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Regional Models

Ukraine and Moldova (UQG2011)


  Authors: A.N. Marchenko, et al.     Created: 2011    Resp: A.N. Marchenko  
      Status: PRIVATE    
Description:
The UQG2011 model is a gravimetry-only for the Ukraine and Moldova area with a grid resolution of 2'x3'. It is referred to the GRS80 ellipsoid and it was constructed from the following two data sets: (a) digitized gravity anomalies from BGI and (b) gravity anomalies in the Black Sea area derived from altimetry data of TOPEX/POSEIDON, ERS-1, ERS-2, JASON-1, ENVISAT, and GFO missions for the period from 1992 to 2005 year, corrected by CSL AVISO for different geophysical phenomena and instrumental effects. Because of data gaps in the corrected SSH of the Black Sea, additional BGI and national marine point gravity measurements were considered. The remove-restore technique was applied to get rid of the long wavelength constituent of the gravity field by using the EGM2008 global model up to degree and order 720. Terrain reductions were based on the 3"x3" SRTM3 model. The prediction of the residual height anomalies was performed by collocation with regularization, where the regularization parameter is a weighting factor multiplied to the noise covariance. Comparisons of the gravimetric UQG2011 quasigeoid with GPS/levelling data show differences with a standard deviation smaller than 4 cm.

References:
A.N. Marchenko, O.V. Kucher, D.A. Marchenko (2015). Regional quasigeoid solutions for the Ukraine area. Geodynamics, 2(16), pp. 7-14.
D.A. Marchenko, A.N. Marchenko, O.V. Kucher (2013). On the UQG2011 quasigeoid solution for the Ukraine and Moldova area. EGU General Assembly 2013, Vienna, Austria.


Ukraine and Moldovia