WANZE (BE)
Quarry blast25 February 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 13:37:542022-02-25
- UTC
- 12:37:542022-02-25
Main parameters
| Date and time | 2022-02-25 12:37:54 UTC 2022-02-25 13:37:54 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.551° N, 5.210° E Uncertainty ± 1.9 km |
| Event ID | ROB 15520 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-02-25 18:38:05 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
- 16.0 – 81.3km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.3km/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 0.39 s. S wave: 5 measurements, root-mean-square deviation 0.43 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 | |||||
| CLAClavier | 16.0 | 156 | 12:37:57.91+3.31 s | 12:37:59.22+4.62 s | 1.31 |
| GESGesves | 20.4 | 205 | 12:37:58.58+3.98 s | 12:38:00.11+5.51 s | 1.53 |
| MRDMaredsous | 41.9 | 229 | 12:38:02.00+7.40 s | 12:38:07.53+12.93 s | 5.53 |
| RCHRochefort | 44.0 | 178 | 12:38:03.06+8.46 s | 12:38:07.45+12.85 s | 4.39 |
| DOUDourbes | 67.0 | 221 | 12:38:05.97+11.37 s | 12:38:15.11+20.51 s | 9.14 |
| KLBKalborn | 81.3 | 128 | 12:38:08.99+14.39 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 56.3 | 65 | 12:38:04.15+9.55 s | – | – |