Abstract

I congratulate the authors on their elegant mathematical approach to the computation of gravity and magnetic anomalies due to arbitrary bodies. But I consider their concluding remark, “In this approach, it is not necessary to perform integration of the dipolar magnetic field or the gravitational field due to a point mass,” to be inaccurate and misleading. The method proposed by the authors represents, in effect, the division of arbitrary bodies into cubes of a small side and numerical integration [their equations (20) and (25)] of the effects of “equivalent” dipoles or point masses located at the centers of these cubes. Hence, the smaller the side of the cube, the better the accuracy of the method.

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