<  Back to the Polytechnique Montréal portal

Effects of projected climate on the hydrodynamic and sediment transport regime of the lower Athabasca River in Alberta, Canada

Y. Dibike, Ahmad Shakibaeinia, H.-Il Eum, T. Prowse and I. Droppo

Article (2018)

[img]
Preview
Published Version
Terms of Use: Creative Commons Attribution.
Download (2MB)
Cite this document: Dibike, Y., Shakibaeinia, A., Eum, H.-I., Prowse, T. & Droppo, I. (2018). Effects of projected climate on the hydrodynamic and sediment transport regime of the lower Athabasca River in Alberta, Canada. River Research and Applications, 34(5), p. 417-429. doi:10.1002/rra.3273
Show abstract Hide abstract

Abstract

The potential effects of climate change on the hydrodynamic and sediment transport regime of the lower Athabasca River (LAR) in Alberta, Canada, is investigated. Future climate projections for the region suggest a potential increase in mean air temperature and precipitation by about 2.8–7.1 °C and 8–25%, respectively, by the end of this century. Implications of these climatic changes on the hydrologic regime of the LAR are found to be significant with spring flows expected to increase by about 11–62% and 26–71% by the end of the century for a moderate and high emissions scenarios respectively with corresponding decreases in summer flows. The effects of such changes are examined using the MIKE‐11 hydrodynamic and sediment transport modelling system with inflow boundary conditions corresponding to the changing hydro‐climatic regime. The results suggest that there will be an overall increase in flow velocity, water level, and suspended sediment concentration and transport for most seasons except in the summer months when there may be some decreases. The projected changes in suspended sediment concentration will result in an overall increase in mean annual sediment load in the LAR and to the Peace Athabasca Delta by over 50% towards the latter part of this century (2080s) compared with the 1980s base‐line period. Implications of such potential changes in the transport characteristics of the river system to the mobilization and transport of various chemical constituents and their effects on the region's aquatic ecosystems are subjects of other ongoing investigations.

Uncontrolled Keywords

climate change; hydrodynamic modelling; lower Athabasca River; sediment transport

Open Access document in PolyPublie
Subjects: 1000 Génie civil > 1006 Génie hydrologique
1400 Génie minier et minéral > 1400 Génie minier et minéral
Department: Département des génies civil, géologique et des mines
Research Center: Non applicable
Funders: Joint Canada‐ Alberta Oil‐Sands Monitoring Program (JOSMP), Environment and Climate Change Canada's Climate Change Adaptation Program (CCAP)
Date Deposited: 05 Sep 2018 17:02
Last Modified: 24 Oct 2018 16:13
PolyPublie URL: https://publications.polymtl.ca/3252/
Document issued by the official publisher
Journal Title: River Research and Applications (vol. 34, no. 5)
Publisher: Wiley
Official URL: https://doi.org/10.1002/rra.3273

Statistics

Total downloads

Downloads per month in the last year

Origin of downloads

Dimensions

Repository Staff Only