Abstract
Integrated aerial photography and GPR profiling has been used to explore the surface and subsurface evolution of braid bars within the South Saskatchewan River, Canada 2004-2007. Following a large flood in 2005, areas of a kilometre-long braid bar experienced incision and the creation of new unit bars. Subsequent low-magnitude, high-frequency flows during 2006 produced a further new central unit bar. Analysis of GPR profiles shows the presence of bar margin deposits in the subsurface relating to the unit bars produced in flood conditions and low-magnitude high-frequency flows. Quantitative comparisons of deposits reveal that the bar margin deposits formed during the large flood are similar in scale to the low-magnitude, high-frequency deposits with respect to the height and width of individual strata. However, stratal angles appear steeper in bar margin deposits produced by the low-magnitude, high-frequency events.
| Original language | English |
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| Title of host publication | Proceedings of the 12th International Conference on Ground Penetrating Radar |
| Place of Publication | UK |
| Pages | 0-0 |
| Number of pages | 1 |
| Publication status | Published - 1 Jan 2008 |
| Event | Proceedings of the 12th International Conference on Ground Penetrating Radar - Birmingham, UK Duration: 1 Jan 2008 → … |
Conference
| Conference | Proceedings of the 12th International Conference on Ground Penetrating Radar |
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| Period | 1/01/08 → … |