REBECQ (BE)
Quarry blast3 December 2020
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:04:502020-12-03
- UTC
- 13:04:502020-12-03
Main parameters
| Date and time | 2020-12-03 13:04:50 UTC 2020-12-03 14:04:50 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.650° N, 4.149° E Uncertainty ± 2.5 km |
| Event ID | ROB 11465 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-12-03 15:12:59 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
- 7
- Epicentral distance
- 4.9 – 85.7km
- 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: 7 measurements, root-mean-square deviation 0.31 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)7 stations | |||||
| SKQSteenkerque | 4.9 | 268 | 13:04:51.36+0.97 s | 13:04:52.49+2.10 s | 1.13 |
| RQRRonquières | 7.3 | 132 | 13:04:51.93+1.54 s | – | – |
| SNFSeneffe | 18.2 | 148 | 13:04:53.05+2.66 s | – | – |
| LESLessines | 22.7 | 287 | 13:04:54.29+3.90 s | – | – |
| TGATangissart | 26.9 | 101 | 13:04:55.42+5.03 s | – | – |
| DOUDourbes | 69.4 | 153 | 13:05:03.20+12.81 s | 13:05:10.47+20.08 s | 7.27 |
| CLAClavier | 85.7 | 107 | 13:05:05.53+15.14 s | 13:05:12.94+22.55 s | 7.41 |
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