SOIGNIES (BE)
Quarry blast9 September 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:07:032022-09-09
- UTC
- 12:07:032022-09-09
Main parameters
| Date and time | 2022-09-09 12:07:03 UTC 2022-09-09 14:07:03 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.577° N, 4.083° E Uncertainty ± 1.0 km |
| Event ID | ROB 17085 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-09-09 14:29:31 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
- 9
- Epicentral distance
- 8.0 – 141.4km
- Mean velocity, P wave
- 6.0km/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 0.17 s. S wave: 4 measurements, root-mean-square deviation 0.22 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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 | 8.0 | 358 | 12:07:05.10+1.54 s | 12:07:06.44+2.88 s | 1.34 |
| RQRRonquières | 10.6 | 72 | 12:07:05.79+2.23 s | – | – |
| BRQBracquegnies | 11.3 | 161 | 12:07:05.55+1.99 s | – | – |
| SNFSeneffe | 16.0 | 117 | 12:07:06.85+3.29 s | 12:07:09.12+5.56 s | 2.27 |
| TGATangissart | 31.2 | 84 | 12:07:09.19+5.63 s | 12:07:13.11+9.55 s | 3.92 |
| UCCBUccle | 31.4 | 39 | 12:07:09.15+5.59 s | 12:07:13.16+9.60 s | 4.01 |
| MRDMaredsous | 57.5 | 122 | 12:07:13.57+10.01 s | – | – |
| MRGMont Rigi | 141.4 | 92 | 12:07:27.38+23.82 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 132.3 | 80 | 12:07:27.14+23.58 s | – | – |