Articles | Volume 15, issue 5
Research article
31 May 2021
Research article |  | 31 May 2021

Analyses of Peace River Shallow Water Ice Profiling Sonar data and their implications for the roles played by frazil ice and in situ anchor ice growth in a freezing river

John R. Marko and David R. Topham

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Manuscript not accepted for further review
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Cited articles

Ashton, G. D.: Frazil ice, in: Theory of Dispersed Multiphase Flow, Academic Press, New York, USA, 271–289, 1983. 
Daly, S.: Frazil Ice. Frazil Ice, in: River Ice Formation, Committee on River Ice Processes, Edmonton, AB, Canada, 107–134, 2013. 
Dubé, M., Turcotte, B., Morse, B., and Stander, E.: Formation and inner structure of ice dams in steep channels, Proc. 17th Workshop on River Ice, 21–24 July 2013, Edmonton, AB, Canada, 70–93, 2013. 
Ettema, R., Karim, M. F., and Kennedy, J. F.: Laboratory experiments on frazil ice growth in supercooled water, Cold Reg. Sci. Technol., 10, 43–58, 1984. 
Ettema, R., Chen,Z., and Doering, J. C.: Making frazil in a large tank, Proc. 12th Workshop on Hydraulic of Ice-Covered Rivers and the Environment, 19–20 June 2003, Hanover, NH, USA, 13 pp., 2003. 
Short summary
Acoustic backscattering data from Peace River frazil events are interpreted to develop a quantitative model of interactions between ice particles in the water column and riverbed ice layers. Two generic behaviours, evident in observed time variability, are linked to differences in the relative stability of in situ anchor ice layers which develop at the beginning of each frazil interval and are determined by cooling rates. Changes in these layers are shown to control water column frazil content.