REBECQ (BE)
Quarry blast7 March 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 13:49:592022-03-07
- UTC
- 12:49:592022-03-07
Main parameters
| Date and time | 2022-03-07 12:49:59 UTC 2022-03-07 13:49:59 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.681° N, 4.132° E Uncertainty ± 3.5 km |
| Event ID | ROB 15550 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-03-08 09:13:49 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
- 4
- Epicentral distance
- 5.1 – 28.8km
- Mean velocity, P wave
- 6.0km/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: 4 measurements, root-mean-square deviation 0.37 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)4 stations | |||||
| SKQSteenkerque | 5.1 | 226 | 12:50:00.86+1.14 s | 12:50:01.38+1.66 s | 0.52 |
| RQRRonquières | 10.6 | 142 | 12:50:02.17+2.45 s | – | – |
| SNFSeneffe | 21.7 | 150 | 12:50:03.15+3.43 s | 12:50:07.12+7.40 s | 3.97 |
| TGATangissart | 28.8 | 107 | 12:50:05.24+5.52 s | 12:50:08.42+8.70 s | 3.18 |
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