Ice Accumulation Rate and the Geometry of Ice Jams in River Bendsby Gilberto E. Urroz, (A.M.ASCE), Utah State Univ, Logan, United States,
Robert Ettema, (M.ASCE), Utah State Univ, Logan, United States,
Abstract: Experiments on development of ice jams in river bends were performed in a 2.60-m-wide bend flume with a sand bed and 5-mm-diameter plastic beads simulating ice particles. The ice particles were released into the bend flume from a holding area located upstream. The result of two experiments performed at different ice feed rates suggest that rate of ice accumulation plays a considerable role in determining ice geometry. With the same amount of ice involved, the jam formed through a unsteady rate of ice accumulation was thicker and shorter that was that accumulated at a steady rate. Jam thickness contours and jam profiles are presented and discussed.
Subject Headings: Rivers and streams | Channel bends | Ice jams | Geometrics | Flumes | Particles | Streamflow
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