Table 3.
The depths obtained through higher-order horizontal derivative analyses for Arizona (USA) vertical magnetic anomaly
| Graticule spacing (s) | Second order derivative | Third order derivative | Fourth order derivative | |||
|---|---|---|---|---|---|---|
| Estimated depth (m) | Iteration number | Estimated depth (m) | Iteration number | Estimated depth (m) | Iteration number | |
| 2 | 64.12 | 30 | 58.30 | 20 | 60.54 | 23 |
| 3 | 65.20 | 22 | 56.26 | 14 | 61.62 | 19 |
| 4 | 69.39 | 19 | 61.43 | 13 | 68.89 | 17 |
| 5 | 72.78 | 16 | 68.19 | 12 | 74.35 | 16 |
| Average depth (m) | 67.87 ± 3.99 | 61.05 ± 5.22 | 66.35 ± 6.5 | |||