Thaw front depth at the bottom, on the slopes and on the adjacent tundra polygons of two thermo-erosion gullies on Bylot Island, Nunavut, Canada
Abstract
This dataset presents thaw front depths (TFD) measurements made in two thermo-erosional gullies on Bylot Island, Nunavut, Canada, from probing to refusal with a graduated steel rod. The first gully, TEG1, formed in 1999 and is still active today (2024). The second gully, TEG2, is a gully that has been stabilized for at least 66 years. TFD was measured in 2017 from 13 June to 29 July, and in 2018 from 12 June to 16 August. Measurements were made every 2-3 days along transects of ~30 points (10 to 30 m in length) perpendicular to the TEG and averaged into three positions: 1) shoulder of the gully (the polygon directly adjacent to the gully), 2) gully slope, 3) gully stream.
Data citation
Fortier, D., Gagnon, S., Rioux, K., Veillette, A., Godin, E. 2024. Thaw front depth at the bottom, on the slopes and on the adjacent tundra polygons of two thermo-erosion gullies on Bylot Island, Nunavut, Canada, v. 1.0. Nordicana D134, doi: 10.5885/45903CE-33A7E0A483AD4C3D.
Location map
Key references
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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
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Version 1.0 (2017–2018)Updated July 25, 2024
You can request an older version by contacting nordicana@cen.ulaval.ca
Measurement sites
| Site | Latitude | Longitude | Altitude (m) | |
|---|---|---|---|---|
| TEG1_TFD1 | 73.1584396 | -79.9520248 | More info | |
| TEG1_TFD2 | 73.1570658 | -79.9461271 | More info | |
| TEG1_TFD3 | 73.1570658 | -79.9461271 | More info | |
| TEG1_TFD4 | 73.156463 | -79.9441256 | More info | |
| TEG2_TFD1 | 73.171781 | -79.9034963 | More info | |
| TEG2_TFD2 | 73.1684468 | -79.8994139 | More info | |
| TEG2_TFD3 | 73.1665271 | -79.8957613 | More info |
Download
Data available for download are in ZIP format. Please properly cite the data when using it.