Accession Number : AD0436638


Title :   ACCURACY OF MEAN GRAVITY ANOMALIES OBTAINED FROM POINT AND PROFILE MEASUREMENTS,


Corporate Author : OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS


Personal Author(s) : Moritz,Helmut


Report Date : Dec 1963


Pagination or Media Count : 28


Abstract : Mean gravity anomalies for a certain rectangular area (block) can be computed from observed point or profile gravity values using some interpolation method (e.g., representation or least squares interpolation). If the covariance function of the gravity anomalies is known and the interpolation method is specified, then the accuracy (standard error and error covariance) of the mean anomalies can be computed without any additional numerical data. The formulas for this purpose are evaluated numerically for different sizes of blocks and different interpolation methods using an estimate for the covariance function. The integrals involved are approximated by summations performed by a highspeed computer. The results show the accuracies obtainable with a given observational material, by different interpolation methods. They are useful for numerical studies on the error propagation in the computation of gravimetric quantities (e.g., geoid undulations). (Author)


Descriptors :   *GRAVITY , ANOMALIES , NUMERICAL METHODS AND PROCEDURES , STATISTICAL FUNCTIONS , LEAST SQUARES METHOD , ERRORS , MEASUREMENT , NUMERICAL INTEGRATION , STATISTICAL ANALYSIS , COMPUTER PROGRAMMING , TABLES(DATA) , MATHEMATICAL PREDICTION , ANALYSIS OF VARIANCE , GEODESY


Distribution Statement : APPROVED FOR PUBLIC RELEASE