Abstract
The Institute of Geodesy and Cartography in Warsaw, Poland, operates the A10-020 absolute portable gravimeter since November 2008. Numerous gravity measurements with the A10-020 gravimeter, conducted under both laboratory and field conditions, provide a unique material for the estimation of accuracy as well as reliability of the determined gravity. Monthly measurements conducted with the A10-020 at the Borowa Gora Geodetic-Geophysical Observatory, north of Warsaw, provided a 2 year long time series at two laboratory sites and one field station. They have been analysed in terms of their internal consistency and compliance with the previous measurements performed with a few other absolute gravimeters (mainly FG5). The results of a number of calibrations of both, the rubidium oscillator and the polarization-stabilized laser of the A10-020 were considered in the analysis. The effect of applying the frequency standard as well as laser calibration data on the quality of gravity determined was investigated. In addition, the impact of weather conditions as well as variability of metrological parameters on surveyed gravity was taken into consideration when evaluating accuracy and reliability of gravity survey with the A10 gravimeter.
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Acknowledgments
The research was done in the framework of the statutory project “Problems of geodesy and geodynamics” of the Institute of Geodesy and Cartography, Warsaw. Some data were acquired during the campaign of re-surveying the Finnish Gravity Control Network conducted in 2009–2010 as a bilateral project with the Finnish Geodetic Institute.
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Krynski, J., Dykowski, P., Sękowski, M., Mäkinen, J. (2014). On the Estimate of Accuracy and Reliability of the A10 Absolute Gravimeter . In: Rizos, C., Willis, P. (eds) Earth on the Edge: Science for a Sustainable Planet. International Association of Geodesy Symposia, vol 139. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-37222-3_39
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DOI: https://doi.org/10.1007/978-3-642-37222-3_39
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