Using bedform migration and orientation to infer sediment transport pathways in a sandy braided river

C. A. Unsworth, A. P. Nicholas, P. J. Ashworth, C. J. Simpson, J. L. Best, S. N. Lane, D. R. Parsons, G. H. Sambrook Smith

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The morphodynamics of sandy braided rivers are complicated by the presence of bedforms, which alter the spatial distribution of momentum, shear and sediment transport. These effects are not understood well and are typically simplified in morphodynamic models. This paper presents acoustic Doppler Current Profiler (aDcp) measurements of flow, and Unmanned Aerial Vehicle (UAV) photogrammetric surveys of a 600 m reach of the sandy braided South Saskatchewan River, Canada. The response of alluvial bedforms to varying flow direction, bed-slope and sediment availability is examined, and the use of bedform crestline tracking to estimate sediment transport direction is discussed.

Original languageEnglish (US)
Title of host publicationRiver Flow 2016
Subtitle of host publicationIowa City, USA, July 11-14, 2016
PublisherCRC Press
Pages1138-1143
Number of pages6
ISBN (Electronic)9781317289128
ISBN (Print)9781315644479
StatePublished - Jun 22 2016

ASJC Scopus subject areas

  • General Engineering

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