WELLIN (BE)
Quarry blast5 September 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 15:18:212022-09-05
- UTC
- 13:18:212022-09-05
Main parameters
| Date and time | 2022-09-05 13:18:21 UTC 2022-09-05 15:18:21 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.091° N, 5.103° E Uncertainty ± 2.0 km |
| Event ID | ROB 17020 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-09-07 09:42:48 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
- 4
- Epicentral distance
- 11.4 – 36.3km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.4km/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: 4 measurements, root-mean-square deviation 0.17 s. S wave: 4 measurements, root-mean-square deviation 0.14 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)4 stations | |||||
| RCHRochefort | 11.4 | 51 | 13:18:23.88+2.19 s | 13:18:25.69+4.00 s | 1.81 |
| GESGesves | 32.7 | 358 | 13:18:27.60+5.91 s | 13:18:31.71+10.02 s | 4.11 |
| MRDMaredsous | 33.5 | 315 | 13:18:28.05+6.36 s | 13:18:32.12+10.43 s | 4.07 |
| DOUDourbes | 36.3 | 271 | 13:18:28.20+6.51 s | 13:18:32.67+10.98 s | 4.47 |