REBECQ (BE)
Quarry blast13 February 2023
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 14:11:002023-02-13
- UTC
- 13:11:002023-02-13
Main parameters
| Date and time | 2023-02-13 13:11:00 UTC 2023-02-13 14:11:00 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.670° N, 4.167° E Uncertainty ± 3.0 km |
| Event ID | ROB 18690 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-02-22 00:27:17 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
- 6.6 – 23.3km
- Mean velocity, P wave
- 6.3km/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: 4 measurements, root-mean-square deviation 0.34 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 | 6.6 | 249 | 13:11:02.24+1.47 s | 13:11:03.65+2.88 s | 1.41 |
| RQRRonquières | 8.3 | 150 | 13:11:03.06+2.29 s | – | – |
| SNFSeneffe | 19.6 | 155 | 13:11:04.07+3.30 s | 13:11:06.78+6.01 s | 2.71 |
| LESLessines | 23.3 | 281 | 13:11:05.44+4.67 s | 13:11:07.20+6.43 s | 1.76 |
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