REBECQ (BE)
Quarry blast2 May 2023
- Magnitude
- 0.8ML
- Depth
- –
- Belgian time
- 14:17:212023-05-02
- UTC
- 12:17:212023-05-02
Main parameters
| Date and time | 2023-05-02 12:17:21 UTC 2023-05-02 14:17:21 Belgian time |
|---|---|
| Magnitude | ML 0.8 |
| Epicentral coordinates | 50.682° N, 4.109° E Uncertainty ± 2.8 km |
| Event ID | ROB 19395 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-05-03 10:56:16 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
- 4.2 – 30.4km
- Mean velocity, P wave
- 5.7km/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: 5 measurements, root-mean-square deviation 0.27 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 | 4.2 | 210 | 12:17:22.29+0.92 s | 12:17:22.74+1.37 s | 0.45 |
| RQRRonquières | 11.8 | 136 | 12:17:23.55+2.18 s | – | – |
| LESLessines | 19.1 | 280 | 12:17:25.00+3.63 s | – | – |
| SNFSeneffe | 22.7 | 147 | 12:17:26.09+4.72 s | – | – |
| TGATangissart | 30.4 | 106 | 12:17:26.64+5.27 s | – | – |
Did you feel an earthquake?The inquiry takes just a few minutes. Every report helps seismologists assess the effects of the earthquake.
Take the inquiry