Results 81 to 90 of about 948 (186)
Journal of Advances in Modeling Earth Systems, Volume 17, Issue 12, December 2025.Abstract For over 60 years, an approximation involving spherical geopotentials has underlain the representation of gravity in global numerical models of Earth's atmosphere and oceans. This article explores how departures from sphericity can be allowed by assuming spheroidal geopotentials instead. A route to more accurate model formulation is indicated,
Andrew Staniforth, Andy White
wiley +1 more source
Braided Rivers From SWOT: Water Surface Dynamics Over the Multi‐Channel Brahmaputra River
Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.Abstract The Surface Water and Ocean Topography (SWOT) satellite can simultaneously observe river elevation, width, and slope with high spatio‐temporal coverage and resolution (Fu et al., 2024, https://doi.org/10.1029/2023gl107652). The River Single‐Pass (RiverSP) product from SWOT provides geolocated river surface water dynamics with global coverage ...
Sarah E. Franze +3 more
wiley +1 more source
Deriving Intertidal Topography From SWOT Data and Sentinel‐2 Data
Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.Abstract The Surface Water and Ocean Topography (SWOT) mission, initially designed to observe oceans and inland waters, proves valuable for mapping intertidal flat topography. This study presents a fusion method that integrates freely available SWOT interferometric altimetry data with Sentinel‐2 imagery.
Mingzhi Sun +9 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
doaj
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
doaj +1 more source
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
doaj +1 more source
Slope Correction for Ocean SAR Altimetry
Earth and Space Science, Volume 12, Issue 11, November 2025.Abstract Since the 2010 launch of Cryosat‐2, a new generation of altimeters, referred to as SAR altimetry, has emerged and partially replaced the previous conventional altimeters known as Low Resolution Mode (LRM) altimetry. A surface slope correction has been previously developed for LRM altimetry.
Juliette Gamot +5 more
wiley +1 more source
Mutual evaluation of global gravity models (EGM2008 and GOCE) and terrestrial data in Amazon Basin, Brazil [PDF]
, 2013 The gravity observations of the satellite GOCE have a global homogeneous coverage and precision. This data set constitutes an independent new tool to control the quality of terrestrial gravity data. Terrestrial data reach higher resolution and precision,
Bomfim E. P. +2 more
core +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
doaj +1 more source
AVALIAÇÃO DA UTILIZAÇÃO DOS MODELOS GEOPOTENCIAIS EGM2008 E SGG-UGM-2 PARA A CARACTERIZAÇÃO GRAVIMÉTRICA DA ELEVAÇÃO DO RIO GRANDE [PDF]
, 2021 A gravimetria é o ramo da Geofísica dedicado ao estudo do campo da gravidade terrestre, cuja modelagem matemática é baseada normalmente nas medições da componente vertical da aceleração da gravidade.
Bernardino Lopes, Alexandre +3 more
core