SPRIMONT (BE)
Quarry blast26 April 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 15:48:562022-04-26
- UTC
- 13:48:562022-04-26
Main parameters
| Date and time | 2022-04-26 13:48:56 UTC 2022-04-26 15:48:56 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.485° N, 5.611° E Uncertainty ± 0.6 km |
| Event ID | ROB 16015 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-04-27 11:19:18 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
- 10
- Epicentral distance
- 11.4 – 55.6km
- Mean velocity, P wave
- 6.1km/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: 10 measurements, root-mean-square deviation 0.33 s. S wave: 8 measurements, root-mean-square deviation 0.20 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)9 stations | |||||
| STISart Tilman | 11.4 | 343 | 13:48:58.86+2.19 s | – | – |
| CLAClavier | 23.1 | 252 | 13:49:01.00+4.33 s | 13:49:04.09+7.42 s | 3.09 |
| MEMHMembach | 31.5 | 64 | 13:49:02.97+6.30 s | – | – |
| HOUHouvegnez | 31.6 | 117 | 13:49:02.62+5.95 s | 13:49:06.33+9.66 s | 3.71 |
| MRGMont Rigi | 33.1 | 85 | 13:49:02.73+6.06 s | 13:49:06.78+10.11 s | 4.05 |
| TNLTernell | 38.5 | 73 | 13:49:03.62+6.95 s | 13:49:08.92+12.25 s | 5.30 |
| GESGesves | 38.8 | 254 | 13:49:03.58+6.91 s | 13:49:08.64+11.97 s | 5.06 |
| RCHRochefort | 45.7 | 217 | 13:49:04.04+7.37 s | 13:49:10.93+14.26 s | 6.89 |
| KLBKalborn | 55.6 | 140 | 13:49:06.51+9.84 s | 13:49:13.32+16.65 s | 6.81 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 38.5 | 36 | 13:49:03.95+7.28 s | 13:49:08.53+11.86 s | 4.58 |