Table 3 Search range and step, optimal value, and the minimum f value for each parameter
Parameter | Search range | Step | Optimal value for each model | ||
|---|---|---|---|---|---|
FEM | Mogi | Dislocation | |||
E–W location | − 500 to 500 m | 50 m | 0 ± 50 m | − 50 ± 50 m | − 50 ± 50 m |
N–S location | − 500 to 500 m | 50 m | 0 ± 50 m | 0 ± 50 m | 0 ± 0 m |
Depth | 500 m asl–500 m bsl | 50 m | 400 ± 0 m asl | 450 ± 50 m asl | 500 ± 0 m asl |
Equatorial radius | 50–200 m | 50 m | 50 ± 0 m | – | – |
Polar radius | 50–200 m | 50 m | 50 ± 0 m | – | – |
Internal pressure change | + 1 to + 500 MPa | 1 MPa | + 361 ± 133 MPa | – | – |
Dip | 0°–90° | 1° | – | – | 74 ± 15° |
Strike | 0°–359° | 1° | – | – | 165 ± 12° |
Length | 50–500 m | 50 m | – | – | 150 ± 50 m |
Width | 50–500 m | 50 m | – | – | 150 + 250/− 50 m |
Opening | 0.01–5.00 m | 0.01 m | – | – | 1.86 ± 0.72 m |
Volume change | + 100 to + 50,000 m3 | 100 m3 | (+ 31,700 m3) | + 25,400 ± 8800 m3 | (+ 41,850 m3) |
The minimum f value | – | – | 87.2 | 99.5 | 78.0 |