Results 251 to 260 of about 313,526 (298)
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GEOPHYSICS, 1958
As the co‐author of the paper “Observation of the Vertical Gradient of Gravity in the Field” which appeared in Vol. 21 (1956) of Geophysics, I should like to add some comments.
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As the co‐author of the paper “Observation of the Vertical Gradient of Gravity in the Field” which appeared in Vol. 21 (1956) of Geophysics, I should like to add some comments.
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Journal of the Surveying and Mapping Division, 1964
The vertical gradients of gravity have great significance both in geodesy and in geophysics. In geodesy, in the free air reduction of gravity, the regional gradients should be used, rather than the customary normal gradients. The gravity anomalies, which include the free air reduction, are used in practice to determine geoid undulations, deflections of
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The vertical gradients of gravity have great significance both in geodesy and in geophysics. In geodesy, in the free air reduction of gravity, the regional gradients should be used, rather than the customary normal gradients. The gravity anomalies, which include the free air reduction, are used in practice to determine geoid undulations, deflections of
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Gravity-Gradient Momentum Management
Journal of Spacecraft and Rockets, 1972RBITING space vehicles which use momentum exchange control elements such as control moment gyros (CMGs) and reaction wheels are faced with the problem of possible saturation of such devices. The use of gravity-gradi ent torques for desaturation control would allow the dissipation of accumulated momentum without expending vehicle propellants. This study
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Gravity Gradient Tensor Determined from Vertical Gravity Measurements
61st EAGE Conference and Exhibition, 1999A technique has been developed to determine the gravity gradient tensor from preexisting vertical component of gravity (g,) using Fourier transform techniques.
K. Mickus, J. Hinojosa
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Depth determination from gravity gradients
53rd EAEG Meeting, 1991Estimation of the depth to a buried structure from the horizontal or vertical gravity gradients (Hammer and Anzoleaga, 1975; and Stanley and Green, 1976) has drawn considerable attention. The simplest and most widely used method to determine the depth of a buried structure from gravity gradients is the Xe-rule (Piek et al., 1973).
M. M. Gobashy +2 more
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Gravity gradients from satellite altimetry
Marine Geodesy, 1990Abstract A method for the computation of second derivatives Tuu, Tvv, and Tzz of the disturbance gravity potential from altimetric geoid profiles is proposed. Both the high precision and the data density in profile direction are optimally used when determining the second derivatives Tuu from ascending and Tvv from descending tracks. The differentiation
R. Rummel, R. H. N. Haagmans
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Joint interpretation of gravity and gravity gradient profiles
SEG Technical Program Expanded Abstracts 2001, 2001Measurement of the vertical gravity gradient (gz,z) and the vertical gravity field (gz) along a single profile promises to provide more geological information than is provided by either data set alone. This additional information can be recovered through joint inversion.
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THE AVERAGE HORIZONTAL GRAVITY GRADIENT
GEOPHYSICS, 1962The authors reported experiments of making measurements with the gravity meter at close spacings (Geophysics, 1956, 1958; Journal ASPG, 1960, 1962) for the purpose of obtaining gravity gradients and micro‐gravimetric maps. Since the average horizontal gradient seems to be of some interest for geophysical exploration, a brief theoretical discussion is ...
Stephen Thyssen‐Bornemisza +1 more
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Nonlocal Time-Gradient Gravity
This work is presented only as a theoretical framework, intended to outline the concept of Nonlocal Time-Gradient Gravity (NLTG). The detailed mathematical derivations, rigorous field equations, and quantitative comparisons with observational data are left for future work.Huang, Jianheng +2 more
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Inversion Reconstruction of Gravity Potential Based on Gravity Gradients
Mathematical Geosciences, 2008A new method was developed for the inversion reconstruction of gravity potential. This method offers the possibility to determine the potential function and all of its important derivatives using the common inversion of gravity gradients and the first derivatives of potential. Gravity gradients can be originated from Torsion balance measurements, while
Dobróka, Mihály, Völgyesi, Lajos
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