SOIGNIES (BE)
Quarry blast27 January 2022
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:33:102022-01-27
- UTC
- 13:33:102022-01-27
Main parameters
| Date and time | 2022-01-27 13:33:10 UTC 2022-01-27 14:33:10 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.584° N, 4.075° E Uncertainty ± 1.6 km |
| Event ID | ROB 15305 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-01-28 13:45:04 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
- 11
- Epicentral distance
- 7.3 – 154.4km
- Mean velocity, P wave
- 5.6km/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 0.17 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)10 stations | |||||
| SKQSteenkerque | 7.3 | 3 | 13:33:12.16+1.33 s | 13:33:13.43+2.60 s | 1.27 |
| RQRRonquières | 10.9 | 77 | 13:33:12.82+1.99 s | – | – |
| BRQBracquegnies | 12.2 | 159 | 13:33:12.78+1.95 s | – | – |
| SNFSeneffe | 16.9 | 119 | 13:33:13.76+2.93 s | 13:33:16.27+5.44 s | 2.51 |
| TGATangissart | 31.7 | 86 | 13:33:16.14+5.31 s | – | – |
| MRDMaredsous | 58.3 | 122 | 13:33:21.16+10.33 s | – | – |
| DOUDourbes | 65.8 | 146 | 13:33:22.68+11.85 s | 13:33:30.95+20.12 s | 8.27 |
| GESGesves | 75.1 | 107 | 13:33:23.88+13.05 s | – | – |
| MRGMont Rigi | 141.9 | 92 | 13:33:35.06+24.23 s | 13:33:52.32+41.49 s | 17.26 |
| KLBKalborn | 154.4 | 110 | 13:33:37.32+26.49 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 132.7 | 81 | 13:33:34.07+23.24 s | 13:33:50.27+39.44 s | 16.20 |