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Refinement of the geoid model on the islands with sparse terrestrial gravity data (CROSBI ID 635287)

Neobjavljeno sudjelovanje sa skupa | neobjavljeni prilog sa skupa | međunarodna recenzija

Bjelotomić, Olga ; Bašić, Tomislav ; Markovinović, Danko Refinement of the geoid model on the islands with sparse terrestrial gravity data // 26th IUGG General Assembly 2015 Prag, Češka Republika, 22.06.2015-02.07.2015

Podaci o odgovornosti

Bjelotomić, Olga ; Bašić, Tomislav ; Markovinović, Danko

engleski

Refinement of the geoid model on the islands with sparse terrestrial gravity data

Croatia has more than five hundred islands majority of which has the surface smaller than one km square, while the largest island exceeds even 400 km squares. In accordance to the large differences of the islands' surfaces, 10 % of the islands are permanently inhabited while the rest of the islands record an increasing rate of the real estate transactions making them a subject of a great scope of the construction works, which reflects on higher demands for the geoid model on the islands to rely on. Since 2011, current Croatian geoid model have been implemented in the online service of national positioning system in order to allow the real time height transfer between ellipsoidal and orthometric heights. Its accuracy of +/- 4 cm was validated on the Croatian mainland stations while the estimation of its reliability on the islands was not possible due to the lack of gravity and levelling data on the islands. Regarding the new avenues that have occurred in the meantime such as more detailed bathymetric and gravity global models as well as new sparse terrestrial gravity data on the islands, the subtle gravity field modelling have been applied on the Croatian islands, within which the refinement of the geoid model for the islands and part of the Adriatic sea have been evaluated in this paper.

gravity field modelling ; islands ; geoid

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Podaci o prilogu

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Podaci o skupu

26th IUGG General Assembly 2015

poster

22.06.2015-02.07.2015

Prag, Češka Republika

Povezanost rada

Geologija, Geodezija