SPRIMONT (BE)
Quarry blast22 August 2022
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 16:01:482022-08-22
- UTC
- 14:01:482022-08-22
Main parameters
| Date and time | 2022-08-22 14:01:48 UTC 2022-08-22 16:01:48 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.482° N, 5.611° E Uncertainty ± 0.2 km |
| Event ID | ROB 16915 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-08-26 14:59:29 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
- 11.7 – 38.7km
- Mean velocity, P wave
- 5.8km/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 0.17 s. S wave: 5 measurements, root-mean-square deviation 0.11 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 | |||||
| STISart Tilman | 11.7 | 343 | 14:01:50.53+2.14 s | – | – |
| LCHLa Chartreuse | 17.5 | 357 | 14:01:51.69+3.30 s | 14:01:54.21+5.82 s | 2.52 |
| CLAClavier | 23.1 | 252 | 14:01:52.64+4.25 s | 14:01:55.81+7.42 s | 3.17 |
| HOUHouvegnez | 31.4 | 117 | 14:01:54.06+5.67 s | – | – |
| MEMHMembach | 31.6 | 63 | 14:01:53.94+5.55 s | 14:01:58.24+9.85 s | 4.30 |
| TNLTernell | 38.6 | 72 | 14:01:55.14+6.75 s | 14:02:00.39+12.00 s | 5.25 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 38.7 | 36 | 14:01:55.68+7.29 s | 14:02:00.43+12.04 s | 4.75 |