FERNELMONT (BE)
Quarry blast1 March 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:15:032022-03-01
- UTC
- 13:15:032022-03-01
Main parameters
| Date and time | 2022-03-01 13:15:03 UTC 2022-03-01 14:15:03 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.514° N, 4.976° E Uncertainty ± 0.6 km |
| Event ID | ROB 15575 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-03-08 09:32:58 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
- 25.5 – 93.0km
- Mean velocity, P wave
- 5.8km/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: 7 measurements, root-mean-square deviation 0.24 s. S wave: 5 measurements, root-mean-square deviation 0.26 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 | 25.5 | 114 | 13:15:07.69+4.55 s | 13:15:10.99+7.85 s | 3.30 |
| MRDMaredsous | 27.8 | 212 | 13:15:08.43+5.29 s | 13:15:12.11+8.97 s | 3.68 |
| TGATangissart | 33.7 | 288 | 13:15:09.12+5.98 s | 13:15:13.52+10.38 s | 4.40 |
| RCHRochefort | 43.8 | 156 | 13:15:10.87+7.73 s | 13:15:16.42+13.28 s | 5.55 |
| DOUDourbes | 53.9 | 210 | 13:15:12.86+9.72 s | 13:15:19.01+15.87 s | 6.15 |
| KLBKalborn | 93.0 | 119 | 13:15:19.97+16.83 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 73.1 | 67 | 13:15:15.79+12.65 s | – | – |