Determination of density of the crust and upper mantle from deep seismic sounding and gravimetry, 2
Abstract
A number of purely methodological problems related to deep seismic sounding data and gravimetry are discussed. Computer programs for simple situations in which density does not fluctuate within individual blocks and results of model calculations are given. The purpose of the calculations was to provide a quantitative estimate of the difficulty in retrieval of crosssection density when background components are present in the delta g field and there are rather intense mediumfrequency noises simulating the influence of unknown large density heterogeneities in the upper portion of the crosssection. The most important conclusion is that the use of the rho = f(v) equation cannot support selection of a field with the required accuracy. Consequently, the concept of the presence of fluctuations in density through the cross section must be accepted and gravitational modeling of errors in seismic constructions with simple layers must be undertaken.
 Publication:

USSR Report Earth Sciences JPRS UES
 Pub Date:
 February 1985
 Bibcode:
 1985RpESc.......64R
 Keywords:

 Density (Mass/Volume);
 Earth Crust;
 Earth Mantle;
 Gravimetry;
 Seismology;
 Accuracy;
 Computer Programs;
 Errors;
 Estimates;
 Mathematical Models