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Volume :12 Issue : 1 1985      Add To Cart                                                                    Download

Methods of determination of the proper regional gravity from a Bouguer anomaly profile

Auther : E. A B D E L R A H M A N , A. YEHIA AND Y. AMIN

Departments of Geophysics  and Mathematics, Faculty of Science, Cairo University, Giza, Egypt.

 

ABSTRACT

 

The present paper confirms the basic idea of several previous authors on the usefulness of polynomials and least squares cracovian computation in estimating the regional gravity field from Bouguer anomaly profiles. Inverses for construction of formulas for the regional effect, computed on the assumption that the regional field may be expressed either by a straight line or by a quadratic curve, are given. In gravimetric interpretation, it is important to know whether the least squares quadratic curve fits the observed gravity data better than the least squares line. For this reason, two tests are introduced. These are: (1) the coefficient of determination test, and (2) the F-test. The coefficient of determination test and the test-function have been applied to three Bouguer anomaly profiles from the northern region of the Western Desert of Egypt to study the behavior of the regional field along them.

 

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