Results 31 to 40 of about 173 (112)
The Quasigeoid: Why Molodensky Heights Fail
, 2023 AbstractAny height system has two constituents: A reference surface upon which all heights are equal to zero, and a prescription for how observed heights and height differences will be related to that surface. That prescription is typically formulated with reference to Earth’s gravity field, but in this contribution, we will use the concept of metric ...
Robert Kingdon +4 more
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The Influence of Bathymetry on Regional Marine Geoid Modeling in Northern Europe
Journal of Marine Science and Engineering, 2022 Although Northern Europe has been the target area in many regionwide geoid determination studies, the research has been land-focused, neglecting bathymetry information. With new projects, such as the Baltic Sea Chart Datum 2000, the attention is shifting
Sander Varbla
doaj +1 more source
GOCE quasigeoid performance for Norway
International Journal of Applied Earth Observation and Geoinformation, 2015 Abstract We have compared the EGM08/GOCE quasigeoid with the height anomalies of a precise GPS/levelling network in the south of Norway where the GOCE ground tracks are dense and the gravitational signal has been described as rough. It was found that the inclusion of the GOCE gravity potential can improve the quasigeoid fit with the GPS/levelling ...
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On the Applicability of Molodensky’s Concept of Heights in Planetary Sciences
Geosciences, 2018 Geometric heights, defined with respect to a geometric reference surface, are the most commonly used in planetary studies, but the use of physical heights defined with respect to an equipotential surface (typically the geoid) has been also acknowledged ...
Robert Tenzer, Ismael Foroughi
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USE OF A SATELLITE GEODESIC NETWORK IN THE QUASIGEOID MODEL
BULLETIN of Russian Academy of Natural Sciences, 2021 The article deals with the possibility of using seismic exploration in solving problems of ore geology in complex mining and geological conditions of Kazakhstan. The substantiation and characterization of geological and geophysical conditions for conducting experimental 3D seismic surveys at the deposits of the Zhilandinsky group of copper ...
E.V. An +3 more
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Contributions to Geophysics and Geodesy, 2020 The paper presents local quasigeoid modelling in Slovakia using the finite volume method (FVM). FVM is used to solve numerically the fixed gravimetric boundary value problem (FGBVP) on a 3D unstructured mesh created above the real Earth's surface ...
Róbert ČUNDERLÍK +2 more
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Pot do novega modela geoida v Sloveniji ( = Towards a new geoid model of Slovenia) [PDF]
Geodetski Vestnik, 2017 The geoid model is a component of the national coordinate system. This paper presents the main concept and role of the geoid within geodesy and other geo-sciences.
Miran Kuhar
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Remote Sensing, 2023 The high-precision regional geoid model provides important fundamental geospatial information for developing and applying many disciplines. Deterministic and stochastic modifications are applied to Stokes’s and Hotine’s formulas of geoid modeling to ...
Qiong Wu +4 more
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Earth and Space Science, Volume 11, Issue 12, December 2024.Abstract Satellite‐derived global digital elevation models (DEMs) are essential for providing the topographic information needed in a wide range of hydrological applications. However, their use is limited by spatial resolution and vertical bias due to sensor limitations in observing bare terrain.
Jana Marešová +10 more
wiley +1 more source
How to Find Accurate Terrain and Canopy Height GEDI Footprints in Temperate Forests and Grasslands?
Earth and Space Science, Volume 11, Issue 10, October 2024.Abstract Filtering approaches on Global Ecosystem Dynamics Investigation (GEDI) data differ considerably across existing studies and it is yet unclear which method is the most effective. We conducted an in‐depth analysis of GEDI's vertical accuracy in mapping terrain and canopy heights across three study sites in temperate forests and grasslands in ...
Vítězslav Moudrý +18 more
wiley +1 more source