The radioactivity of spas on the Greek island Ikaria and influencing factors.

The aim of this research is the qualitative and quantitative determination by gamma-spectroscopy analysis of all the natural radioisotopes which exist in the waters of the municipal thermometallic radioactive springs (spas) of the Greek island Ikaria. An explanation is suggested for the different concentrations of natural radioisotopes in these spa waters in connection with physical factors (geological composition, temperature of the spas, etc.). In addition to the aforementioned, we also seek to compare radioactivity values of different spas during the same season as well as of an individual spa at different seasons of the year.