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1
EN
International concept of renovation of the old tumbledown astronomic observatory at the Mt. Pip-Ivan in Charnohora (Eastern Carpathians) and establishment in it the Ukrainian-Polish scientific station emerged seven years ago as a result of a bilateral initiative of the scientists-geodesists from the University "Lviv Polytechnic" and tbe Warsaw University of Technology. After that, during a whole series of Ukrainian-Polish discussions which incIuded representatives of different scientific institutions, the project of creation of the Ukrainian-Polish geophysical observatory with the permanently working satellite, gravimetric tidal, seismic, magnetic, meteorological and ecological laboratories as wen as with the recreation and tourist centre was developed. It is also envisaged to release in the Cuture this rebuild observatory to the organisation of Central European Initiative (CEl) as the international training and educational centre. In January 2002 the Ukrainian-Polish Coordination Scientific Council was establisbed under the chairmanship of a representative of the Ivano-Frankivsk administration district. The deputy chairmen of this Council are: from the side of Ukraine - Dr Kornelij Tretyak, and from Polish side - Prof. Dr Janusz Sledzinski. In summer 2002 the scientists from Cracow Mining Academy and Lviv Polytechnic carried out successfully the GPS campaign that incorporated few the highest picks in Charnohora including th e Mt. Pip-Ivan. The creation ofthe Ukrainian-Polish geophysical observatory on the top of the highest part of the Eastern Carpathians is commonly recognised as a very nice example of the fruitful and effective cross-border cooperation between Ukraine and Poland. Lately this concept met with approval of the highest government authorities of both countries.
2
Content available remote The contribution of the university of Padova to Central European Geodesy
EN
The definition and maintenance of a geodetic reference system by modern techniques requires systematic temporal changes of the position of the defining stations to be taken in to account. Most of these drifts are accommodated by present day plate tectonics. If the lithospheric plate to which a given station belongs were perfectly rigid, then a simple plate model based upon rigid rotations about Eulerian poles would suffice to predict the horizontal coordinates of each station at any epoch, once the coordinates of that station are known at a reference epoch. In Europe, there are stations well located inside old, stable areas which may be considered rigid, but other stations are at or near continental margins undergoing active deformation, or are within a relatively recent portion of a tectonic unit subject to intraplate stress or volcanism. Velocities of stations in the most recent ITRF solutions do, in fact, exbibit in some cases departures from the NUVELIA NNR plate model in Europe and elsewhere, but the reasons for these discrepancies are not always well understood. For example, if a particular station of the network exbibits a velocity anomaly relative to a reference velocity model, then it is of interest to understand the reasons for the anomaly, and its spatial extent, that is if it is local to that station, or if nearby stations are also affected, and with which tapering as a function of distance. As part of the research activities in support of the CEI/CERGOP and EUREF, the time series of coordinates of European Permanent Network (EPN) stations in the Alpine - Mediterranean - Dinarides region are examined both in the time and space domains, and hypotheses are formulated on the reasons of systematic departures from linearity. The time domain analysis consists in the construction of the Power Spectra I Density and autocorrelation function of the time series of each coordinate for each station, the assessment of the type(s) of noise and periodicities, and an estimate of the uncertainty in the velocity. The space domain approach consists in cross correlating time series of stations and investigating the cross correlation function as a function of the space separation between pairs of stations. The combined analysis in the space and time domains of the time series provides a description of small but non negligible changes of coordinates the pernanent stations which should be taken into account if the realisation of the reference system is to be as accurate as the coordinates of the defining stations.
3
Content available remote Structuring CERGOP information, approaches to a database
EN
International concept of renovation of the old tumbledown astronomic observatory at the Mt. Pip-Ivan in Charnohora (Eastern Carpathians) and establishment in it the Ukrainian- Polish scientific station emerged seven years ago as a result of a bilateral initiative of the scientists-geodesists from the University "Lviv Polytechnic" and the Warsaw University of Technology. After that, during a whole series of Ukrainian-Polish discussions which included representatives of different scientific institutions, the project of creation of the Ukrainian-Polish geophysical observatory with the permanently working satellite. gravimetric tidal, seismic, magnetic, meteorologic al and eeologieal laboratories as well as with the recreation and tourist centre was developed. It is also envisaged to release in the future this rebuild observatory to the organisation of Central European Initiative (CEl) as the international training and educational centre. In January 2002 the Ukrainian-Polish Coordination Scientific Council was established under the chairmanship of a representative of the lvano-Frankivsk administration district. The deputy chairmen of this Council are: from the side of Ukraine - Dr. Kornelij Tretyak, and from Polish side - Prof. Dr. Janusz Śledziński. In summer 2002 the scientists from the Cracow Academy of Mining and Metallurgy and Lviv Polytechnic carried out successfully the GPS campaign that incorporated few the highest picks in Charnohora including the Mt. PipIvan to the geodynamic network of Eastern Carpathians. The creation of the Ukrainian-Polish geophysical observatory on the top of the highest part of the Eastern Carpathians is commonly recognised as a very nice example of the fruitful and effective cross-border cooperation between Ukraine and Poland. Lately this concept met with approval of the highest government authorities of both countries.
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