DURBUY (BE)
Quarry blast25 April 2022
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 16:02:312022-04-25
- UTC
- 14:02:312022-04-25
Main parameters
| Date and time | 2022-04-25 14:02:31 UTC 2022-04-25 16:02:31 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.366° N, 5.538° E Uncertainty ± 1.0 km |
| Event ID | ROB 15995 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-04-25 17:00:58 Belgian time
Location map
- Epicentre
- Station that recorded the event
Arrival times at the stations
Each station first records the P wave, the fastest, then the S wave. The farther a station is from the epicentre, the later the waves reach it and the wider the gap between the two.
- Stations
- 7
- Epicentral distance
- 17.8 – 73.8km
- Mean velocity, P wave
- 6.2km/s
- Mean velocity, S wave
- 3.5km/s
- P wave
- S wave
- Curve fitted to the measurements
Notes and method
Curves: travel time of a direct wave in a homogeneous medium. The velocity of each wave and an origin-time shift, common to both, are fitted to the measurements by least squares. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 7 measurements, root-mean-square deviation 0.30 s. S wave: 7 measurements, root-mean-square deviation 0.49 s.
Station measurements
P- and S-wave arrivals and ground displacement measured at each station. Click a column heading to change the order.
| km | ° | UTC | UTC | s | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)7 stations | |||||
| CLAClavier | 17.8 | 289 | 14:02:34.62+3.09 s | 14:02:36.74+5.21 s | 2.12 |
| GESGesves | 32.2 | 274 | 14:02:37.86+6.33 s | 14:02:42.10+10.57 s | 4.24 |
| RCHRochefort | 32.3 | 224 | 14:02:37.34+5.81 s | 14:02:41.81+10.28 s | 4.47 |
| HOUHouvegnez | 33.2 | 92 | 14:02:37.52+5.99 s | 14:02:41.61+10.08 s | 4.09 |
| MEMHMembach | 43.0 | 51 | 14:02:39.35+7.82 s | 14:02:44.70+13.17 s | 5.35 |
| KLBKalborn | 50.3 | 126 | 14:02:40.46+8.93 s | 14:02:45.83+14.30 s | 5.37 |
| DOUDourbes | 73.8 | 246 | 14:02:43.75+12.22 s | 14:02:53.71+22.18 s | 9.96 |