The relations between chlorinity, conductivity ratio and salinity in the water of Lake Qarun, Egypt [gravimetric salinities]
1980
Meshal, A.H. (Institute of Oceanography and Fisheries, Suez (Egypt). Red Sea Branch) | Morcos, S.A.
For practical resaons, investigators of the water in Lake Qarun tended to estimate its salinity by the conventional oceanographic formulae which should be restricted to sea water. The application of these formulae on the lake water would lead to erroneous results in salinity owing to the differences in the ionic composition between lake and sea waters. The present work provides the bases for accurate estimation of salinity in Lake Qarun by applying the standard oceanographic methods. Water samples from the lake were examined for chlorinity, conductivity ratio and gravimetric salinity. New empirical relationships between these three variables were established. It was found that salinity values estimated from the new equations were very close to those determined gravimetrically. On the other hand salinities estimated either from chlorinity using the Knudsen Tables or from the conductivity ratio using the International Oceanographic Tables were only 73% and 88% of the gravimetric salinity respectively.
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