| Title | Thermal Waters from South Bulgaria: A Multivariate Approach for Evaluation and Interpretation of Analytical Data |
|---|---|
| Authors | Veldeman, E.; Van't dack, L.; Gijbels, R.; Pentcheva, E. N. |
| Year | 1990 |
| Conference | Geothermal Resources Council Transactions |
| Keywords | Exploration; Bulgaria; Cold Springs; Thermal Springs; Geochemistry; Granite; Sulfate; Geothermometry; Multivariate Analysis; Bicarbonate |
| Abstract | 25 thermal and 6 cold waters from a granitic region of south Bulgaria were sampled and analyzed for a wide range of major and trace components. This generates a large data set, which was more accessible to interpretation by application of multivariate techniques. Cluster analysis and correspondence factor analysis (CFA) yielded a similar grouping of water samples, which was also confirmed by other interpretation strategies. From CFA it was also possible to distinguish between two main groups of variables, which can be related to reservoir and surface conditions, respectively. Finally, an attempt was made to deduce information on reservoir temperatures from the calibration of the factor, which was, according to CFA, related to reservoir conditions. |