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Nedashkovsky, A P; Khvedynich, S V; Petrovsky, T V (2009): (Table 1) Snow and ice thickness and layering at observation points of the North Pole 34 drifting station. PANGAEA, https://doi.org/10.1594/PANGAEA.726428, Supplement to: Nedashkovsky, AP et al. (2009): Alkalinity of sea ice in the high-latitudinal Arctic according to the surveys performed at North Pole Drifting Station 34 and characterization of the role of the Arctic ice in the CO2 exchange. Oceanology, 49(1), 55-63, https://doi.org/10.1134/S000143700901007X

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Abstract:
Variability of total alkalinity in sea ice of the high-latitudinal Arctic from November 2005 to May 2006 is considered. For the bulk of one- and two-year sea ice, alkalinity dependence on salinity is described as TA = k x Sal, where k is salinity/alkalinity ratio in under-ice water. The given relationship is valid within a wide range of salinity from 0.1 psu in desalinated fraction of two-year ice to 36 psu in snow on the young ice surface. Geochemically significant deviations from the relationship noted were observed exclusively in snow and the upper layer of one-year ice. In the upper layer of one-year ice, deficiency of alkalinity is observed ( delta TA ~= -0.07 mEq/kg, or -15%). In snow on the surface of the one-year ice, alkalinity excess is formed under desalination ( delta TA is as high as 1.3 mEq/kg, or 380%). Deviations registered are caused by possibility of carbonate precipitation in form of CaCO3 x 6H2O under seawater freezing. It is shown that ice formation and the following melting might cause losses of atmospheric CO2 of up to 3 x 10**12 gC/year.
Project(s):
Coverage:
Median Latitude: 87.927251 * Median Longitude: 38.173465 * South-bound Latitude: 87.354722 * West-bound Longitude: 10.425000 * North-bound Latitude: 88.892222 * East-bound Longitude: 101.086667
Date/Time Start: 2006-02-05T00:00:00 * Date/Time End: 2006-12-05T00:00:00
Event(s):
SP-34-10 * Latitude: 87.378888 * Longitude: 33.832500 * Location: Arctic Ocean * Campaign: SP-34 * Basis: Ice drift station * Device: Sea ice corer (SEAICEC)
SP-34-11 * Latitude: 87.354722 * Longitude: 34.480000 * Location: Arctic Ocean * Campaign: SP-34 * Basis: Ice drift station * Device: Sea ice corer (SEAICEC)
SP-34-12 * Latitude: 87.531945 * Longitude: 33.439167 * Date/Time: 2006-04-04T00:00:00 * Location: Arctic Ocean * Campaign: SP-34 * Basis: Ice drift station * Device: Sea ice corer (SEAICEC)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4Sea ice thicknessEsEsmNedashkovsky, A PSea ice observation
5Snow thicknessSnow thickmNedashkovsky, A P
6ThicknessThickmmNedashkovsky, A Player of meltwater from snow
7NumberNoNedashkovsky, A Pof layers in ice including snow
Size:
76 data points

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