USE OF THE SECOND VERTICAL DERIVATIVES OF THE GRAVITY POTENTIAL FOR THE GEOLOGICAL INTERPRETATION OF THE GRAVIMETRIC,
Abstract
The calculation of anomalies of the second vertical derivatives of the gravity potential on the basis of gravity anomaly values on a plane surface is a fairly cumbersome process. It sometimes proves to be even more laborious than the method of local anomaly isolation by means of the averaging of gravimetric charts with the aid of a graticule. (1) On charts of differential g/differential Z isanomalous lines, the anomalies, which are hardly noticeable on gravity isanomaly charts, become distinctly visible. It could be said that a differential g/differential Z chart 'develops' a delta g map while requiring no complementary hypotheses. (2) In contrast to the other methods for the isolation of local anomalies, in calculating differential g/differential Z we obtain entirely realistic physical quantities which may be used for quantitative computations. (3) In contrast to delta g anomalies, which constitute relative quantities, the quantity differential g/differential Z has an absolute value. The differential g/differential Z anomalies manifest themselves with greater sharpness and precision over the shallow-lying anomalous masses than the delta g anomalies. Consequently, they may be used with great success for the calculation of the depth at which the anomalous masses are buried under the assumption that the latter have, for example, a spherical shape. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1959
- Accession Number
- AD0649357
Entities
People
- K. E. Veselov
Organizations
- National Air and Space Intelligence Center