Sea ice growth rates from tide-driven visible banding

• Main Authors: Turner, Kate K.E., Smith, Inga I.J., Tison, Jean-Louis, Verbeke, Véronique, McGuinness, Mark, Ingham, Malcolm, Vennell, Ross, Trodahl, Joe
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2017
• Subjects: Sciences de l'espace; Phénomènes atmosphériques; Géographie physique; Sciences de la terre et du cosmos; current; growth rates; McMurdo Sound; sea ice; tide; visible banding; ice core; Sea ice
• Online Access: http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/259287

In this paper, periodic tide-current-driven banding in a sea-ice core is demonstrated as a measure of the growth rate of first-year sea ice at congelation-ice depths. The study was performed on a core from the eastern McMurdo Sound, exploiting the well-characterized tidal pattern at the site. It points the way to a technique for determining early-season ice growth rates from late-season cores, in areas where under ice currents are known to be tidally dominated and the ice is landfast, thus providing data for a time of year when thin ice prevents direct thickness (and therefore growth rate) measurements. The measured results were compared to the growth-versus-depth predicted by a thermodynamic model. SCOPUS: ar.j info:eu-repo/semantics/published