REBECQ (BE)
Quarry blast16 March 2023
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 11:14:452023-03-16
- UTC
- 10:14:452023-03-16
Main parameters
| Date and time | 2023-03-16 10:14:45 UTC 2023-03-16 11:14:45 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.669° N, 4.167° E Uncertainty ± 1.7 km |
| Event ID | ROB 19010 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-03-17 12:08:36 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
- 6.5 – 26.1km
- Mean velocity, P wave
- 5.8km/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 0.10 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 | 6.5 | 250 | 10:14:46.97+1.44 s | 10:14:47.68+2.15 s | 0.71 |
| RQRRonquières | 8.1 | 150 | 10:14:47.28+1.75 s | 10:14:48.35+2.82 s | 1.07 |
| SNFSeneffe | 19.5 | 155 | 10:14:49.40+3.87 s | – | – |
| TGATangissart | 26.1 | 106 | 10:14:50.29+4.76 s | 10:14:53.26+7.73 s | 2.97 |
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