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- W4220811549 abstract "<p>In the frame of the &#8220;Modernization of the Hellenic Gravity Network&#8221; project, we aim at computing a high resolution and accuracy geoid for Greece. For this reason, we selected initially two test areas in northern and southern Greece covering an area of about 100 km<sup>2</sup> each, where gravity and GNSS/leveling measurements were carried out. Based on these recent, well documented and reliable measurements, we investigate the use of different techniques for the determination of the geoid, including Least-Squares Collocation, FFT and Input-Output Systems, following the Remove-Compute-Restore approach. For the remove/restore part, we examine different Residual Terrain Modeling schemes along with the use of older and recent Global Geopotential Models. Moreover, we compute the geoid-quasigeoid separation term using different approaches. We then validate the results obtained against the new GNSS/leveling measurements across the test areas and draw conclusions towards the determination of a regional geoid for Greece.</p>" @default.
- W4220811549 created "2022-04-03" @default.
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- W4220811549 date "2022-03-26" @default.
- W4220811549 modified "2023-09-23" @default.
- W4220811549 title "Investigation of different geoid computation techniques in the frame of the ModernGravNet project" @default.
- W4220811549 doi "https://doi.org/10.5194/egusphere-egu22-650" @default.
- W4220811549 hasPublicationYear "2022" @default.
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