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Comparison of frediction accuracies of 5°×5° mean gravity anomalies from two methods
Abstract Two methods of mean gravity anomaly prediction are studied. In predicting the 5°×5° accuracies, covariance functions of 1°×1° blocks are used. The 1°×1° covariance functions are derived from the covariance function of point anomalies. It is found that though each method gives different accuracy values for different 1°×1° block configurations, the arithmetic mean method of prediction gives practically the same results as the minimum variance method if the number of known 1°×1° blocks is more than Ten. Computations carried out at different latitudes using appropriate covariance functions gave similar results.
Comparison of frediction accuracies of 5°×5° mean gravity anomalies from two methods
Abstract Two methods of mean gravity anomaly prediction are studied. In predicting the 5°×5° accuracies, covariance functions of 1°×1° blocks are used. The 1°×1° covariance functions are derived from the covariance function of point anomalies. It is found that though each method gives different accuracy values for different 1°×1° block configurations, the arithmetic mean method of prediction gives practically the same results as the minimum variance method if the number of known 1°×1° blocks is more than Ten. Computations carried out at different latitudes using appropriate covariance functions gave similar results.
Comparison of frediction accuracies of 5°×5° mean gravity anomalies from two methods
Obenson, G. (author)
1972
Article (Journal)
Electronic Resource
English
Geodäsie , Geometrie , Geodynamik , Mathematik , Mineralogie
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