Table 4 The true values, search space, and inversion results for a single source anomaly using EKI with noise-free and 10% Gaussian noise-contaminated data.
Model parameters | True | Search space | Noise free | Noise contaminated |
|---|---|---|---|---|
\(A~\left( {{\text{~mGal}}.{{\text{m}}^2}{\text{~}}} \right)\) | 500 | 200–700 | 501.41 ± 12.36 | 542.79 ± 75.41 |
z (m) | 25 | 10–50 | 24.99 ± 0.03 | 22.45 ± 0.75 |
\({x_0}\) (m) | -50 | -200–200 | -50.00 ± 0.00 | -49.86 ± 0.06 |
q | 1 | 0.5–1.5 | 0.99 ± 0.00 | 0.92 ± 0.01 |
\(\mu\) | 1 | 0–1 | 0.99 ± 0.01 | 0.80 ± 0.07 |
Minimum objective function (mGal) | 9.67e-06 | 0.40 | ||
The median objective function (mGal) | 2.42e-04 | 0.40 | ||
The interquartile range of the objective function (mGal) | 4.74e-04 | 3.16e-04 | ||
