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Nordicana D53 / DOI : 10.5885/45609CE-E3573955017A4904

Ground-penetrating radar (GPR) survey data for a thermokarst lake, Bylot Island, Nunavut, Canada.
Daniel Fortier1, 4, Michel Paquette2, Frédéric Bouchard3, 4
1Département de géographie, Université de Montréal
2Department of Geography and Planning, Queen's University
3Géosciences Paris Sud (GEOPS), Université Paris Saclay
4Centre d'études nordiques (CEN)

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 (2015-2015). Nordicana D53, doi: 10.5885/45609CE-E3573955017A4904.

Location map

Key references
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.
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.
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.

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.

Related data
Nordicana D51 - Abondance des diatomées fossiles dans une carotte de sédiments lacustres, Île Bylot, Nunavut, Canada / Fossil diatom abundance in a lake sediment core, Bylot Island, Nunavut, Canada
Nordicana D52 - Contenu en matière organique et granulométrie de carottes de sédiments lacustres, Île Bylot, Nunavut, Canada. / Organic matter content and grain size distribution in lake sediment cores, Bylot Island, Nunavut, Canada.
Nordicana D54 - Données de tomodensitométrie d'une carotte de sédiments lacustres, Île Bylot, Nunavut, Canada. / Computed tomography (CT) scans of a lake sediment core, Bylot Island, Nunavut, Canada.

Status
Published

Version history
You can request for data from previous versions at nordicana@cen.ulaval.ca.


Version 1.0 (2015-2015) - Updated March 4, 2020

Measurement sites

  Site Latitude Longitude Altitude (m)
More info
Site BYL-66 (Gull Lake)
 73.154773 -79.968448

Supplementary material
GPR pulseEKKO (Sensors & Software) - brochure

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