Results 161 to 170 of about 1,527 (198)

Regional Geoid Undulations from CHAMP, Represented by Locally Supported Basis Functions

2005
Regional geoid undulations are determined from CHAMP data using various locally supported basis functions to assess their respective efficiency, accuracy and multi-resolution representation properties. These functions include (biharmonic) B-spline tensor wavelets (with or without compression), multiquadrics (with or without flexible centering and ...
Rainer Mautzl, Burkhard Schaffrin, C. K. Shum, Shin-Chan Han   +3 more
openaire   +1 more source

Geoid undulation from GPS heighting /

1998
Thesis (MAppSc)--University of South Australia ...
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Modifying Stokes' function to reduce the error of geoid undulation computations

Journal of Geophysical Research: Solid Earth, 1981
A comparison is made of the errors in determining the geoid undulation according to the conventional Molodenskii truncation theory and its modifications as suggested by Molodenskii (1958) and Meissl (1971). The undulation is assumed to be computed from gravity anomalies in a spherical cap and a finite set of harmonic potential coefficients (e.g., GEM 9
openaire   +1 more source

The determination of geoid undulations and gravity anomalies from SEASAT altimeter data

Journal of Geophysical Research: Oceans, 1983
The global SEASAT altimeter data set has been edited and adjusted using a crossing arc procedure fixing one long arc to provide control. In doing this a set of 168 master arcs were formed from repeat and near repeat arcs. The adjustment, carried out by D. Rowlands, was done in a global net, and four regional areas.
openaire   +1 more source

General Scheme for the Computation of Regional Geoid Undulations Using Spherical Wavelets

2002
Usually the geoid undulations are modelled by means of an expansion in terms of spherical harmonics. One of the most important disadvantages of this representation is the fact that local changes of the geoid affect all coefficients. Thus, an appropriate model of the geoid undulations may consist of an expansion in terms of spherical harmonics for the ...
M. Schmidt, W. Martínez, J. Florez
openaire   +1 more source

Ellipsoidal corrections for geoid undulation computations using gravity anomalies in a cap

Journal of Geophysical Research: Solid Earth, 1981
Ellipsoidal correction terms have been derived for geoid undulation computations when the Stokes equation using gravity anomalies in a cap is combined with potential coefficient information. The correction terms are long wavelength and depend on the cap size in which its gravity anomalies are given.
openaire   +1 more source

Gravity recovery from SWOT altimetry using geoid height and geoid gradient

Remote Sensing of Environment, 2021
Cheinway Hwang, Ole Baltazar Andersen
exaly  

Terrain effects on geoid undulation computations

manuscripta geodaetica, 1990
Yan Ming Wang, Richard H. Rapp
openaire   +1 more source

The Continental Undulations of the Geoid

The Geographical Journal, 1935
J. de G. H., R. A. Hirvonen
openaire   +1 more source

On the gravimetric undulations of the geoid and the deflections of the vertical

Geofisica pura e applicata, 1958
The author mentions the aims of the World-wide gravity project he established in the Ohio State University in Columbus, in 1950. He outlines the practical procedure of the gravimetric computations of the undulationsN and the vertical deflection components ξ and η and emphasizes that only by the global international cooperation and additional gravity ...
openaire   +1 more source