FERNELMONT (BE)
Quarry blast9 February 2022
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:17:562022-02-09
- UTC
- 13:17:562022-02-09
Main parameters
| Date and time | 2022-02-09 13:17:56 UTC 2022-02-09 14:17:56 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.518° N, 4.970° E Uncertainty ± 0.7 km |
| Event ID | ROB 15430 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-02-09 15:33:56 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
- 16.9 – 93.5km
- 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: 10 measurements, root-mean-square deviation 0.21 s. S wave: 5 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 | 16.9 | 151 | 13:17:59.07+3.07 s | 13:18:00.75+4.75 s | 1.68 |
| CLAClavier | 26.0 | 115 | 13:18:00.94+4.94 s | 13:18:04.33+8.33 s | 3.39 |
| MRDMaredsous | 28.0 | 211 | 13:18:01.12+5.12 s | 13:18:04.50+8.50 s | 3.38 |
| TGATangissart | 33.2 | 287 | 13:18:01.57+5.57 s | – | – |
| RCHRochefort | 44.3 | 156 | 13:18:03.83+7.83 s | – | – |
| RQRRonquières | 53.7 | 281 | 13:18:05.18+9.18 s | – | – |
| DOUDourbes | 54.1 | 210 | 13:18:05.87+9.87 s | 13:18:12.39+16.39 s | 6.52 |
| SKQSteenkerque | 64.7 | 283 | 13:18:07.23+11.23 s | – | – |
| KLBKalborn | 93.5 | 119 | 13:18:12.33+16.33 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 73.3 | 68 | 13:18:08.98+12.98 s | 13:18:17.55+21.55 s | 8.57 |