论文信息 - The density difference and generalized programs for two- and three-dimensional gravity modeling

The density difference and generalized programs for two- and three-dimensional gravity modeling

Abstract Computer programs developed to model flat-topped bodies cannot accommodate models with a flat bottom, without a modification in the program. The concept of density difference is introduced and used to construct computer programs that can model gravity anomalies of any body—flat topped, flat bottomed, or undulating. The density difference is the density of the material lying below the interface minus the density of the material above. The suggested schemes determine the initial depths to the interface based on the Bouguer slab formula and improve them iteratively based on the differences between the observed and calculated anomalies. Two generalized computer programs in FORTRAN 77 for modeling two- and three-dimensional structures are presented.

[1] M. Bott. The use of Rapid Digital Computing Methods for Direct Gravity Interpretation of Sedimentary Basins , 1960 .

[2] I. R. Qureshi,et al. Two-Dimensional Mass Distributions from Gravity Anomalies: a Computer METHOD* , 1971 .

[3] Lindrith Cordell,et al. Iterative three-dimensional solution of gravity anomaly data using a digital computer , 1968 .

[4] M. Landisman,et al. Rapid gravity computations for two‐dimensional bodies with application to the Mendocino submarine fracture zone , 1959 .

[5] I. V. R. Murthy,et al. Two-FORTRAN 77 function subprograms to calculate gravity anomalies of bodies of finite and infinite strike length with the density contrast differing with depth , 1989 .