I carried out isotope analyses (O18 and Deuterium ) using instrument “ Piccaro”, now I have d(18_16)Mean and d(D_H)Mean for all groundwater samples and also for 2 samples from rainfall and sea, I also have 3 values for the standard solution, please note, that I have no previous experience with interpretation of Isotope analyses.
How I can identify if the aquifer was subjected to recharge or sea water intrusion or not?