Observations on break-up of river ice in north central Alberta

The break-up process on the North Saskatchewan and Pembina Rivers in north central Alberta during 1969 is discussed.It is shown that the maximum size of moving ice can approach the river's width and have a length of four or five times this depending upon channel geometry. A case of radial crack...

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Bibliographic Details
Published in:Canadian Geotechnical Journal
Main Author: Nuttall, J. B.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1970
Subjects:
Online Access:http://dx.doi.org/10.1139/t70-056
http://www.nrcresearchpress.com/doi/pdf/10.1139/t70-056
Description
Summary:The break-up process on the North Saskatchewan and Pembina Rivers in north central Alberta during 1969 is discussed.It is shown that the maximum size of moving ice can approach the river's width and have a length of four or five times this depending upon channel geometry. A case of radial cracking of an ice sheet at a bridge pier when the sheet was subject to the drag force of high velocity river flow is reported. The rate of progress of a break-up wave on the Pembina River was found to have been approximately that of a free surface water wave of the same height.