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

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 Jones et al. (in review) for more details on this study.