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

Autori
Bjelotomić, Olga ; Bašić, Tomislav ; Markovinović, Danko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Izvornik
26th IUGG General Assembly 2015 "Earth and Environmental Sciences for Future Generations" / - , 2015, 275-276

Skup
26th IUGG General Assembly 2015

Mjesto i datum
Prag, Češka Republika, 22.06.2015. - 02.07.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
gravity field modelling ; islands ; geoid

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Geodezija

POVEZANOST RADA