FERNELMONT (BE)
Quarry blast8 April 2022
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:27:452022-04-08
- UTC
- 12:27:452022-04-08
Main parameters
| Date and time | 2022-04-08 12:27:45 UTC 2022-04-08 14:27:45 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.518° N, 4.981° E Uncertainty ± 0.8 km |
| Event ID | ROB 15885 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-04-09 11:59:18 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
- 16.6 – 92.8km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.5km/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 0.22 s. S wave: 8 measurements, root-mean-square deviation 0.33 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 | |||||
| GESGesves | 16.6 | 153 | 12:27:47.86+2.76 s | 12:27:50.08+4.98 s | 2.22 |
| CLAClavier | 25.3 | 116 | 12:27:49.98+4.88 s | 12:27:53.40+8.30 s | 3.42 |
| MRDMaredsous | 28.4 | 212 | 12:27:50.41+5.31 s | 12:27:53.74+8.64 s | 3.33 |
| TGATangissart | 33.9 | 287 | 12:27:51.45+6.35 s | 12:27:55.26+10.16 s | 3.81 |
| RCHRochefort | 44.0 | 156 | 12:27:53.15+8.05 s | 12:27:58.55+13.45 s | 5.40 |
| SNFSeneffe | 49.4 | 269 | 12:27:53.99+8.89 s | 12:27:59.44+14.34 s | 5.45 |
| DOUDourbes | 54.5 | 210 | 12:27:55.01+9.91 s | – | – |
| MEMHMembach | 73.6 | 82 | 12:27:58.19+13.09 s | – | – |
| KLBKalborn | 92.8 | 120 | 12:28:01.93+16.83 s | 12:28:11.60+26.50 s | 9.67 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 72.6 | 67 | 12:27:58.15+13.05 s | 12:28:05.94+20.84 s | 7.79 |