Thermo-hydrologic processes governing supra-permafrost talik dynamics in discontinuous permafrost near Umiujaq (Québec, Canada)

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Abstract

Widespread supra-permafrost talik formation is currently recognized as a critical mechanism that could accelerate permafrost thaw in the Arctic (e.g., Connon et al. 2018; Farquharson et al. 2022). However, the trajectory of permafrost dynamics following talik formation may prove difficult to predict. Physically-based cryohydrogeologic models provide a powerful tool for understanding processes and factors controlling talik dynamics and, ultimately, how permafrost will respond to climate change. Such models are typically used to represent multiple non-linear processes relevant for groundwater systems in cold regions, such as coupled heat and groundwater movement, including freeze-thaw dynamics and the effects on the surface energy balance and the subsurface thermal and hydraulic properties (Lamontagne-Hallé et al. 2020). Though cryohydrogeologic modeling advances have been made in simulating talik dynamics, few applications have been tested against robust long-term hydrometeorological and subsurface observations.
Publication type Conference Paper
Publication Subtype Conference Paper
Title Thermo-hydrologic processes governing supra-permafrost talik dynamics in discontinuous permafrost near Umiujaq (Québec, Canada)
Volume 2
Year Published 2024
Language English
Contributing office(s) WMA - Earth System Processes Division
Description 2 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title Proceedings of the 12th International Conference on Permafrost
First page 374
Last page 375
Conference Title 12th International Conference on Permafrost (ICOP 2024)
Conference Location Whitehorse, Canada
Conference Date June 16-20, 2024
Country Canada
State Quebec
Other Geospatial Umiujaq
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