Ice-wedge transect thaw depths during 2017 and 2018 thaw seasons, Fosheim Peninsula, Ellesmere Island, Nunavut, Canada ...

• Main Authors: Ward Jones, Melissa, Amyot, Frances, Pollard, Wayne
• Format: Dataset
• Language: unknown
• Published: Canadian Cryospheric Information Network 2020
• Subjects: Ellesmere Island; Eureka; Fosheim Peninsula; Ice; Nunavut; permafrost; wedge*
• Online Access: https://dx.doi.org/10.21963/13134; https://www.polardata.ca/pdcsearch?doi_id=13134

Thaw depths (cm) were collected using a 1 m permafrost probe weekly to biweekly for transects of 7 ice-wedge troughs (IW1 - IW7) and 2 polygon centres (P1 and P2) between 3 July, 2017 and 16 August, 2017 and 6 July, 2018 to 21 July, 2018 in a high-centred polygon system. Probing followed the same survey markers, spaced 1 m apart each time data was collected. Ice-wedge troughs represented varying morphologies and dimensions are as followed: IW1 was 2.00 m wide and 0.25 m deep, IW2 was 6.00 m wide and 0.82 m deep, IW3 was 11.00 m wide and 1.00 m deep, IW4 was 9.00 m wide and 0.85 m deep, IW5 9.00 m and 0.57 m deep, IW6 was 6.00 m wide and 0.42 m deep and finally, IW7 was 6.00 m wide and 0.37 m deep. P1 was the centre of a polygon with an area of 270 m^2, P2 was 266 m^2. Note that P1, P2, IW1, IW2, IW3 was set up initially on 3 July, 2017 and was collected as a single continuous transect (included in the same table). IW4, IW5, IW6 and IW7 were added the following week on 13 July, 2017. Please refer to Ward ... : Thaw depths were collected as part of a study assessing the impacts on ice-wedge trough morphology on surficial conditions and near ground surface temperatures in a high-centred polygon system. This study was done as part of M. Ward Jones's Ph.D. dissertation research at McGill University looking at the interactions between ice-rich permafrost, the active layer and climate to generate landscape change resulting from ground ice melt. This research was conducted in the vicinity of the Eureka Weather Station on Ellesmere Island, Nunavut and was possible thanks to the Research Support Opportunity in Arctic Environmental Studies provided by Association of Canadian Universities for Northern Studies (ACUNS). Other support for this research was provided by Natural Sciences and Engineering Research Council (NSERC) and the Polar Continental Shelf Program (PCSP) awarded to W. Pollard. Additional student support to M. Ward Jones was provided by the Fonds de Recherche du Quebec – Nature et Technologies (FRQNT) doctoral ...