On the reduction of geodetic and gravimetric measurements on technogenic and geodynamic polygons

Abstract

When conducting geodetic and gravimetric measurements, there is a problem ofprojecting them to the reference surface. Since the gravitational field is inhomogeneous un-der the real conditions, the problem arises of determining the corrections to the measuredvalues of gravitational acceleration in order to use the obtained data for the subsequent so-lutions of projection problems. Currently, the solution to this problem is performed usinga Bouguer reduction, which requires information about the internal structure of the up-per layer of the earth’s surface, topography, etc. The purpose of this study is to developa methodological approach that would allow to determine the reduction (projection) correc-tions for gravitational acceleration on technogenic and geodynamic polygons without usingdata about the distribution of surface layer density and topography. The research processis based on the use of mathematical analysis methods and a wide range of experimentalgeodetic and gravimetric measurements. In the course of the performed researches, an algo-rithm was obtained and a practical implementation of the determination of the correctionsin the measured values of gravitational acceleration on the basis of geodetic and gravimet-ric measurements was carried out at the certain geodynamic polygon in order to bring allcorrections to one level surface.

Keywords

• correction
• gravitational acceleration
• level surface
• gravity reduction