| Abstract: | The computer program MEQTP, which calculates the composition of a geothermal water and follows the evolution of the composition during temperature and pressure changes, has been applied to some springs from the south of France. This represents a first attempt at taking pressure changes into account in calculating pressure as well as temperature of the deep reservoirs supplying the thermal springs. The calculated temperature corresponds well with the values obtained by means of classical geothermometers and from previous calculations, in which pressure variations are neglected. Calculation of pressure requires a better understanding of the mechanism (read the mineral) controlling the Mg2+ concentration in the geothermal waters. |
