REBECQ (BE)
Quarry blast17 November 2020
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 11:08:382020-11-17
- UTC
- 10:08:382020-11-17
Main parameters
| Date and time | 2020-11-17 10:08:38 UTC 2020-11-17 11:08:38 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.662° N, 4.161° E Uncertainty ± 0.4 km |
| Event ID | ROB 11325 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-11-18 08:31:08 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
- 5.9 – 20.6km
- Mean velocity, P wave
- 5.4km/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 0.07 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 | 5.9 | 256 | 10:08:40.03+1.25 s | 10:08:40.81+2.03 s | 0.78 |
| RQRRonquières | 7.7 | 144 | 10:08:40.26+1.48 s | – | – |
| SNFSeneffe | 18.9 | 153 | 10:08:42.49+3.71 s | – | – |
| UCCBUccle | 20.6 | 43 | 10:08:42.61+3.83 s | – | – |
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