Results 261 to 270 of about 14,203 (319)
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Reviews of Geophysics, 1979
Significant improvements in the determination of the earth's potential have been achieved during the past four years. Radar altimetry data has provided a detailed geoid over most of the ocean surface while improvements and extensions of laser tracking networks and computer programs permitted increases in the accuracy and detail of the mathematical ...
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Significant improvements in the determination of the earth's potential have been achieved during the past four years. Radar altimetry data has provided a detailed geoid over most of the ocean surface while improvements and extensions of laser tracking networks and computer programs permitted increases in the accuracy and detail of the mathematical ...
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Reviews of Geophysics, 1975
In the past 4 years the determination of the gravitational field of the earth has taken evolutionary steps. The main emphasis has been in the determination of potential coefficients. The Standard Earth (SE) II solution [Gaposchkin and Lambeck, 1971] was updated to the SE III solution [Gaposchkin, 1973] by the addition of new satellite and terrestrial ...
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In the past 4 years the determination of the gravitational field of the earth has taken evolutionary steps. The main emphasis has been in the determination of potential coefficients. The Standard Earth (SE) II solution [Gaposchkin and Lambeck, 1971] was updated to the SE III solution [Gaposchkin, 1973] by the addition of new satellite and terrestrial ...
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Survey Review, 1963
Abstract Some geodetic methods are geometrical, some are physical, and others have something of both these qualities. In recent years there has been a tendency to mark this distinction more clearly, to the benefit of geodetic science in general.
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Abstract Some geodetic methods are geometrical, some are physical, and others have something of both these qualities. In recent years there has been a tendency to mark this distinction more clearly, to the benefit of geodetic science in general.
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Viscoelastic Deformations and Temporal Variations in the Geopotential [PDF]
, 2013 Abstract. We giveanoverviewof thetime-dependent changeisnthegeopotenticaalusedbypresent-dagylacial activitiesandthecurrendtisequilibriuomftheAntarcticice sheet.Thctime-dependcgnrtavitycoefficicntasrecalculated fromcalculatintgheuansicnvtiscoelasfricesponscins thc manticfor bothMaxwcllandBurgersb'odytheology.Wc havcfoundthatnon-axisymmcuc ...
SABADINI, R, YUEN, DA, GASPERINI, P
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Geopotential from Space Techniques
Celestial Mechanics & Dynamical Astronomy, 1993The monitoring of the perturbed motion of artificial satellites since the 1960’s has provided a valuable resource for improved activities in geodesy.Theseobservations and the improved geodetic techniques they fostered have provided an unparalleled means for studying both the gravity field and the Earth’s shape. In this paper, we will review the various
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Earth, Moon, and Planets, 1994
The actual accuracy of the geopotential value on the geoid computed from satellite altimetry recently asW0 = (62 636 857.5 ± 1.0) m2 s−2 makes it possible to adopt this quantity as geopotential models testing (GMT) value. However, GMT network should be established consisting of points situated near the gauge stations and of other points at small sea ...
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The actual accuracy of the geopotential value on the geoid computed from satellite altimetry recently asW0 = (62 636 857.5 ± 1.0) m2 s−2 makes it possible to adopt this quantity as geopotential models testing (GMT) value. However, GMT network should be established consisting of points situated near the gauge stations and of other points at small sea ...
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Rotational and Divergent Geopotential Components
Journal of the Atmospheric Sciences, 1988Abstract It has been traditional in meteorology to divide the velocity field up into rotational and divergent components, but not the geopotential field. Yet any balance condition, such as the geostrophic relation or linear balance equation, is a diagnostic relation which states that not only can the balanced velocity field be computed from the ...
Shyh-Chin Chen, Kevin E. Trenberth
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Solutions of Geopotential Perturbations
2013After an introduction, the principle of the derivations of the geopotential perturbations on an Earth satellite will be discussed first. Then the disturbed basic Lagrangian equations of satellite motion and the simplifying algorithms are outlined. The orbit solutions disturbed by the geopotential are derived up to 8 × 8 orders and degrees, which are ...
Jia Xu, Guochang Xu
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The geopotential in nonsingular orbital elements
Celestial Mechanics, 1977Singularities are eliminated from the geopotential and its partial derivatives for zero eccentricity and inclination, and an expression for the geopotential expansion based entirely on nonsingular orbital elements is developed. The argument relies on the treatments of the geopotential function given by Izsak (1964), Allan (1965) and Kaula (1966); the ...
S. S. Dallas, Paul Nacozy
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EGM96 Geopotential Model and Geophysics
5th International Congress of the Brazilian Geophysical Society, 1997Geopotential models have been rapidly developed in the last twenty years. They are now very accurate and can be useful in many fields. This paper aims to synthesize the evolution of the models and exemplify one of its possible use in geophysics.
S. Mello, D. Blitzkow
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