Cambridge University Press, Annals of Glaciology, (20), p. 440-447, 1994
DOI: 10.3189/1994aog20-1-440-447
Cambridge University Press, Annals of Glaciology, (20), p. 440-447
DOI: 10.1017/s0260305500016827
Cambridge University Press, Annals of Glaciology, 1(20), p. 440-447
DOI: 10.3189/172756494794587159
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A compilation of reliable data for sodium, nitrate, chloride and sulphate has been made. NO3 concentrations arc remarkably consistent across Antarctica, though there appears to be some correlation with altitude and accumulation rate. Post-depositional loss of NO3- is important at low-accumulation sites. Cl concentration (either measured directly or calculated from Na+ via the sea salt ratio) decreases with distance from the coast, though the decline is less rapid if the coastal topography is not steep or mountainous. Excess sulphate (xsSO42) concentration (here calculated from normal sea-salt ratios with Na+ or Cl) also declines with distance from the coast, though less quickly than Cl-. Fractionation of sea-salt ions makes the calculation of SO42- uncertain.