Author(s): Michael G. Ferrick; Patricia B. Weyrick
Linked Author(s): Michael G. Ferrick
Keywords: No Keywords
Abstract: A time series of ice velocity data was obtained from videotape of the initial 300 s of motion at a point during a controlled dynamic ice breakup of the Connecticut River. A polynomial fit to the data provides a smooth velocity-time relationship that eliminates the noise in the data, and identifies the primary ice motion. The hydraulic radius associated with the ice cover changes continuously with the ice velocity. We expand the analysis by assuming a constant breaking front speed and consistent ice velocity behavior through a reach local to the measurement site. The results obtained include the total ice acceleration, the equilibrium ice velocity as a function of bank stress, the time-varying bank resistance at the measurement location, the convergence behavior of the moving ice sheet and the influence of breaking front speed on this behavior, and the ice continuity implications of these results at the breaking front.
Year: 1990