Temperature Changes in the Wairakei Geothermal System as Determined by Silica Geothermometry

Abstract

During the last two-decades the temperatures of the waters supplying the wells at Wairakei have monitored continuously by silica is ideal since the operation of the wells is not influenced during sample collection and the assessed temperatures are correct to The Since 1958, the temperatures of the supply waters different wells and to different parts of the Wairakei system have decreased. much as although most have fallen by amounts. This paper provides an of changes in the Wairakei well water temperatures have fallen as borefield as seen from the perspective of silica temperatures and chloride values in the deep, hot water. Results are interpreted and discussed in to the physically measured temperatures, the discharge enthalpies of the wells, the measured aquifer pressure and the local hydrology.