151. Fine-scale Modeling of Water Dynamics on the Shelf and Continental Slope in the Antarctic.
- Author
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Golovin, P. N. and Molchanov, M. S.
- Subjects
- *
CONTINENTAL shelf , *CONTINENTAL slopes , *DENSITY currents , *PROBLEM solving , *GEOMETRIC modeling , *ICE - Abstract
The use of the Fluidity-ICOM model in a full non-hydrostatic formulation enables the correct investigation of fine-scale water dynamics and water transformations on the Antarctic shelf and the continental slope. A possibility of solving problems with high order of accuracy in models is determined by the use of a three-dimensional adaptive unstructured mesh with automatic refinement to given scales. The modernization of the graphical model output has made it possible to visualize reliably the details of simulated hydrophysical process development, to obtain the numerical estimates of parameters of these processes, and to verify them against unique field observation data. An original three-dimensional numerical experiment was held in the area of a shelf glade with an open water surface. In this case, the real salt (buoyancy) flux is specified, which is caused by the in-water ice formation in the glade and obtained from the actual atmospheric forcing. As a result, the convective circulation was correctly simulated as a process of forming dense water on the shelf, which then flows down the shelf and the continental slope in the form of discrete density currents. Similarity of the model geometric, dynamic, and hydrophysical characteristics of cascading with the characteristics obtained from the analysis of field observations is noted. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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