What Are Isotopes and What Can Be Learned From Them?

Fig. 7: Isotope and chemical methods complement each other in studying the Palinpinon geothermal field in the Philippines. Tritium and ¹⁸O identify the incursion of cooler "meteoric" water during exploitation.

Fig. 8: IAEA technical assistance on isotope hydrology produced a hydrological model of the Palinpinon field during exploitation. The components of geothermal fluids and the processes affecting them were determined using isotope and chemical techniques.