REBECQ (BE)
Quarry blast24 March 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 11:20:322022-03-24
- UTC
- 10:20:322022-03-24
Main parameters
| Date and time | 2022-03-24 10:20:32 UTC 2022-03-24 11:20:32 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.678° N, 4.163° E Uncertainty ± 1.2 km |
| Event ID | ROB 15715 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-03-25 11:00:02 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
- 6.7 – 73.2km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.7km/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 0.13 s. S wave: 4 measurements, root-mean-square deviation 0.47 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 | 6.7 | 241 | 10:20:33.63+1.49 s | 10:20:34.32+2.18 s | 0.69 |
| RQRRonquières | 9.2 | 151 | 10:20:33.99+1.85 s | – | – |
| UCCBUccle | 19.2 | 46 | 10:20:35.68+3.54 s | – | – |
| SNFSeneffe | 20.5 | 155 | 10:20:36.07+3.93 s | 10:20:38.86+6.72 s | 2.79 |
| TGATangissart | 26.7 | 108 | 10:20:37.09+4.95 s | – | – |
| MRDMaredsous | 60.0 | 134 | 10:20:43.06+10.92 s | 10:20:49.30+17.16 s | 6.24 |
| GESGesves | 73.2 | 116 | 10:20:45.18+13.04 s | 10:20:52.01+19.87 s | 6.83 |