Determination of the vertical gradients based on Eötvös torsion balance measurements

Abstract

The value of the vertical gradient in any given point can be determined using Haalck’s method. The vertical gradient is the sole element of the Eotvos-tensor, which cannot be measured by the Eotvos torsion balance; however, the Haalck-method enables its calculation through interpolation. Eotvos-tensor measurement fluctuation between two adjacent points must be linear in order for the Haalck-method to work. This paper sought to analyze this assumption of linearity.