Author(s): M. Ferrick; G. Lemieux; N. Mulherin; W. Demont
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Keywords: No Keywords
Abstract: We have formulated a theory of dynamic ice breakup that is based on the data and observations presented in part 1 of this paper and additional observations of breakup on other rivers. The hydrodynamic forces that cause a dynamic breakup depend on the flow energy gradient, and resistance is a function of ice strength and ice cover support. In this paper we focus on the factors that affect the energy gradient, and we treat ice strength and breakup empirically. Data that directly test the theory and quantify the relationship between river waves and ice breakup observed in the field were obtained by adapting a numerical model to the Hudson River study reach. The theory provides a basis for understanding the wide spectrum of observations of ice cover breakup and ice jam formation and release.
Year: 1986