Results 261 to 270 of about 313,526 (298)

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.
openaire   +2 more sources

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
openaire   +1 more source

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
openaire   +1 more source

Understanding gravity gradients—a tutorial

The Leading Edge, 2006
The use of gravity gradient (GG) data in exploration is becoming more common. However, interpretation of gravity gradient data is not as easy as the familiar vertical gravity data. For a given source, regardless of its simplicity, gravity gradients often produce a complex pattern of anomalies (single, doublet, triplet, or quadruplet) as compared to the
openaire   +1 more source

Interval gravity‐gradient determination concepts

GEOPHYSICS, 1984
Considerable attention has been directed recently to applications of gravity gradients, e.g., Hammer and Anzoleaga (1975), Stanley and Green (1976), Fajklewicz (1976), Butler (1979), Hammer (1979), Ager and Liard (1982), and Butler et al. (1982). Gravity‐gradient interpretive procedures are developed from properties of true or differential gradients ...
openaire   +1 more source

Measurements of vertical gravity gradient

Bulletin géodésique, 1971
By modem gravity meters it is possible to m_r~_~Jre gravity differences with an accuracy higher than + 0,01 mgal ; even  0.001 regal and better becomes feasible under special conditions. Thus, more reliable information about the vertical gravity gradient is attainable by portable and relatively simple instrumentation.
openaire   +1 more source

Local gravity field modeling using surface gravity gradient measurements

2008
Almost 100,000 surface gravity gradient measurements exist in Hungary over an area of about 45 000 km2. These measurements are a very useful source to study the short wavelength features of the local gravity field, especially below 30 km wavelength. Our aim is to use these existing gravity gradient data in gravity field modeling together with gravity ...
Gy. Tóth, L. Völgyesi
openaire   +1 more source

Comparing gravity and gravity gradient surveys

Geophysical Prospecting, 2010
Gary J. Barnes, John M. Lumley, Phill I. Houghton, Richard J. Gleave   +3 more
openaire   +1 more source

4D Monitoring Using Gravity and Gravity Gradients

63rd EAGE Conference & Exhibition, 2001
E.K. Biegert, S. Witte
openaire   +1 more source

Mechanical properties and deformation mechanisms of gradient nanostructured metals and alloys

Nature Reviews Materials, 2020
Xiaoyan Li, Lei Lu, Jianguo Li
exaly