Results 101 to 110 of about 3,699 (225)
International Journal of Environment and Geoinformatics, 2021 The advent of Global Navigation Satellite System (GNSS) and Earth Gravitational Model (EGM)particularly Global Positioning System (GPS) has modernized geodetic surveying in providing horizontal and vertical positions of points with a sub-meter level of ...
Herbert TATA, Raufu OLATUNJİ
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Vegetation height products between 60° S and 60° N from ICESat GLAS data. [PDF]
, 2012 We present new coarse resolution (0.5 ×0.5 )vegetation height and vegetation-cover fraction data sets between 60 S and 60 N for use in climate models and ecological models.
Berni, J.A. +10 more
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Earth and Space Science, Volume 12, Issue 7, July 2025.Abstract The launch of the Surface Water and Ocean Topography (SWOT) satellite in December 2022 started a new era of swath altimetry, introducing an unprecedented global data set of high‐resolution two‐dimensional water level imagery. During its initial calibration and validation phase (cal/val), SWOT conducted daily observations for 3 months providing
I. D. Lichtman +6 more
wiley +1 more source
Revista Brasileira de Cartografia, 2011 Neste trabalho são apresentadas a determinação e análise da diferença de geopotencial do Datum Vertical Brasileiro em relação ao geoide associado ao Earth Gravity Model 2008 (EGM2008).
Vagner Gonçalves Ferreira +2 more
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Exploration of tectonic structures with GOCE in Africa and across-continents [PDF]
, 2015 The gravity anomaly field over the whole Earth obtained by the GOCE satellite is a revolutionary tool to reveal geologic information on a continental scale for the large areas where conventional gravity measurements have yet to be made.
Braitenberg, Carla
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Global Assessment of Lake Surface Morphology and Its Impact on Water Volume Estimation
Water Resources Research, Volume 61, Issue 7, July 2025.Abstract Lake surface morphology, an essential yet underexplored feature of hydrological systems, remains poorly understood, including its effects on water volume estimation. This study investigates north‐south surface profiles of 147 lakes worldwide using ICESat‐2 altimetry data (2018–2024).
Jing Zhang +3 more
wiley +1 more source
Template-based smoothing functions for data smoothing in Geodesy
Geodesy and Geodynamics, 2020 This paper is aimed at the derivation of a discrete data smoothing function for the discrete Dirichlet condition in a regular grid on the surface of a spheroid.
M. Kiani
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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
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Geoid heights in Costa Rica, Case of Study: Baseline Along the Central Pacific Zone
Ingeniería, 2019 A precise orthometric height (H) and orthometric height difference (ΔH) determination is required in many fields like construction, geodesy and geophysics.
Alonso Vega Fernádez +2 more
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, 2016 The performance of Earth Gravitational Model 2008 (EGM2008) is evaluated over Nairobi County and its environs using GPS/levelling and free-air gravity anomalies. The data used include 18 GPS/levelling and 97 gravity points.
P. Odera
semanticscholar +1 more source