Title: Permafrost Monitoring at Scotty Creek Research Station, 2011-2017 [Northwest Territories, Canada]
Citation: Quinton, William L.; Connon, Ryan F.; Devoie, Élise G., 2019, "Permafrost Monitoring at Scotty Creek Research Station, 2011-2017 [Northwest Territories, Canada]", https://doi.org/10.5683/SP2/BTRLHO, Borealis
Study Site: Scotty Creek, Northwest Territories
Purpose: A physically-based one-dimensional sharp-interface model of active layer evolution and permafrost thaw is presented. This computationally efficient, semi-analytical, non-equilibrium solution to soil freeze-thaw problems in partially saturated media is proposed as a component of hydrological models to describe seasonal ground ice, active layer evolution and changes in permafrost temperature and extent. The model is developed and validated against the analytical Stefan solution and a finite volume coupled heat and mass transfer model of freeze-thaw in unsaturated porous media. Unlike analytic models, the interface model provides a non-equilibrium solution to the heat equation while permitting a wide range of temporally variable boundary conditions and supporting the simulation of multiple interfaces between frozen and unfrozen soils. The model is implemented for use in discontinuous permafrost peatlands where soil properties are highly dependent on soil ice content and infiltration capacity is high. It is demonstrated that the model is suitable for the representation of variably saturated active layer and permafrost evolution in cases both with and without a talik.
Abstract: Datafiles with the appendix _logged refer to data collected half-hourly with thermistors. Refreeze and active layer data are field observations made using a frost probe or soil auger. Snow data was collected using typical snow survey techniques including depth and density measurements. The appendix _ag refers to files aggregating half-hourly data for multiple years into one representative year of daily data. The matlab file contains a program to predict permafrost degradation.
Supplemental Information Summary: Authorship on this dataset's code (i.e., MATLAB files) differs from dataset authorship. Code authorship and attribution belongs solely to Devoie, Élise G.
Research:
Further Info: Devoie, E.G., Craig, J.R., Connon, R.F., & Quinton, W.L. (2019). Taliks: A Tipping Point in Discontinuous Permafrost Degradation in Peatlands. Water Resources Research; 55(11): https://doi.org/10.1029/2018WR024488
Status: Complete
Keywords:
meteorology,
modeling,
permafrost,
Geographical coordinates: North: 61.30, South: 61.30 East: -121.30 West: -121.30
Bounding Temporal Extent: Start Date: , End
Date:
