Numerical study on orthometric heights using a synthetic Earth gravity model
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The fundamental problem of orthometric heights is that the mean gravity value cannot be determined due to the lack of precise topographical mass information. This thesis employs a global synthetic Earth gravity model, based on known and simulated global masses, in order to circumvent this problem. Applying forward gravity modelling techniques, the behaviour of gravity inside the topography as well as orthometric heights are studied in detail.
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A new degree-2190 (10 km resolution) gravity field model for Antarctica developed from GRACE, GOCE and Bedmap2 dataHirt, Christian; Rexer, M.; Scheinert, M.; Pail, R.; Claessens, Sten; Holmes, S. (2015)The current high-degree global geopotential models EGM2008 and EIGEN-6C4 resolve gravity field structures to ~10 km spatial scales over most parts of the of Earth’s surface. However, a notable exception is continental ...
Hirt, Christian; Kuhn, Michael; Claessens, Sten; Pail, R.; Seitz, K.; Gruber, T. (2014)This paper describes the computation and analysis of the Earth’s short-scale gravity field through high-resolution gravity forward modelling using the Shuttle Radar Topography Mission (SRTM) global topography model. We ...
Hirt, Christian; Rexer, M.; Claessens, Sten (2015)ESA (European Space Agency) has released a series of new-generation Earth gravity field models computed from gradiometry and GPS observations carried out aboard the GOCE (Gravity field and Ocean Circulation Explorer) ...