Hypoellipse setup
The Hypoellipse earthquake location program was used making the following changes in the test:
TEST |
MEANING |
DEFAULT | SELECTED VALUE |
2 | elevation correction (< 0 no elev cor; = 0 use 1st vel; > 0 use this). | 5 | 0 |
10 | apply distance weighting on this iteration. | 50 | 1 |
11 | xnear = greatest distance with weight of 1.0. | 50 | 50 |
12 | xfar = least distnace with weight of 0.0. | 100 | 150 |
14 | weight out large residuals on this iteration. | 50 | 5 |
15 | give zero weight to residuals > this. | 10 | 3 |
18 | begin jeffreys weighting on this iteration. | 50 | 3 |
19 | use jeffreys weighting only if rms > this. | 0,05 | 0,2 |
21 | maximum number of iterations. | 9 | 30 |
31 | duration magnitude c1, constant. | - 1,15 | -1,8 |
32 | duration magnitude c2, *log((f - p)*fmgc). | 2,0 | 2,41 |