Ground-penetrating radar (GPR) survey data for a thermokarst lake, Bylot Island, Nunavut, Canada.
Abstract
Ground-penetrating radar (GPR) lines were collected (May 2015) at Gull Lake (Bylot Island, Nunavut, Canada) using sleigh-dragged Sensors and Software PulseEkko GPR and 50 MHz antennas. GPR line processing was performed using Ekko project software and included Dewow, Lowpass temporal filter to diminish background noise and a background average subtraction to remove the overwhelming ice/water boundary signal. The base of the ice cover and lake bottom depth were manually identified and corresponded well to the dielectric properties of ice and water. Signal travel velocities of 0.06 m ns-1 and 0.13 m ns-1 were used respectively for unfrozen and frozen ground. Interpretations were made every 2 m along GPR lines.
Data citation
Fortier, D., Paquette, M., Bouchard, F. 2020. Ground-penetrating radar (GPR) survey data for a thermokarst lake, Bylot Island, Nunavut, Canada., v. 1.0. Nordicana D53, doi: 10.5885/45609CE-E3573955017A4904.
Location map
Key references
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Paquette, M., D. Fortier, D. R. Mueller, D. Sarrazin & W. F. Vincent, 2015. Rapid disappearance of perennial ice on Canada's most northern lake. Geophysical Research Letters, 42: 1433-1440.
DOI: 10.1002/2014GL062960 -
Fortier, D. & M. Allard, 2004. Late Holocene syngenetic ice-wedge polygons development, Bylot Island, Canadian Arctic Archipelago. Canadian Journal of Earth Sciences, 41: 997-1012.
DOI: 10.1139/e04-031 -
Bouchard, F., Fortier, D., Paquette, M., Boucher, V., Pienitz, R., Laurion, I. Thermokarst lake development in syngenetic ice-wedge polygon terrain in the Eastern Canadian Arctic (Bylot Island, Nunavut). The Cryosphere Discussions.
DOI: 10.5194/tc-2019-248
Contributors
Pienitz, Reinhard
Département de géographie, Université Laval & Centre d'études nordiques (CEN)
Laurion, Isabelle
Centre Eau Terre Environnement, Institut national de la recherche scientifique (INRS-ETE) & Centre d'études nordiques (CEN)
Acknowledgements
Audrey Veillette (U. Montréal) and Vilmantas Preskienis (INRS-ETE) conducted GPR surveys in the field in 2015.
Version history
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Version 1.0 (2015–2015)Updated March 4, 2020
You can request an older version by contacting nordicana@cen.ulaval.ca
Measurement sites
| Site | Latitude | Longitude | Altitude (m) | |
|---|---|---|---|---|
| Site BYL-66 (Gull Lake) | 73.154773 | -79.968448 | More info |
Supplementary material
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