The influence of correlations in computing crustal strains from trigonometric network results

A variance-covariance analysis is made concerning the crustal strain parameters deduced from triangulation results. The coordinate difference method is treated, the algorithm of the analysis being valid for either free or constrained network adjustments. The importance of the correlations entering into the calculation of the standard deviations of strains is emphasized, showing how even poor geodetic results can be sometimes useful in crustal strain analyses.