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Autori principali: Brett, Gemma Marie, Leonard, Gregory H, Rack, Wolfgang, Irvin, Anne, Haas, Christian, Langhorne, Patricia J
Natura: Dataset Open Access
Lingua:en
Pubblicazione: PANGAEA 2024
Soggetti:
Antarctic sea ice; DATE/TIME; DEEP SOUTH NATIONAL SCIENCE CHALLENGE: Targeted observation and process-informed modelling of Antarctic sea ice; electromagnetic induction; Electromagnetic sounding (EM), Geonics Ltd EM31-MK2; GEM; Ground-based electromagnetic induction; ice-ocean interaction; Ice thickness; Identification; LATITUDE; LONGITUDE; McMurdo; Sea ice thickness; Sub-ice platelet layer; Sub-ice platelet-layer thickness; TOPIMASI; West-East-EM-Transect_20181101
Accesso online:https://doi.org/10.1594/PANGAEA.968702
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Sommario:
  • 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).

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