Spring 2018 time-series measurement of land-fast sea ice and sub-ice platelet layer thicknesses from electromagnetic induction soundings in McMurdo Sound, Antarctica

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Description:
Ground-based electromagnetic induction (EM) time-series measurements of land-fast sea ice and sub-ice platelet layer thicknesses were carried out on land-fast sea ice in McMurdo Sound, Antarctica in winter (August 8 to 26 October) and late spring (November 4-18) of 2018. The EM data were acquired using a frequency-domain Geonics Ltd EM31-MK2 instrument mounted on the sea ice surface in winter and a sledge in late spring. 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 (i.e., Apparent Conductivity (AppCond) and Inphase (Inph)) using the forward modelling and inversion methods of Irvin (2018). Temporal variability in EM measured thicknesses detected the seasonal growth of land-fast sea ice and sub-ice platelet layer in winter, and shorter timescale variability related to strong offshore wind events in winter and the tides in late spring (Brett et al., 2024).
Auteur(s) :
Brett, Gemma Marie

Brett, Gemma Marie

University of Canterbury
0000-0001-8249-2675
, Leonard, Gregory H

Leonard, Gregory H

University of Otago
0000-0001-7679-9486
, Rack, Wolfgang

Rack, Wolfgang

University of Canterbury
0000-0003-2447-377X
, Irvin, Anne

Irvin, Anne

Memorial University of Newfoundland York University, Toronto, Canada
0000-0001-6351-0217
, Haas, Christian

Haas, Christian

Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
0000-0002-7674-3500
, Langhorne, Patricia J

Langhorne, Patricia J

University of Otago
0000-0003-0239-7657
 et Smith, Inga J

Smith, Inga J

University of Otago
Dépôt source:
PANGAEA
Éditeur(s):
PANGAEA
License:
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode
URL:
https://doi.pangaea.de/10.1594/PANGAEA.968699
Date de publication:
2024
Sujets (en):
DATE/TIME, Temperature, air, Antarctic sea ice, electromagnetic induction, ice-ocean interaction, Ice thickness, Sub-ice platelet layer, Sea ice thickness, Sub-ice platelet-layer thickness, Ground-based electromagnetic induction, DEEP SOUTH NATIONAL SCIENCE CHALLENGE: Targeted observation and process-informed modelling of Antarctic sea ice (TOPIMASI), Conductivity, apparent, In-phase component, et Temperature sensor, Campbell Scientific
Identificateur:
https://doi.org/10.1594/pangaea.968699

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Citation selon les normes APA:
Spring 2018 time-series measurement of land-fast sea ice and sub-ice platelet layer thicknesses from electromagnetic induction soundings in McMurdo Sound, Antarctica. (2024). [Data set]. PANGAEA. https://doi.pangaea.de/10.1594/PANGAEA.968699
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