Late spring 2018 land-fast sea ice and sub-ice platelet layer thicknesses from electromagnetic induction soundings on transect TNB-2021_North_EM in Gerlache Inlet, Terra Nova Bay, Antarctica

• Main Authors: Brett, Gemma Marie, Gardiner, Natasha Blaize, Hawes, Ian, Kim, Sanghee, Rack, Wolfgang, Irvin, Anne, Langhorne, Patricia J, Haas, Christian
• Format: Dataset
• Language: English
• Published: PANGAEA
• Subjects: Antarctic sea ice; DATE/TIME; electromagnetic induction; Electromagnetic sounding (EM); Geonics Ltd EM31-MK2; GEM; Ground-based electromagnetic induction; ice-ocean interaction; ice thickness; Identification; LATITUDE; LONGITUDE; Sea ice thickness; Sub-ice platelet layer; Sub-ice platelet-layer thickness; Terra Nova Bay; TNB-2021_North_EM-Transect; Antarctic; Gerlache; Gerlache Inlet; Antarc*; Antarctica; Antarctica Journal; Sea ice
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.968717

Ground-based electromagnetic induction (EM) measurements of land-fast sea ice and sub-ice platelet layer thickness distributions were carried out on land-fast sea ice in Gerlache Inlet, Terra Nova Bay, Antarctica in late spring (November 3-7) of 2021. EM transects were carried out across Gerlache Inlet in north to south and east to west directions. The EM data were 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 SPL were simultaneously retrieved from the EM31 measured response using the forward modelling and inversion methods of Irvin (2018).