Measure of the chloride content, by mass, of sea water. It is defined as the amount of chlorine, in grams, in 1 kg of sea water (bromine and iodine are assumed to have been replaced by chlorine). Chlorinity and salinity are both measures of the saltiness of sea water. The relationship can be expressed mathematically, as salinity is equivalent to 1.80655 times the chlorinity. There is a constant ratio of dissolved chloride to total dissolved salts in all sea water.
Subjects: Biological Sciences — Earth Sciences and Geography.