Skip to main content

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
  1. GAP  largest angle between epicentre and two adjacent stations, DM minimum epicentral distance, H horizontal location, Z focal depth