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Bedrock - Feedbacks

Bedrock - Feedbacks. Omid Arabnia. Richmond Field Station Trip. Feedbacks between a channel’s roughness, alluvial cover, width, and/or slope govern how the channel behaves given different sediment supplies. Slot i ncision (erosion). Sediment capture in slot (tools). Positive Feedback.

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Bedrock - Feedbacks

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  1. Bedrock - Feedbacks Omid Arabnia

  2. Richmond Field Station Trip Feedbacks between a channel’s roughness, alluvial cover, width, and/or slope govern how the channel behaves given different sediment supplies.

  3. Slot incision (erosion) Sediment capture in slot (tools) Positive Feedback Particle-bed impacts Sediment transport in slot

  4. (Johnson 2006)

  5. Richmond Field Station Trip (Finnegan 2007)

  6. (Finnegan 2007)

  7. Slot Incision Roughness Negative Feedback Sediment Deposition in slot Shear stress lost due to drag

  8. Roughness Slot Incision Shear stress lost due to drag Negative Feedback Sediment Deposition in slot Erosion away from slot

  9. References Finnegan, N. J., L. S. Sklar, and T. K. Fuller (2007), Interplay of sediment supply, river incision, and channel morphology revealed by the transient evolution of an experimental bedrock channel, J. Geophys. Res., 112, F03S11, doi:10.1029/2006JF000569. Johnson, J. P. and Whipple, K. X. (2007), Feedbacks between erosion and sediment transport in experimental bedrock channels. Earth Surf. Process. Landforms, 32: 1048–1062. doi: 10.1002/esp.1471.

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