Abstract
Ground-based electromagnetic induction (EM) measurements of land-fast sea ice and sub-ice platelet layer (SIPL) thickness distributions were carried out in McMurdo Sound, Antarctica in late spring (November 1-19) of 2018. Repeated west to east EM transects were carried out across McMurdo Sound along latitude 77.767°S. The EM data was acquired using a frequency-domain Geonics Ltd EM31-MK2 instrument mounted on a sledge and towed by skidoo. The thicknesses of consolidated ice (sea ice plus the snow layer) and the sub-ice platelet layer were simultaneously retrieved from the EM31 measured response using forward modelling and inversion methods of Irvin (2018). Variability in EM thicknesses detected significant growth of sub-ice platelet layer over the 18-day survey period (Brett et al., 2024).
Datasets listed in this bundled publication:
1) Brett, GM; Leonard, GH; Rack, W et al. (2024): Late spring 2018 land-fast sea ice and sub-ice platelet layer thicknesses from electromagnetic induction soundings along transect West-East-EM-Transect_20181101 in McMurdo Sound, Antarctica. https://doi.org/10.1594/PANGAEA.968702
2) Brett, GM; Leonard, GH; Rack, W et al. (2024): Late spring 2018 land-fast sea ice and sub-ice platelet layer thicknesses from electromagnetic induction soundings along transect West-East-EM-Transect_20181106 in McMurdo Sound, Antarctica. https://doi.org/10.1594/PANGAEA.968703
3) Brett, GM; Leonard, GH; Rack, W et al. (2024): Late spring 2018 land-fast sea ice and sub-ice platelet layer thicknesses from electromagnetic induction soundings along transect West-East-EM-Transect_20181107 in McMurdo Sound, Antarctica. https://doi.org/10.1594/PANGAEA.968705
4) Brett, GM; Leonard, GH; Rack, W et al. (2024): Late spring 2018 land-fast sea ice and sub-ice platelet layer thicknesses from electromagnetic induction soundings along transect West-East-EM-Transect_20181109 in McMurdo Sound, Antarctica. https://doi.org/10.1594/PANGAEA.968704
5) Brett, GM; Leonard, GH; Rack, W et al. (2024): Late spring 2018 land-fast sea ice and sub-ice platelet layer thicknesses from electromagnetic induction soundings along transect West-East-EM-Transect_20181113 in McMurdo Sound, Antarctica. https://doi.org/10.1594/PANGAEA.968707
6) Brett, GM; Leonard, GH; Rack, W et al. (2024): Late spring 2018 land-fast sea ice and sub-ice platelet layer thicknesses from electromagnetic induction soundings along transect West-East-EM-Transect_20181119 in McMurdo Sound, Antarctica. https://doi.org/10.1594/PANGAEA.968706