Results 91 to 100 of about 2,632 (195)
Numerical simulations of the nonlinear Molodensky problem [PDF]
, 2013 We present a boundary element method to compute numerical approximations to the non-linear Molodensky problem, which reconstructs the surface of the earth from the gravitational potential and the gravity vector.
Banz, Lothar +3 more
core +3 more sources
Monitoring Water From Space: An Illustration in Death Valley, California
Geophysical Research Letters, Volume 52, Issue 5, 16 March 2025.Abstract Climate change and human activity are dramatically reshaping how water is distributed on Earth. High quality observations and products that bridge the gap between low‐level data and actionable information are needed to support the understanding of current and future water availability. Two new developments are addressing these needs.
B. Buzzanga +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
doaj
Современное состояние цифровых моделей геоида в континентальных районах [PDF]
, 2016 THE CURRENT STATE OF DIGITAL GEOID MODEL IN CONTINENTAL AREAS B. NEPOKLONOV, M. ABAKUSHINAПредставлено современное состояние работ в области создания региональных и национальных цифровых моделей геоида в районах суши по гравиметрическим данным ...
Абакушина, М. В. +1 more
core +1 more source
Along‐Track Marine Geoid Resolution Enhancement With SWOT
Earth and Space Science, Volume 12, Issue 3, March 2025.Abstract Satellite altimetry has been the major data source for marine geoid determination·and gravity recovery in recent decades. In general, altimetry‐derived geoid and gravity anomaly models are typically released with a 1' × 1' gridding interval. However, their actual spatial resolution is far lower than the nominal ∼2 km level.
Xu Chen +3 more
wiley +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
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
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
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
Wavelet-based directional analysis of the gravity field: evidence for large-scale undulations
, 2012 International audienceIn the eighties, the analysis of satellite altimetry data leads to the major discovery of gravity lineations in the oceans, with wavelengths between 200 and 1400 km.
Davaille, A +5 more
core +3 more sources