Peter Ashmore

Professor
Peter Ashmore

Contact Information

Office: Room 1405, SSC
Tel: 519 661-2111, 85026
E-mail: pashmore@uwo.ca

Research Areas

Fluvial geomorphology, sediment transport, urban river systems, socio-geomorphology

Research Interests

Recent and current projects include: bed material transport in gravel rivers & passive tracer methods; gravel bedload as morphological dynamics; braided river morpho-dynamics and change; urbanization and rivers in Toronto region; stream power tools for anticipating fluvial change from urban development; semi-alluvial river processes and till-bed channels; socio-geomorphology of rivers; river restoration design.

Teaching

GEO 1300 – Introduction to the Physical Environment

GEO 2330 – Geomorphology & Hydrology

GEO 3334 – Geomorphology of River Channels

 

Supervised Graduate Students and Theses Titles

PhD Students

  • L. Middleton (Current) Braided river dynamics
  • C. Dawson (2022) Evaluating Morphology Changes of Designed Rivers with a Geomorphic Form Variation (GFV) Approach
  • S. Peirce (2017) Morphological Bedload Transport in Gravel - Bed Braided Rivers
  • J.T. Gardner (2009) Morpho-Dynamics and Sedimentology of Confluences
  • R. Egozi (2006) Channel Pattern Variation in Gravel Bed Braided Rivers
  • A. Doeschl (2002) Assessing braided river dynamics with a cellular model
  • R. Pryce (2001) Morphological Control of Bedload Transport
  • D. Boyes (1999) Morphometry and Lake Development on the Mackenzie Delat, NWT

Masters Students

  • V. Barlow (2022) Measuring the Morphologic Response of Braided Rivers to Lateral Constriction
  • M. Sauro (2021) Bed particle dispersion and scour in the San Juan (Pacheedaht) River
  • R. McQueen (2019) Bed particle displacement in a wandering gravel-bed river
  • D. Barr (2017) Wilket Creek: Urbanization, Geomorphology, Policy and Design
  • J. Howett (2017) Meander belt delineation: Developing a predictive model for meander belt width
  • L. Middleton (2017) Geomorphology
  • T. Hrytsak (2012) Alluvial Cover Dynamics in a Semi-alluvial Channel
  • N. Sampson (2011) Geomorphic Natural Channel Design in Southern Ontario
  • J. McDonald (2011) Morphological Response of Highland Creek to Urbanization
  • M. Ferencevic (2008) DEM Mapping of Stream Power for Southern Ontario Streams
  • F. Varkaris (2002) Variability in Bedload Sediment Transport Estimates
  • S. Baxter (2001) Use of Stream Power for Assessment of Stream Channel Stability
  • J.B. Lindsay (2000) Error in measurement of river bed topography and topographic change
  • G.E. Foster (1999) Morphology of 3 Semi-Alluvial Stream Channels in S. Ontario
  • B.D. Kussner (1995) Variation of bedload transport in Sunwapta River, Alberta
  • D. Jackson (1994) The sedimentology of braided gravel-bed rivers
  • L.C. Chew (1994) Channel adjustments in a pro-glacial stream
  • J.J.W. Luce (1994) Confluence zone sedimentation processes
  • J. Goff (1991) Braiding: bed sediment transport and morphological change
  • F.M. Conly (1990) Patterns of bar development and sand-flat initiation in the South Saskatchewan River

Publications

Refereed Journals

K. Ghunowa, B.J. MacVicar & P. Ashmore, (2021). "Stream power index for networks (SPIN) toolbox for decision support in urbanizing watersheds." Environmental Modeling & Software, Volume 144, https://doi.org/10.1016/j.envsoft.2021.105185.

McQueen, R., Ashmore, P., Millard, T. & Goeller, N. (2021). "Bed particle displacements and morphological development in a wandering gravel-bed river." Water Resources Research, 57, e2020WR027850. https://doi.org/10.1029/2020WR027850.

S. Peirce, B.J. MacVicar, E. Papangelakis, L. Vervynck & P. Ashmore. (2021). "Experiments on restoring alluvial cover using gravel augmentation in a variable width channel with irregular meanders." Geomorphology, 379, 107585. https://doi.org/10.1016/j.geomorph.2020.107585.

Papangelakis, E., Welber, M., Ashmore, P. and MacVicar, B. (2021). "Controls of alluvial cover formation, morphology and bedload transport in a sinuous channel with a non-alluvial boundary." Earth Surface Processes Landforms, 46: 399–416. https://doi.org/10.1002/esp.5032.

Papangelakis, E., MacVicar, B. & Ashmore, P. (2019). "Bedload sediment transport regimes of semi-alluvial rivers conditioned by urbanization and stormwater management." Water Resources Research, 55, 10565– 10587. https://doi.org/10.1029/2019WR025126. [2019 Water Resources Research Editors Choice]

Leduc, P., Peirce, S. & Ashmore, P. (2019). "Short Communication: Challenges and applications of structure-from-motion photogrammetry in a physical model of a braided river." Earth Surface Dynamics, 7, 97-106. https://doi.org/10.5194/esurf-7-97-2019.

Middleton, L., Ashmore, P., Leduc, P. & Sjogren, D. (2019). "Rates of planimetric change in a proglacial gravel-bed braided river: field measurement and physical modeling." Earth Surface Processes and Landforms, 44: 752-765.
https://doi.org/10.1002/esp.4528.

Peirce, S., Ashmore, P. & Leduc, P. (2019). "Evolution of grain size distributions and bed mobility during hydrographs in gravel-bed braided rivers." Earth Surface Processes and Landforms, 44: 304–316. 
https://doi.org/10.1002/esp.4511.

Chapters in Books

Ashmore, P. (2022). "Braiding. In: Shroder, J.J.F." (Ed.), Treatise on Geomorphology, vol. 6. Elsevier, Academic Press, 517–543. https://dx.doi.org/10.1016/B978-0-12-409548-9.12086-X.

Ashmore, P. (2018). "Transforming Toronto’s rivers: a socio-geomorphic perspective." in R. Lave,  C. Biermann, S. Lane (Eds). Handbook of Critical Physical Geography (Palgrave, New York) 23: 485-511.