Analysis of a marine intrusion by parameters derived from salt-water conductivity
1996
Rozycki, A.
For a one year period, conductivity and temperature were measured in extraction wells situated in two coastal aquifers in the South of Spain. Sensors were placed 3 m below water level. Spatial distributions of water conductivity fit well to an exponential function. The cross plots of the exponential function parameters emphasized the cyclical character of the marine intrusion. They also permitted analysis of the salt-water movement during the entry and recession of the marine intrusion. The integration of the condutivity distribution improved the aquifer analysis. In the studied area, the marine intrusion corresponded to a thermal effect. Temporal distributions of the parameter, derivated from the temperature, advanced the development of the salt-water intrusion by two weeks. An effective short-term prediction can be accomplished through analysis of the relationship between the temporal sequence of the conductivity and the parameters obtained from the spatial distributions of conductivity.
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