REBECQ (BE)
Quarry blast10 May 2021
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 10:56:392021-05-10
- UTC
- 08:56:392021-05-10
Main parameters
| Date and time | 2021-05-10 08:56:39 UTC 2021-05-10 10:56:39 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.663° N, 4.165° E Uncertainty ± 0.8 km |
| Event ID | ROB 13360 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-05-10 16:52:02 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
- 6.2 – 26.0km
- 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 0.12 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 | 6.2 | 255 | 08:56:40.63+1.27 s | 08:56:41.45+2.09 s | 0.82 |
| RQRRonquières | 7.6 | 146 | 08:56:40.93+1.57 s | – | – |
| SNFSeneffe | 18.9 | 154 | 08:56:43.03+3.67 s | – | – |
| UCCBUccle | 20.3 | 43 | 08:56:43.31+3.95 s | 08:56:45.82+6.46 s | 2.51 |
| TGATangissart | 26.0 | 104 | 08:56:44.01+4.65 s | 08:56:46.91+7.55 s | 2.90 |
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