ISOTOPE HYDROLOGY STUDY OF AREAS IN EASTERN MACEDONIA AND THRACE, NORTHERN GREECE

摘要

Depending upon the altitude effect on the isotopic composition of precipitation, isotopes may be used for the identification of waters coming from each of the potential sources of recharge to the groundwater. The so-called precipitation altitude effect, derived by sampling of the precipitation at different elevations, is not always useful without further assumptions. As another approach one may investigate, even if this is more tedious, the effect of the altitude on the isotopic composition of the groundwater directly, by sampling of springs with well defined recharge areas, at different elevations [1-5]. The so-called groundwater isotope effect is undoubtedly more accurate for the determination of the origin of the groundwater, especially in cases of intense evapotranspiration.