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Arctic Stream Scour: A Case History

by Arshud Mahmood, McClelland-EBA Inc, Anchorage, AK, USA,
James K. Barrett, McClelland-EBA Inc, Anchorage, AK, USA,
Michael G. Schlegel, McClelland-EBA Inc, Anchorage, AK, USA,



Document Type: Proceeding Paper

Part of: Cold Regions Engineering

Abstract:

A small arctic stream on the North Slope of Alaska was monitored through one hydrologic cycle. The flow rate of the stream and the progress of its erosion through a breach into an adjacent gravel pit were studied. The instrumentation installation included flow meters, stage recorders, thermistor strings and a survey grid of 2 multiplied by 2 stakes. The results of observations include the stream hydrograph during breakup, ground temperature profiles and photographic records. The results showed that the stream flow was affected by snow management and local weather. The areas with massive ground ice in the stream required a longer period for the headcut to proceed, followed by rapid progress through silt.

Subject Headings: River bank stabilization | Case studies | Streamflow | Scour | Rivers and streams | Flow measurement | Erosion | Arctic | Alaska | United States

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