Table 2 Criteria and location uncertainty corresponding to the quality rating (Q) of the hypocentral parameters in the event list in Table 1
From: Earthquakes in Switzerland and surrounding regions during 2017 and 2018
Rating | Criteria | Uncertainty | ||
|---|---|---|---|---|
Q | GAP (degrees) | DM (km) | H (km) | Z (km) |
A | ≤ 180 | ≤ 1.5 × Z | ≤ 2 | ≤ 3 |
B | ≤ 200 | ≤ 25 | ≤ 5 | ≤ 10 |
C | ≤ 270 | ≤ 60 | ≤ 10 | > 10 |
D | > 270 | > 60 | > 10 | > 10 |