Evaluation of gravity field model EIGEN-6C4 by means of various functions of gravity potential, and by GNSS/levelling

Authors

  • Jan Kostelecký Research Institute of Geodesy, Topography and Cartography (VÚGTK) p.r.i., CZ - 20566 Zdiby Institute of Geodesy and Mining Surveying, HGF TU Ostrava CZ – 708 33 Ostrava-Poruba, Czech Republic http://orcid.org/0000-0002-8053-6184
  • Jaroslav Klokočník Astronomical Institute, Academy of Sciences of the Czech Republic, p.r.i. (ASÚ), CZ – 251 65 Ondřejov Observatory
  • Blažej Bucha Department of Theoretical Geodesy, Faculty of Civil Engineering, STU in Bratislava, SK – 81005 Bratislava
  • Aleš Bezděk Astronomical Institute, Academy of Sciences of the Czech Republic, p.r.i. (ASÚ), CZ – 251 65 Ondřejov Observatory http://orcid.org/0000-0003-2790-2664
  • Christoph Förste GFZ German Research Centre for Geosciences, Dept. Geodesy and Remote Sensing, Telegrafenberg, D – 14473 Potsdam, Germany

DOI:

https://doi.org/10.14311/gi.14.1.1

Keywords:

Gravity field models, EGM 2008, Eigen-6C4

Abstract

The combined gravity field model EIGEN-6C4 (Förste et al., 2014) is the latest combined global gravity field model of GFZ Potsdam and GRGS Toulouse. EIGEN-6C4 has been generated including the satellite gravity gradiometry data of the entire GOCE mission (November 2009 till October 2013) and is of maximum spherical degree and order 2190. In this study EIGEN-6C4 has been compared with EGM2008 to its maximum degree and order via gravity disturbances and Tzz part of the Marussi tensor of the second derivatives of the disturbing potential. The emphasis is put on such areas where GOCE data (complete set of gradiometry measurements after reductions) in EIGEN-6C4 obviously contributes to an improvement of the gravity field description. 

GNSS/levelling geoid heights are independent data source for the evaluation of gravity field models. Therefore, we use the GNSS/levelling data sets over the territories of Europe, Czech Republic and Slovakia for the evaluation of EIGEN-6C4 w.r.t. EGM2008.

References

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Geoinformatics FCE CTU 14(1), 2015

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Published

2015-06-27

Issue

Vol. 14 No. 1 (2015)

Section

Articles

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