Figure 4. River channel following ice jam failure; view is looking upstream.
Objective and approach
The ultimate objective of this work is to address the three sets of questions pre-
sented in the Needs for Research section. To do so required carrying out the follow-
ing tasks:
Determine the temporal sequence of events associated with ice jam formation,
failure, and reformation.
Identify the important processes and parameters involved in shoving and thick-
ening, and properly formulate the equations describing them.
Develop a numerical model, correctly representing the shoving and thicken-
ing of ice, for use in examining the formation and evolution of jams, including
freezeup and breakup jams. The model would be used further to investigate
1) the progression of freezeup jams formed at an ice boom; 2) the effects of a