REBECQ (BE)
Quarry blast27 April 2021
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 11:03:362021-04-27
- UTC
- 09:03:362021-04-27
Main parameters
| Date and time | 2021-04-27 09:03:36 UTC 2021-04-27 11:03:36 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.663° N, 4.168° E Uncertainty ± 3.5 km |
| Event ID | ROB 13295 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-04-30 16:02:41 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
- 6.4 – 25.8km
- Mean velocity, P wave
- 5.6km/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 0.13 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 | 6.4 | 256 | 09:03:38.00+1.32 s | 09:03:38.62+1.94 s | 0.62 |
| RQRRonquières | 7.5 | 147 | 09:03:38.38+1.70 s | – | – |
| SNFSeneffe | 18.8 | 154 | 09:03:40.52+3.84 s | – | – |
| UCCBUccle | 20.2 | 42 | 09:03:40.65+3.97 s | 09:03:43.10+6.42 s | 2.45 |
| TGATangissart | 25.8 | 104 | 09:03:41.43+4.75 s | 09:03:44.23+7.55 s | 2.80 |
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