Results 261 to 270 of about 48,344 (297)

Inversion Reconstruction of Gravity Potential Based on Gravity Gradients

Mathematical Geosciences, 2008
A 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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Investigation of the vertical gradient of gravity

Eos, Transactions American Geophysical Union, 1938
A precise numerical value for the rate at which the acceleration of gravity changes with height at the surface of the Earth is of great importance in geodesy and applied geophysics. This quantity is called the vertical gradient of gravity or in the present paper simply the vertical gradient.The previous determinations of the value of the vertical ...
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Determination of gravity field from horizontal gradients of gravity

Acta Geodaetica et Geophysica Hungarica, 2007
A method was developed, based on integration of horizontal gradients of gravity Wzx and Wzy to predict gravity at all points of a torsion balance network. Test computations were performed in a typically flat area where both torsion balance and gravimetric measurements are available.
Völgyesi, L., Tóth, G., Csapó, G.
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The normal vertical gradient of gravity

Geophysics, 1983
Abstract Most gravity surveys are conducted to estimate subsurface density contrasts for one application or another. From large-scale crustal studies to relatively small exploration surveys, it is necessary to determine in some way what the normal gravity field should be in order to identify anomalous features.
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Hybrid modelling of gravity, gravity gradients and magnetic fields

Geophysical Prospecting, 2011
ABSTRACTModern geophysical interpretation requires an interdisciplinary approach and software capable of handling multiple geophysical data types such as seismic, full tensor gravity gradiometry, magnetics and magnetotellurics. We use the IGMAS+ (Interactive Gravity and Magnetic Application System) geo‐modelling software that is designed for 3D gravity,
S. Schmidt, C. Plonka, H.‐J. Götze, B. Lahmeyer   +3 more
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Gravity and Gradients of Long Tunnels

Journal of the Surveying and Mapping Division, 1969
EFFECTS OF DISTURBANCES IN THE LOCAL GRAVITY FIELD OF THE EARTH ON GRADIENTS OF LONG TUNNELS IS EXPLORED AND A SIMPLE METHOD OF LOCATING ANY PARTICULAR GEOPOTENTIAL HORIZON IN A PILOT SHAFT SUGGESTED, USING PREY'S FORMULA AND GEOPOTENTIAL OR RELATIVE GEOPOTENTIAL NUMBERS.
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Mean Vertical Gradient of Gravity

2001
The Stokes-Helmert scheme for precise geoid determination requires that Helmert’s gravity anomalies are first evaluated on the earth surface. Subsequently, these anomalies must be continued downward onto the geoid, where they make the boundary values for solving the geodetic boundary value problem. The anomalies are continued downward using the Poisson
P. Vanicek, J. Janák, J. Huang
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Gravity-Gradient Momentum Management

Journal of Spacecraft and Rockets, 1972
RBITING 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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Comparing gravity and gravity gradient surveys

Geophysical Prospecting, 2010
Gary J. Barnes, John M. Lumley, Phill I. Houghton, Richard J. Gleave   +3 more
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The anomalous vertical gradient of gravity

Geophysics, 1970
Abstract The behavior of the earth's vertical gradient of gravity as observed, for example, in tall buildings or boreholes is a matter of considerable geophysical importance. The following elementary considerations may be of interest.
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