SOIGNIES (BE)
Quarry blast25 October 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:03:082022-10-25
- UTC
- 12:03:082022-10-25
Main parameters
| Date and time | 2022-10-25 12:03:08 UTC 2022-10-25 14:03:08 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.580° N, 4.072° E Uncertainty ± 2.2 km |
| Event ID | ROB 17505 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-10-27 13:07:50 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
- 8
- Epicentral distance
- 7.8 – 65.5km
- Mean velocity, P wave
- 5.7km/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: 8 measurements, root-mean-square deviation 0.25 s. S wave: 4 measurements, root-mean-square deviation 0.40 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)8 stations | |||||
| SKQSteenkerque | 7.8 | 4 | 12:03:09.75+1.33 s | 12:03:11.06+2.64 s | 1.31 |
| RQRRonquières | 11.2 | 75 | 12:03:10.52+2.10 s | – | – |
| BRQBracquegnies | 11.9 | 158 | 12:03:10.53+2.11 s | – | – |
| SNFSeneffe | 16.8 | 117 | 12:03:11.56+3.14 s | 12:03:14.31+5.89 s | 2.75 |
| UCCBUccle | 31.6 | 40 | 12:03:14.58+6.16 s | 12:03:18.47+10.05 s | 3.89 |
| TGATangissart | 32.0 | 85 | 12:03:13.78+5.36 s | 12:03:17.84+9.42 s | 4.06 |
| MRDMaredsous | 58.3 | 122 | 12:03:18.60+10.18 s | – | – |
| DOUDourbes | 65.5 | 145 | 12:03:20.25+11.83 s | – | – |