Results 1 to 10 of about 1,044,226 (312)
Improvement of GOCE-Based Global Geopotential Models for Gravimetric Geoid Modeling in Turkey
Geosciences, 2022 This study investigates the contribution of global geopotential models which are calculated with GOCE satellite mission data to the improvement of gravimetric geoid models in Turkey.
Mustafa Serkan Isik +3 more
doaj +3 more sources
Assessment of hybrid geoids in Chile and Spain, combining GGM and GNSS/Leveling observations
Geodesy and Geodynamics, 2021 This research presents the results for analyses done to five geopotential global models (GGM), comparing them with ground data from GNSS and leveling in heterogenic zones from the geodetic perspective, in Chile and Spain.
José Antonio Tarrío Mosquera +3 more
doaj +5 more sources
Assessment of Global Geopotential Models for Modelling Malaysia Marine Geoid
International Journal of Integrated Engineering, 2022 The evaluation towards global geopotential models represents a significant part in modelling the localised Marine Geoid. The marine geoid provides the vertical reference information in Marine Spatial Data Infrastructures (MSDI) development response to United Nations Sustainable Development Goals 14 for the ...
Yahaya, Noor Anim Zanariah +6 more
openaire +3 more sources
Global Geopotential Models assessment in Ecuador based on geoid heights and geopotential values
Journal of Geodetic Science, 2023 Since the 1960s, the analysis of disturbed satellite orbits to infer Earth’s gravity field functionals has been an important element in determining the Earth’s gravitational field. The long wavelengths of the gravitational field are recovered through the
Carrión José +3 more
doaj +2 more sources
Evaluation of normal heights by the means of global navigation satellite systems and global geopotential model [PDF]
Glasnik Srpskog Geografskog Društva, 2015 This paper presents geometrically and physically defined height systems, along with their evaluation by the means of Global Navigation Satellite Systems (GNSS) and Global Geopotential Models (GGM).
Odalović Oleg +4 more
doaj +4 more sources
Estimation of Geopotential Value W0 for the Geoid and Local Vertical Datum Parameters
Remote Sensing, 2023 Unification of the global vertical datum has been a key problem to be solved for geodesy over a long period, and the main challenge for unifying the global vertical datum system is to determine the geopotential value W0 of the geoid and to calculate the ...
Xinyu Liu +4 more
doaj +1 more source
The Refined Gravity Field Models for Height System Unification in China
Remote Sensing, 2022 A unified height datum is essential for global geographic information resource construction, ecological environment protection, and scientific research.
Panpan Zhang +6 more
doaj +1 more source
ANALYSIS OF ISOSTATICALLY-BALANCED CORTICAL MODELS USING MODERN GLOBAL GEOPOTENTIAL MODELS [PDF]
Boletim de Ciências Geodésicas, 2017 Abstract: The knowledge of the Earth's gravity field and its temporal variations is the main goal of the dedicated gravity field missions CHAMP, GRACE and GOCE. Since then, several global geopotential models (GGMs) have been released. This paper uses geoid heights derived from global geopotential models to analyze the cortical features of the Tandilia ...
Claudia Infante +2 more
openaire +3 more sources
Comparison of ECMWF analyses with GPS radio occultations from CHAMP [PDF]
Annales Geophysicae, 2008 A climatological validation of the 6-hourly operational ECMWF troposphere and lower stratosphere temperatures as well as geopotential heights between 1000 and 10 hPa is performed using the 2001–2007 (80 months from May 2001 to December 2007) CHAMP ...
T. Schmidt +7 more
doaj +1 more source
Earth and Planetary Physics, 2020 Global geopotential models have not included the very high frequencies of the Earth’s external gravity field. This is called omission error. This omission error becomes more important in mountainous areas (areas with highly variable topography). The work
Paul Gautier Kamto +4 more
doaj +1 more source