报告题目：River ice processes and ice jam assessment
报告人简介：Tomasz Kolerski is the Associate Professor in the Department of Geotechnics and Hydraulic Engineering, under the discipline of Civil Engineering and Transport of Gdansk University of Technology, Poland since 01-11-2017. From January 2022, Tomasz serves as the head of Hydraulic Engineering group within the Department. He has been working on ice dynamics and simulating its process implementing mathematical modelling. He has scrutinized a number of research works on ice Vistula River ice jamming and ice passage through reservoirs. He previously has been the research scientist at Clarkson University from 2006 to 2010. During this period, he worked on the mathematical CRISSP2D model of ice simulation and performed studies on bed changes of St. Clair River and ice boom on rivers and lakes. Prior to that he was a research specialist and PhD assistant in Geoscience and Marine Research and Consulting and Institute of Hydro-Engineering, Polish Academy of Science, respectively. As the benefit of hindsight, Tomasz appreciates his international cooperation with numerous groups, seeking for their knowledge to be applied in his Polish projects. Currently, he is an active person in the IAHR Committee on Ice Research and Engineering, working as the chair.
Ice formation can affect many fields of hydraulics, hydrology, civil engineering, ship design and ecology such as for example: ice jamming and flood protection, ice damage on shoreline and onshore facilities, sediment transport problems, design of Icebreakers and arctic ships and habitat improvements projects and river restoration in cold regions. From the abovementioned, the ensuring and improving flood protection is one of the most important factors to determine sustainable and stable social and economic development in regions and countries. Mathematical models can supplement and help to understand the physical processes of river ice, and at the same time, they can also be a tool to support the design of engineering projects. They have become valuable tools for exploring the research area of river ice, such as understanding the physical processes and simulating river ice phenomena, and even forecasting ice floods. Such a model can be used to provide a continuous description of river ice development based on a limited amount of field data. A common issue in engineering practice is to estimate the ice congestion and jamming potential of rivers due to planned river engineering works or new run-of-river reservoirs and diversion dams. The task most often comes down to determining to what extent hydrotechnical structures will affect ice transport, and whether or not they will not stop the ice run during freeze-up and during spring or mid-winter breakup. The presentation will first introduce to ice processes in inland waters and later will refer to recent engineering projects conducted in Poland within the farmwork of the European Union Water Directive.