REBECQ (BE)
Quarry blast2 March 2021
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 11:02:232021-03-02
- UTC
- 10:02:232021-03-02
Main parameters
| Date and time | 2021-03-02 10:02:23 UTC 2021-03-02 11:02:23 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.664° N, 4.160° E Uncertainty ± 0.6 km |
| Event ID | ROB 12650 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-03-03 16:12:01 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 – 20.4km
- 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 0.03 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 | 253 | 10:02:24.54+1.28 s | 10:02:25.24+1.98 s | 0.70 |
| RQRRonquières | 7.9 | 145 | 10:02:24.84+1.58 s | 10:02:25.93+2.67 s | 1.09 |
| SNFSeneffe | 19.2 | 153 | 10:02:26.97+3.71 s | – | – |
| UCCBUccle | 20.4 | 44 | 10:02:27.19+3.93 s | 10:02:29.70+6.44 s | 2.51 |
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