(Table 1) Sea ice and snow characteristics and heat fluxes observed during R/V Aurora Australis cruise to East Antarctica in September/October 2007 ...

• Main Authors: Toyota, Takenobu, Massom, Robert A, Tateyama, Kazu, Tamura, T, Fraser, Alexander
• Format: Dataset
• Language: English
• Published: PANGAEA 2011
• Subjects: Event label; Latitude of event; Longitude of event; DATE/TIME; Date/time end; Length of transect; Ice thickness; Freeboard; Snow thickness; Temperature, ice/snow; Number; Density, snow; Conductivity, thermal; Temperature gradient; Heat flow; Ice station; SIPEX; Aurora Australis; International Polar Year 2007-2008 IPY; Antarc*; Antarctic; Antarctica; aurora australis; East Antarctica; ice core; International Polar Year; IPY; Sea ice; Wilkes Land
• Online Access: https://dx.doi.org/10.1594/pangaea.839311; https://doi.pangaea.de/10.1594/PANGAEA.839311

The properties of snow on East Antarctic sea ice off Wilkes Land were examined during the Sea Ice Physics and Ecosystem Experiment (SIPEX) in late winter of 2007, focusing on the interaction with sea ice. This observation includes 11 transect lines for the measurement of ice thickness, freeboard, and snow depth, 50 snow pits on 13 ice floes, and diurnal variation of surface heat flux on three ice floes. The detailed profiling of topography along the transects and the d18O, salinity, and density datasets of snow made it possible to examine the snow-sea-ice interaction quantitatively for the first time in this area. In general, the snow displayed significant heterogeneity in types, thickness (mean: 0.14 +- 0.13 m), and density (325 +- 38 kg/m**3), as reported in other East Antarctic regions. High salinity was confined to the lowest 0.1 m. Salinity and d18O data within this layer revealed that saline water originated from the surface brine of sea ice in 20% of the total sites and from seawater in 80%. From the ... : At stations 12 and 15 only ice core sampling was done. At station IO-9 heat fow of ice is blank because a snow pit was set 10 m away from the transect. At station IO-6 snow density is blank because snow cover was too thin for the measurement of density. Ther bulk density of snow was obtained from snow type, according to Sturm et al. (1997). Heat flow and temperature gradient were originally given in W/m**2 and K/m respectively and were recalculated to mW/m**2 and mK/m by multiplying by 1000. Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...