Ice thickness measurements in the Lincoln Sea and adjacent Arctic Ocean ...

• Main Authors: Haas, Christian, Hendricks, Stefan, Doble, M
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2006
• Subjects: Electro-magnetic Bird EM-Bird; GreenICE2004; GreenICE2005; Helicopter; Greenland Arctic Shelf Ice and Climate Experiment GreenICE; Sea Ice Physics @ AWI AWI_SeaIce; Arctic; Arctic Ocean; Doble; Greenland; ice pack; Lincoln Sea; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.738243; https://doi.pangaea.de/10.1594/PANGAEA.738243

Results of helicopter-borne electromagnetic measurements of total (ice plus snow) sea-ice thickness performed in May 2004 and 2005 in the Lincoln Sea and adjacent Arctic Ocean up to 86° N are presented. Thickness distributions south of 84° N are dominated by multi-year ice with modal thicknesses of 3.9 m in 2004 and 4.2 m in 2005 (mean thicknesses 4.67 and 5.18 m, respectively). Modal and mean snow thickness on multi-year ice amounted to 0.18 and 0.30 m in 2004, and 0.28 and 0.35 m in 2005. There are also considerable amounts of 0.9-2.2 m thick first-year ice (modal thickness), mostly representing ice formed in the recurring, refrozen Lincoln Polynya. Results are in good agreement with ground-based electromagnetic thickness measurements and with ice types demarcated in satellite synthetic aperture radar imagery. Four drifting buoys deployed in 2004 between 86° N and 84.5° N show a similar pattern of a mean southward drift of the ice pack of 83 ± 18 km between May 2004 and April 2005, towards the coast of ... : Supplement to: Haas, Christian; Hendricks, Stefan; Doble, M (2006): Comparison of the sea ice thickness distribution in the Lincoln Sea and adjacent Arctic Ocean in 2004 and 2005. Annals of Glaciology, 44(1), 247-252 ...