Jökull - 01.12.1984, Page 38

Ca (mg/kg) K (mg/kg) S102 (mg/kg)
60.
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Fig. 7. The concentration of silica (Si02), potassium (K), calcium (Ca), sulphate (S04) and chloride
(Cl) in the glacial rivers Skeiðará, Sandgígjukvísl, Skaftá and Djúpá. Also shown is the molar ratio of
Na/K in the water.
7. mynd. Styrkur uppleystra efna í jökulánum Skeidará, Sandgígjukvísl, Súlu, Hverfisfljóti, Skaftá og
Djúpá; kísill, kalíum, kalsíum, súlfat og klóríð. Einnig er sýnt hlutfall NalK.
tion and no precipitation occurred. Hence, the
iron concentration in the jökulhlaup of 1983 must
have differed from that of 1982. Iron in water
from previous jökulhlaups would probably not
have been detected due to different handling and
storage of the samples. However, 9.5 mg/kg of
iron were reported in water from the jökulhlaup
in 1954 (Rist 1955) but the reliability of the
36 JÖKULL 34. ÁR