SEISMIC ACTIVITY IN THE SNOWY MOUNTAINS REGION AND ITS RELATIONSHIP TO GEOLOGICAL STRUCTURES
Table II. Estimation of focal depth from isoseismals
| Earthquake | Isoseismal j | Radius Rj | Estimated Depth |
|---|---|---|---|
| M.M. Scale | Km | Km | |
| Rock Flat (1.9.58) |
4⋅5 | (5) | (7) |
| 3⋅5 | 18 | 11 | |
| 2⋅5 | 28 | 10 | |
| 1⋅5 | 36 | 5 | |
| Berridale (18.5.59) |
6⋅0 | 14 | 12 |
| 5⋅0 | 29 | 14 | |
| 4⋅0 | 51 | 15 | |
| 3⋅0 | 141 | 27 | |
| 2⋅0 | 210 | 25 |