Soil properties and computed tomography scans (CT-scans) of two thermo-erosion gullies and the adjacent tundra polygons on Bylot Island, Nunavut, Canada
Abstract
This dataset presents data on soil properties (volumetric ice content, organic matter content, grain size) that come from two thermo-erosion gullies that were studied in the Sirmilik National Park on Bylot Island, NU, Canada. The first gully, TEG1, formed in 1999 and is still active today (2024). Nine boreholes were drilled at TEG1 in June 2013 in three subsites at the following locations: one borehole on an undisturbed polygon in the periphery of the gully, one borehole on a drained polygon near the edge of the gully, and one borehole in the slope of the gully. The second gully, TEG2, is a gully that has been stabilized for at least 66 years. Eight boreholes were drilled at TEG2 in July 2016 at the following locations: two boreholes on undisturbed polygons in the periphery of the gully, two boreholes on drained polygons near the edge of the gully, three boreholes in the slope of the gully and one borehole at the bottom of the gully channel. All cores were scanned by tomodensitometry (CT scan) at the Centre Eau Terre Environnement of the Institut National de la Recherche Scientifique (INRS-ETE), from top to bottom, providing transverse and longitudinal slices images that create a three-dimensional image stack after compilation.
Data citation
Fortier, D., Gagnon, S., Veillette, A., Godin, E. 2024. Soil properties and computed tomography scans (CT-scans) of two thermo-erosion gullies and the adjacent tundra polygons on Bylot Island, Nunavut, Canada, v. 1.0. Nordicana D135, doi: 10.5885/45900CE-763A49F2D1F2442A.
Location map
Key references
-
Gagnon, S., D. Fortier, E. Godin, and A. Veillette. “The Cryostratigraphy of Thermo-Erosion Gullies in the Canadian High Arctic Demonstrates the Resilience of Permafrost.” EGUsphere 2024 (March 14, 2024): 1–31.
DOI: doi.org/10.5194/egusphere-2024-208
Acknowledgements
We thank Karine Rioux and Stéphanie Coulombe for their help during fieldwork. We also thank the Centre for Northern Studies for providing access and logistical support to its research station. We are also grateful to the Natural Sciences and Engineering Research Council of Canada, Parks Canada, Fonds de recherche du Québec - Nature et technologie, Northern Scientific Training Program and the Polar Continental Shelf Program (PCSP).
Version history
-
Version 1.0 (2013–2016)Updated July 25, 2024
You can request an older version by contacting nordicana@cen.ulaval.ca
Measurement sites
| Site | Latitude | Longitude | Altitude (m) | |
|---|---|---|---|---|
| TEG1_1_Undisturbed | 73.1562282 | -79.9472864 | 20 | More info |
| TEG1_1_Drained | 73.1560039 | -79.9455065 | 20 | More info |
| TEG1_1_Slope | 73.1560936 | -79.9455011 | 20 | More info |
| TEG1_2_Undisturbed | 73.1569564 | -79.9476752 | 20 | More info |
| TEG1_2_Drained | 73.1569523 | -79.9468714 | 20 | More info |
| TEG1_2_Slope | 73.1569877 | -79.9467765 | 20 | More info |
| TEG1_3_Undisturbed | 73.1587426 | -79.9533813 | 20 | More info |
| TEG1_3_Drained | 73.1585349 | -79.9539675 | 20 | More info |
| TEG1_3_Slope | 73.1584679 | -79.9540164 | 20 | More info |
| TEG2_1_Undisturbed | 73.1713862 | -79.9053876 | 20 | More info |
| TEG2_2_Undisturbed | 73.1718545 | -79.900335 | 20 | More info |
| TEG2_1_Drained | 73.1717017 | -79.9040339 | 20 | More info |
| TEG2_2_Drained | 73.1717014 | -79.9030327 | 20 | More info |
| TEG2_1_Slope | 73.1717014 | -79.9030327 | 20 | More info |
| TEG2_2_Slope | 73.1717555 | -79.9032023 | 20 | More info |
| TEG2_3_Slope | 73.1720326 | -79.9047089 | 20 | More info |
| TEG2_1_Bottom_Gully_Channel | 73.1717017 | -79.9040339 | 20 | More info |
Supplementary material
Download
Data available for download are in ZIP format. Please properly cite the data when using it.
Fortier_et_al._TEG Get file
Sites
Data
Volumetric ice content
06/2013 – 07/2016
Organic matter content
06/2013 – 07/2016
Gravel content
06/2013 – 07/2016
Sand content
06/2013 – 07/2016
Silt content
06/2013 – 07/2016
Clay content
06/2013 – 07/2016
Mean grain size
06/2013 – 07/2016
Grain sorting
06/2013 – 07/2016
Grain size skewness
06/2013 – 07/2016
Grain size Kurtosis
06/2013 – 07/2016