Author(s): J. Szenti; I. Zsuffa
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Keywords: No Keywords
Abstract: The study reports on the morphology of the reach in question of the Danube River, about great ice-floods thereof, and about the methodology of piloting of icebreakers. The paper also discusses the directives for the prevention of ice floods by means of river regulation. The available qualitative data during hydrological preparatory work must be substituted by objective quantitative measurements. Therefore, measurements of ice thickness must be performed daily by icebreakers at 30 locations and the ice cover should also be registered by photogrammetric methods with 10 pictures taken daily from a certain high point. Measurements are evaluated in terms of mathematical statistics. Expected values, variances and confidence limits are calculated. The authors introduce the concept of ice yield which can be calculated with the help of subsequent photographs. As a result, a manual for forecasting the freeze-over of the river-reach has been developed.
Year: 1974