Mathematics – Logic
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993gecoa..57.2191a&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 57, Issue 10, pp.2191-2196
Mathematics
Logic
1
Scientific paper
The actual density-salinity relation of the post-1983 (supersaturated) Dead Sea brine is not a fixed thermodynamic constant as it would be in undersaturated brines, but rather a combination of two different thermodynamic constants. One of them, NaCl , is the brine's expansion coefficient to sodium chloride and relates to the process of halite precipitation; and the other, , is the brine's expansion coefficient to total salts and relates to the dilution-evaporation process. For every particular period under study, the actual density-salinity relation gb must be evaluated separately. The long-term gb for the years 1983-1990, as estimated from climatological data, is about 3 u kg/g, roughly 3.5 times larger than either or NaCl . A new approach, based on the difference between NaCl and , is applied to the 1983-1990 density record; it reveals that salts precipitate from the Dead Sea brines at a rate of 1.9 × 10 -3 g/cm 3 y, about 77% of which precipitate at the periphery of the lake, mostly at the southern tip, and only the remaining 23% in the interior of the lake.
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