Open access to regional geoid models: the International Service for the Geoid [PDF]
Earth System Science Data, 2021 The International Service for the Geoid (ISG, https://www.isgeoid.polimi.it/, last access: 31 March 2021) provides free access to a dedicated and comprehensive repository of geoid models through its website.
M. Reguzzoni +10 more
doaj +8 more sources
Precise Geoid Determination in the Eastern Swiss Alps Using Geodetic Astronomy and GNSS/Leveling Methods [PDF]
SensorsAstrogeodetic deflections of the vertical (DoVs) are close indicators of the slope of the geoid. Thus, DoVs observed along horizontal profiles may be integrated to create geoid undulation profiles.
Müge Albayrak +4 more
doaj +2 more sources
Dataset from Scintrex CG-5 gravity meters acquired at the Zhetygen calibration line in KazakhstanZenodo [PDF]
Data in BriefThe article provides a dataset derived from Scintrex CG-5 gravity meter observation files collected during five years of annual measurements along the Zhetygen calibration line utilizing three meters.
Roman Sermiagin +6 more
doaj +2 more sources
Geoid Undulation Model as Vertical Reference in Indonesia [PDF]
Scientific DataIndonesia released a new regional geoid model in 2020—the Indonesian Geoid 2020 (INAGEOID2020). It covers the Indonesian region with a spatial resolution of 0.01 × 0.01 degree with the unit in meters.
Arisauna Pahlevi +19 more
doaj +2 more sources
Two alternative techniques for fitting the gravimetric geoid for Egypt
Contributions to Geophysics and Geodesy, 2023 In this paper, two proposed geoid fitting techniques for Egypt's gravimetrically determined geoid and Global Positioning System GPS/levelling-derived geoid are introduced. First, any errors in the available GPS stations are ruled out.
Hussein ABD-ELMOTAAL, Atef MAKHLOOF
doaj +1 more source
Geoids in general relativity: geoid quasilocal frames [PDF]
Classical and Quantum Gravity, 2016 24 pages, 8 figures; v2: reference added; v3: introduction clarified, reference ...
Oltean, Marius +3 more
openaire +3 more sources
Geoid or Quasi-Geoid? A Short Comparison
, 2023 AbstractThis article is a short introduction to the debate on choosing the geoid and orthometric heights or the quasi-geoid and normal heights as the vertical coordinate system. It mainly compiles some more or less already known facts for comparing the two systems.
Sjöberg, Lars E., Abrehdary, Majid
openaire +2 more sources
Geodesy and Geodynamics, 2023 The Global Navigation Satellite System (GNSS) positioning method has been significantly developed in geodetic surveying. However, the height obtained through GNSS observations is given in a geodetic height system that needs to be converted to orthometric
Rahayu Lestari +6 more
doaj +1 more source
GRAVIMETRIC GEOID MODELLING OVER PENINSULAR MALAYSIA USING TWO DIFFERENT GRIDDING APPROACHES FOR COMBINING FREE AIR ANOMALY [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 We investigate the use of the KTH Method to compute gravimetric geoid models of Malaysian Peninsular and the effect of two differing strategies to combine and interpolate terrestrial, marine DTU17 free air gravity anomaly data at regular grid nodes ...
M. F. Pa’suya +7 more
doaj +1 more source
A High-Resolution Gravimetric Geoid Model for Kuwait Using the Least-Squares Collocation
Frontiers in Earth Science, 2022 A new gravimetric geoid model, the KW-FLGM2021, is developed for Kuwait in this study. This new geoid model is driven by a combination of the XGM2019e-combined global geopotential model (GGM), terrestrial gravity, and the SRTM 3 global digital elevation ...
Hamad Al-Ajami +4 more
doaj +1 more source