REBECQ (BE)
Quarry blast8 September 2022
- Magnitude
- 0.9ML
- Depth
- –
- Belgian time
- 11:18:572022-09-08
- UTC
- 09:18:572022-09-08
Main parameters
| Date and time | 2022-09-08 09:18:57 UTC 2022-09-08 11:18:57 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.670° N, 4.166° E Uncertainty ± 1.3 km |
| Event ID | ROB 17065 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-09-08 12:01:07 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
- 5
- Epicentral distance
- 6.5 – 26.2km
- Mean velocity, P wave
- 5.6km/s
- Mean velocity, S wave
- 3.4km/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: 5 measurements, root-mean-square deviation 0.15 s. S wave: 4 measurements, root-mean-square deviation 0.28 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)5 stations | |||||
| SKQSteenkerque | 6.5 | 249 | 09:18:59.08+1.44 s | 09:18:59.68+2.04 s | 0.60 |
| RQRRonquières | 8.3 | 150 | 09:18:59.45+1.81 s | – | – |
| SNFSeneffe | 19.6 | 155 | 09:19:01.59+3.95 s | 09:19:04.13+6.49 s | 2.54 |
| UCCBUccle | 19.7 | 44 | 09:19:01.72+4.08 s | 09:19:03.78+6.14 s | 2.06 |
| TGATangissart | 26.2 | 106 | 09:19:02.46+4.82 s | 09:19:05.36+7.72 s | 2.90 |