ES31A:
Morphodynamics of Semialluvial Rivers I

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Session Title - en français: Morphodynamique des rivières semi-alluviales I

Session ID#: 6096

Session Description:
Many rivers are semi-alluvial in that they are incising into non-alluvial substrate such as consolidated clay, glacial till, or bedrock, yet portions of the channel bed may be covered with a surficial veneer of alluvial material. Such rivers are common in upland areas and regions influenced by glaciation. Although it is understood that for these rivers the transport mechanics of the parent substrate and the surficial alluvium determine the morphology of the channel and available habitat, the interactive transport mechanics of these two source materials are poorly known, thus predictive  models for semi-alluvial channel morphology remain elusive . This session will focus on recent advances in the morphodynamics of semi-alluvial rivers across a range of scales, including flow-sediment interactions and sediment transport mechanics, hydraulic geometry, planform morphology, available habitats, and channel evolution.
OSPA Liaison:  Bruce MacVicar, University of Waterloo, Civil and Environmental Engineering, Waterloo, ON, Canada
Chairs:  Colin D Rennie, University of Ottawa, Department of Civil Engineering, Ottawa, ON, Canada and Susan J Gaskin, McGill University, Civil Engineering, Montreal, QC, Canada
Primary Convener:  Colin D Rennie, University of Ottawa, Department of Civil Engineering, Ottawa, ON, Canada
Conveners:  Susan J Gaskin, McGill University, Civil Engineering, Montreal, QC, Canada and Bruce MacVicar, University of Waterloo, Civil and Environmental Engineering, Waterloo, ON, Canada
Index Terms:

1815 Erosion [HYDROLOGY]
1825 Geomorphology: fluvial [HYDROLOGY]
1856 River channels [HYDROLOGY]
1862 Sediment transport [HYDROLOGY]
Co-Sponsor(s):
  • B - Biogeosciences
  • H - Hydrology
  • SG - Sedimentary Geology and Paleobiology

Abstracts Submitted to this Session:

ES31A-01
Morphology and Sediment Transport in Semi-alluvial Channels (Invited) (35170)
Peter Ashmore, University of Western Ontario, Geography, London, ON, Canada
ES31A-02
Longitudinal variations in channel morphology in postglacial watersheds of the northeastern United States (Invited) (34443)
Noah P Snyder, Boston College, Department of Earth and Environmental Sciences, Chestnut Hill, MA, United States
ES31A-03
Three Quarters Alluvial: Constraining the Semi-Alluvial River Condition in the Glacial Landscape of Southern Ontario (Invited) (35084)
Roger TJ Phillips, University of Toronto, Earth Sciences, Toronto, ON, Canada and Joseph R Desloges, University of Toronto, Geography, Toronto, ON, Canada
ES31A-04
Development of sand-bedded rivers in glaciated, Southern Ontario (34288)
Anna Marie Megens and Joseph R Desloges, University of Toronto, Geography, Toronto, ON, Canada
ES31A-05
The Dynamics of Glacial Till Erosion: Hydraulic Flume Tests on Samples from Medway Creek, London, ON (33991)
Leila Anne Pike1, Peter Ashmore2 and Susan J Gaskin1, (1)McGill University, Civil Engineering, Montreal, QC, Canada, (2)University of Western Ontario, Geography, London, ON, Canada
ES31A-06
Urbanization, Channel Adjustment, and Restoration of a Suburban Semi-Alluvial Creek: the Case Study of Wilket Creek in Toronto (35685)
Bruce MacVicar1, Margot Chapuis2, Vernon Bevan2, Emma Buckrell2, Andre Roy2, John Parish3, Ryan Ness4 and William Snodgrass5, (1)University of Waterloo, Civil and Environmental Engineering, Waterloo, ON, Canada, (2)University of Waterloo, Waterloo, ON, Canada, (3)Matrix Solutions, Missisauga, ON, Canada, (4)Toronto Region Conservation Authority, Toronto, ON, Canada, (5)City of Toronto, Toronto, ON, Canada
ES31A-07
Influence of Surficial Alluvium on Habitat Utilization by Fish in a Semi-Alluvial Clay-Bed Creek (34450)
Parna ParsapourMoghaddam, University of Ottawa, Ottawa, ON, Canada and Colin D Rennie, University of Ottawa, Department of Civil Engineering, Ottawa, ON, Canada
ES31A-08
A Noval Wave Estimator Based On The Central-upwind Scheme For Simulating Rapid Bed Erosion under Shallow Water Flows (34237)
Xin Liu, PhD candidate, Department of Civil Engineering, Ottawa, ON, Canada, Julio Ángel Infante Sedano, Assistant Professor, Department of Civil Engineering, Ottawa, ON, Canada and Abdolmajid Mohammadian, University of Ottawa, Department of Civil Engineering, Ottawa, ON, Canada
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