WELLIN (BE)
Quarry blast21 November 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 14:57:152022-11-21
- UTC
- 13:57:152022-11-21
Main parameters
| Date and time | 2022-11-21 13:57:15 UTC 2022-11-21 14:57:15 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.085° N, 5.125° E Uncertainty ± 0.4 km |
| Event ID | ROB 17795 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 15:04:11 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
- 6
- Epicentral distance
- 10.6 – 88.4km
- Mean velocity, P wave
- 6.3km/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: 6 measurements, root-mean-square deviation 0.10 s. S wave: 4 measurements, root-mean-square deviation 0.15 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)6 stations | |||||
| RCHRochefort | 10.6 | 43 | 13:57:18.20+2.38 s | 13:57:19.75+3.93 s | 1.55 |
| GESGesves | 33.4 | 355 | 13:57:21.80+5.98 s | 13:57:25.93+10.11 s | 4.13 |
| MRDMaredsous | 35.1 | 313 | 13:57:22.34+6.52 s | 13:57:26.80+10.98 s | 4.46 |
| DOUDourbes | 38.0 | 272 | 13:57:22.55+6.73 s | 13:57:27.40+11.58 s | 4.85 |
| STISart Tilman | 63.6 | 29 | 13:57:26.58+10.76 s | – | – |
| EBNEben-Emael | 88.4 | 26 | 13:57:30.67+14.85 s | – | – |