Results 21 to 30 of about 16,098 (281)
Evaluation of recent combined global geopotential models in Brazil
Journal of Geodetic Science, 2018 The aim of this paper is to present a quantitative analysis of the adequacy of the main currently existing combined Global Geopotential Models (GGMs) for modeling normal-geoid heights throughout Brazil.
Nicacio E. +2 more
doaj +1 more source
Evaluation of the geopotential value W0LVD of China
Geodesy and Geodynamics, 2017 Estimation of the zero-height geopotential value W0LVD for the CVD (China Vertical Datum) plays a fundamental role in the connection of traditional height reference systems into a global height system.
Lin He, Yonghai Chu, Nan Yu
doaj +1 more source
Geodetski Vestnik, 2022 This study aims to analyze the quality of several local reference quasigeoid surfaces obtained from several Global Geopotential Models (GGM) relative to the official quasigeoid solution of Serbia (SQM2011) and GNSS/dh observations for the territory of ...
Marko D. Stanković +2 more
doaj +1 more source
Journal of King Saud University: Engineering Sciences, 2023 Global Navigation Satellite System (GNSS) provides ellipsoidal heights, whereas engineering projects need orthometric heights of points. Thus, to take advantage of GNSS in engineering work, the relation between orthometric and ellipsoid height must be ...
Hamdy M. Ahmed +2 more
doaj +1 more source
Atmospheric Circulation of Brown Dwarfs: Jets, Vortices, and Time Variability [PDF]
, 2014 A variety of observational evidence demonstrates that brown dwarfs exhibit active atmospheric circulations. In this study we use a shallow-water model to investigate the global atmospheric dynamics in the stratified layer overlying the convective zone on
Showman, Adam P., Zhang, Xi
core +1 more source
Remote Sensing, 2020 The launch of dedicated satellite missions at the beginning of the 2000s led to significant improvement in the determination of Earth gravity field models.
Bihter Erol +2 more
doaj +1 more source
MARINE GEOID UNDULATION ASSESSMENT OVER SOUTH CHINA SEA USING GLOBAL GEOPOTENTIAL MODELS AND AIRBORNE GRAVITY DATA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 Global geopotential models (GGMs) are vital in computing global geoid undulations heights. Based on the ellipsoidal height by Global Navigation Satellite System (GNSS) observations, the accurate orthometric height can be calculated by adding precise and ...
N. M. Yazid +6 more
doaj +1 more source
Egyptian Journal of Remote Sensing and Space Sciences, 2022 The goal of this research is to assess the accuracy of the global geopotential models (GGMs) from 2018 until the present in the Red Sea. The assessment was done by using the gravitational spectral analysis of models with each other and with the ...
Mohamed Abdallah +3 more
doaj +1 more source
Polar mesoscale cyclones in the northeast Atlantic: Comparing climatologies from ERA-40 and satellite imagery [PDF]
, 2006 Polar mesoscale cyclones over the subarctic are thought to be an important component of the coupled atmosphere–ocean climate system. However, the relatively small scale of these features presents some concern as to their representation in the ...
Alan Condron +31 more
core +1 more source
Determination of deflection of the vertical components by using global geopotential model EGM2008 [PDF]
Tehnika, 2018 This paper presents the determination of the vertical deflection components using the Global Geopotential Model EGM2008. The components are defined in two groups of points: 4083 points are relatively correctly distributed across the territory of Serbia ...
Odalović Oleg R. +4 more
doaj