REVIEW ON THE INTERACTION BETWEEN SEA ICE AND WAVES/CURRENTS

With global warming and the increasing frequency of Arctic activities, the interaction between sea ice and waves/currents has become an attractive research issue at home and abroad. The existence of sea ice changes the propagation characteristics and dispersion relationships of waves, and also changes the boundary conditions of ocean currents, inducing vortex shedding at the lower surface of the sea ice. The sea ices generate and extinct, fracture, overlap and accumulate under the effects of waves and currents. There are several difficulties in studying the interaction between sea ice and waves/currents. The first is the construction of sea ice model appropriately, which needs to consider the differences of the types and properties of sea ice in different cold regions. The distributions of sea ice also should be taken into account in the sea ice model. The second is the coupling problem between sea ice and water. The boundary of sea ice affects the exchange of momentum and energy between sea ice and water. The boundary conditions of sea ice should be dealt with appropriately in terms of ice sheet and ice floes. There are many fracture modes of sea ice, but the sea ice may have complex fracture modes with coexistence of many different fracture modes under the action of sea ice and water coupling. The third is the construction of wave-current joint field. At present, there is no efficient method to construct the wave-current joint field, which leads to lack of relevant research on interaction for sea ice and wave-current joint field to understand the physic problem. Therefore, this paper reviews and discusses the research status and technical difficulties of interactions between sea ice and wave, current and wave-current fields. The problems that can be further studied in the future are predicted and the preliminary ideas are put forward for reference.