Figure six Noticeable CFC cost dates created if the: (a) young water for the balance with 1993 heavens combines having liquid recharged within the 1940; and you may (b) more youthful h2o from inside the equilibrium which have 1993 sky brings together with water recharged during the 1975. Calculations on ten°C and step one atm. total stress.
Because of the effortless and usually broadening character of atmospheric combo rates, hydrodynamic dispersion is not likely to have a significant affect CFC density or visible CFC decades from inside the groundwater. Playing with a one-dimensional analytical option to the brand new advection-dispersion www.datingmentor.org/affair-dating/ equation within the steady-state move profession (van Genuchten and you will Alves, 1982), Plummer mais aussi al. (1993) artificial new transport and ensuing years concerns to possess CFC-eleven and you may CFC-several for liquid charged off 1940 by way of 1991 (Figure eight).
Profile seven Mistakes into the CFC-11 and CFC-a dozen visible decades computed for example-dimensional flow, which have dispersivities of 0 to dos m (off Plummer ainsi que al., 1993).
on the 1975 will be arrive a little older than the fresh new advective ages. Drinking water charged just before on the 1970 seems as a little more youthful versus advective years.