WANZE (BE)
Quarry blast4 February 2022
- Magnitude
- 0.8ML
- Depth
- –
- Belgian time
- 13:50:572022-02-04
- UTC
- 12:50:572022-02-04
Main parameters
| Date and time | 2022-02-04 12:50:57 UTC 2022-02-04 13:50:57 Belgian time |
|---|---|
| Magnitude | ML 0.8 |
| Epicentral coordinates | 50.543° N, 5.210° E Uncertainty ± 1.6 km |
| Event ID | ROB 15390 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-02-07 09:26:50 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
- 15.3 – 56.7km
- Mean velocity, P wave
- 6.1km/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 0.14 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)5 stations | |||||
| CLAClavier | 15.3 | 155 | 12:51:00.70+2.91 s | 12:51:02.95+5.16 s | 2.25 |
| GESGesves | 19.6 | 206 | 12:51:01.79+4.00 s | – | – |
| LCHLa Chartreuse | 29.6 | 69 | 12:51:03.05+5.26 s | – | – |
| MRDMaredsous | 41.3 | 230 | 12:51:04.94+7.15 s | – | – |
| EBNEben-Emael | 43.5 | 49 | 12:51:05.56+7.77 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 56.7 | 64 | 12:51:07.60+9.81 s | – | – |
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