Results 251 to 260 of about 1,040,988 (296)

Gravity-induced gradients in critical mixtures

Optics Communications, 1976
Abstract We report experimental measurement of gravitationally induced concentration gradients in a binary critical mixture. Measurements are performed for the first time with a non-perturbative optical technique upon entire size of the cell. In this way, both the shape of the gradients as a function of the height and their time evolution can be ...
MAISANO, Giacomo, P. MIGLIARDO, F. WANDERLINGH   +2 more
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Vertical Gradient of Gravity

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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Understanding gravity gradients

SEG Technical Program Expanded Abstracts 2005, 2005
Summary: Gravity gradients often produce a complex pattern of anomalies over their sources. To understand this pattern and to aid in the interpretation of measured gravity gradient data, gravity gradient components of the full gradient tensor are computed starting with the basic gravitational potential, followed by computing the first derivatives and ...
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Derivation of the radial gradient of the gravity based on non-full tensor satellite gravity gradients

Journal of Geodynamics, 2013
Abstract The formula for computing the radial gradient of the gravity is derived from the gravity gradients. Since GOCE satellite attitude has such property that one axis in the gradiometer almost has the same direction as the radial one of the earth, the formula can be used to compute the radial derivative of second order of the disturbing potential.
Xiaoyun Wan, Jinhai Yu
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Joint interpretation of gravity and gravity gradient profiles

SEG Technical Program Expanded Abstracts 2001, 2001
Measurement 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, 1962
Abstract A brief theoretical discussion of the average horizontal gravity gradient is presented. Application of the average horizontal gravity gradient in exploration eliminates the disadvantage of all datum planes by unifying the techniques applied in regular gravimeter work and torsion-balance surveys, thereby resulting in better ...
Stephen Thyssen-Bornemisza, W. F. Stackler   +1 more
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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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Gravity is the entropy gradient

The paper presents a new concept of gravity as an entropy gradient of thought forms within the framework of the Acta Universi hypothesis. The mechanism of gravitational effects arising through the creation of spatial inhomogeneities in information density is investigated.
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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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