIce DynamicsIce-ocean InteractionsSea Ice DriftSea Ice PhysicsSea Ice StudiesFast IceHorizontal Movement AnalysisPolynya DynamicsSea Ice MechanicsSea Ice PolynyasStress-strain AnalysisStress-strain Relations
The horizontal movement of fast ice is crucial for applied sea‑ice mechanics. The study presents a case analysis of fast‑ice dynamics in the North Water polynya. The case study measured wind, current, temperature, and thickness to explain the small displacements of fast‑ice arches separating the polynya from surrounding ice. Measured displacements of the fast‑ice arches were small, confirming that they block large sea‑ice influx into the polynya.
Abstract The understanding of the horizontal movement of fast ice is important for applied sea-ice mechanics. A case study, carried out in conjunction with a polynya known as North Water, is presented in this paper. The displacements of the fast-ire arches which separate the polynya from the surrounding ice-covered sea, were measured and found to be small. It is, therefore, confirmed that these arches prevent the influx of large quantities of sea ice into the polynya. The results are then explained in terms of the external forces (wind and current), the stress- strain situations and some physical characteristics (temperature and thickness) which were measured simultaneously.
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