Table 3.
Factor loads of hydrochemical data matrix for CO2-rich waters
| PC1 | PC2 | PC3 | |
|---|---|---|---|
| Eigenvalue | 5.08 | 2.41 | 1.60 |
| Variance explained (%) | 42.3 | 20.1 | 13.6 |
| Temperature | 0.734 | − 0.152 | − 0.442 |
| H+ (logarithm)a | − 0.785 | − 0.037 | 0.462 |
| Redox potential | − 0.188 | − 0.347 | 0.805 |
| Si | − 0.114 | 0.844 | 0.090 |
| Ge (logarithm) | 0.519 | 0.709 | − 0.219 |
| Fe (logarithm) | − 0.061 | 0.915 | 0.0001 |
| As (logarithm) | 0.275 | − 0.0003 | − 0.756 |
| Zn (cube root) | 0.248 | 0.145 | 0.488 |
| K (logarithm) | 0.680 | 0.418 | − 0.439 |
| Ca + Mg + HCO3 | 0.580 | 0.589 | − 0.297 |
| SO4 (logarithm) | 0.866 | − 0.283 | 0.168 |
| Na + Cl (logarithm) | 0.865 | 0.308 | 0.170 |
Crucial values (> |0.7|) are in bold
aThe mathematic formula used to normalize statistical distribution