An optimal geodetic dynamic reference frame realization for Greece: Methodology and application

Stylianos Bitharis, Dimitrios Ampatzidis, Christos Pikridas

Abstract


On this study the theoretical and practical approach of an optimal geodetic reference
frame realization is described in detail. The Hellenic area due to its strong geodynamic behavior
creates a rather inhomogeneous velocity field. This issue plays a critical role in stable and longterm
geodetic datum. The methodology of the Minimization of the Kinetic Energy Criterion
(MKEC) is defined and analyzed on a permanent GNSS network consisting of 151 stations. The
sites velocities values were estimated from seven years continuously data. The application
formula shows that the kinematic energy is minimized more than 60 percent in two different
approaches for the International Terrestrial Reference Frame and the European Terrestrial
Reference System 1998 (ETRS89). In addition, the realization of the ETRS89 approach in Greece
is not offering any significant advantage. However, we proposed a new strategy, which minimizes
the total kinetic energy and it is found effective in local areas with strong geodynamic activity like
the Greece case.


Keywords


Local Reference Frame;Velocity field;GNSS Network;Kinetic energy;Geodetic datum

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References


DOI: http://dx.doi.org/10.4401/ag-7292


 

Published by INGV, Istituto Nazionale di Geofisica e Vulcanologia - ISSN:  2037-416X