REBECQ (BE)
Quarry blast1 September 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 10:51:502022-09-01
- UTC
- 08:51:502022-09-01
Main parameters
| Date and time | 2022-09-01 08:51:50 UTC 2022-09-01 10:51:50 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.660° N, 4.165° E Uncertainty ± 1.3 km |
| Event ID | ROB 17055 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-09-07 09:48:41 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
- 6
- Epicentral distance
- 6.2 – 69.9km
- Mean velocity, P wave
- 5.5km/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: 6 measurements, root-mean-square deviation 0.14 s. S wave: 4 measurements, root-mean-square deviation 0.44 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)6 stations | |||||
| SKQSteenkerque | 6.2 | 258 | 08:51:51.89+1.18 s | 08:51:52.72+2.01 s | 0.83 |
| RQRRonquières | 7.4 | 145 | 08:51:52.17+1.46 s | – | – |
| SNFSeneffe | 18.6 | 153 | 08:51:54.34+3.63 s | 08:51:57.06+6.35 s | 2.72 |
| UCCBUccle | 20.5 | 42 | 08:51:54.57+3.86 s | 08:51:57.46+6.75 s | 2.89 |
| TGATangissart | 26.0 | 104 | 08:51:55.27+4.56 s | 08:51:58.18+7.47 s | 2.91 |
| DOUDourbes | 69.9 | 154 | 08:52:03.72+13.01 s | – | – |