ANTOING (BE)
Quarry blast27 October 2022
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 13:01:322022-10-27
- UTC
- 11:01:322022-10-27
Main parameters
| Date and time | 2022-10-27 11:01:32 UTC 2022-10-27 13:01:32 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.542° N, 3.455° E Uncertainty ± 6.0 km |
| Event ID | ROB 17570 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 14:34:32 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
- 7
- Epicentral distance
- 33.3 – 117.2km
- Mean velocity, P wave
- 5.4km/s
- Mean velocity, S wave
- 3.1km/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 0.43 s. S wave: 4 measurements, root-mean-square deviation 0.56 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)7 stations | |||||
| LESLessines | 33.3 | 56 | 11:01:36.14+4.03 s | 11:01:39.63+7.52 s | 3.49 |
| SKQSteenkerque | 45.8 | 75 | 11:01:38.39+6.28 s | – | – |
| BRQBracquegnies | 48.8 | 98 | 11:01:39.42+7.31 s | – | – |
| RQRRonquières | 55.0 | 82 | 11:01:39.63+7.52 s | – | – |
| SNFSeneffe | 58.9 | 93 | 11:01:40.61+8.50 s | 11:01:47.71+15.60 s | 7.10 |
| DOUDourbes | 95.2 | 121 | 11:01:47.71+15.60 s | 11:02:00.59+28.48 s | 12.88 |
| GESGesves | 117.2 | 98 | 11:01:50.76+18.65 s | 11:02:07.13+35.02 s | 16.37 |