A Fast Interpretation Method for Inverse Modeling of Residual Gravity Anomalies Caused by Simple Geometry

Table 5

Numerical results of the present method applied to composite gravity anomaly (in mGal), which consists of a local structure (sphere with 𝑧=3 units and 𝐴=750 mGal * units²; profile length = 20 units) and a 2nd-order polynomial of regional structure.

𝑀 (units)	Composite synthetic gravity data inverted			Using graphical separation techniques, remaining residual data inverted			Using analytical method, the remaining residual data inverted
	𝑧; (units)	𝑞	𝐴; (mGal * unit^2)	𝑧; (units)	𝑞	𝐴; (mGal * unit^2)	𝑧; (units)	𝑞	𝐴; (mGal * unit^2)
3.00	2.29	0.73	135.65	2.54	0.99	230.87	3.00	1.50	750.00
4.00	2.04	0.61	109.29	2.42	0.92	195.12	3.00	1.50	750.00
5.00	1.81	0.51	94.78	2.30	0.85	166.59	3.00	1.50	750.00
6.00	1.59	0.43	87.68	2.19	0.78	145.15	3.00	1.50	750.00
7.00	1.40	0.37	85.45	2.08	0.72	129.56	3.00	1.50	750.00
8.00	1.22	0.32	86.62	1.98	0.67	118.34	3.00	1.50	750.00
9.00	1.07	0.27	90.42	1.89	0.63	110.23	3.00	1.50	750.00
10.00	0.94	0.24	96.49	1.81	0.59	104.35	3.00	1.50	750.00
Average (unit)	1.55	0.43	98.30	2.15	0.77	150.02	3.00	1.50	750.00