Sediment Wave Evolution

When a steep watershed is logged or subjected to periodic intense storms, landslides and debris flows may be triggered, sending pulses of coarse sediment into gravel-bed rivers. What is the fate of this material?

In 1994, I performed a six-week flume experiment on the evolution of a sediment wave. I worked on this project with Tom Lisle of the US Forest Service and Hiroshi Ikeda of the Environmental Research Center at the University of Tsukuba, Japan.

We introduced a low amplitude triangular bed wave into a previously established stable channel and watched the bed wave slowly decay in amplitude through time. (It never migrated!)

In January, 1998, Tom Lisle and I plan a follow-up experiment at St. Anthony Falls Hydraulic Laboratory in Minnesota. We will collaborate with Gary Parker and Yantao Cui of the University of Minnesota in Minneapolis.

My Research Interests



Geology Department
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University of Delaware
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Last Updated 11/97