REBECQ (BE)
Quarry blast21 June 2022
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 13:00:342022-06-21
- UTC
- 11:00:342022-06-21
Main parameters
| Date and time | 2022-06-21 11:00:34 UTC 2022-06-21 13:00:34 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.667° N, 4.116° E Uncertainty ± 3.3 km |
| Event ID | ROB 16440 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-23 10:44:47 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
- 3.3 – 97.4km
- Mean velocity, P wave
- 5.9km/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 0.78 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 | |||||
| SKQSteenkerque | 3.3 | 231 | 11:00:36.18+1.97 s | – | – |
| LESLessines | 19.9 | 284 | 11:00:37.01+2.80 s | – | – |
| BRQBracquegnies | 20.8 | 176 | 11:00:37.42+3.21 s | – | – |
| SNFSeneffe | 21.1 | 146 | 11:00:38.64+4.43 s | – | – |
| DOUDourbes | 72.2 | 152 | 11:00:46.17+11.96 s | 11:00:56.52+22.31 s | 10.35 |
| GESGesves | 75.7 | 114 | 11:00:48.50+14.29 s | – | – |
| RCHRochefort | 97.4 | 125 | 11:00:51.13+16.92 s | 11:01:01.99+27.78 s | 10.86 |
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