Author(s): G. P. Williams
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Abstract: Frazil ice caused the complete blockage of a large industrial water intake twice in about forty years. Both cases occurred during spring break-up when the river was essentially open, with water temperatures close to 0°C. Weather conditions were similar in both cases, with wind speeds averaging 9 m/sec or greater, air temperatures about -7°C, and extremely low dew-point temperatures -17°C. These cases illustrate the need to be aware of potential frazil problems at sites where frazil is not a common occurrence.
Year: 1972