BRAINE-LE-COMTE (BE)
Quarry blast1 December 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 14:14:152022-12-01
- UTC
- 13:14:152022-12-01
Main parameters
| Date and time | 2022-12-01 13:14:15 UTC 2022-12-01 14:14:15 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.620° N, 4.141° E Uncertainty ± 2.9 km |
| Event ID | ROB 17930 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-12-02 10:00:09 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
- 6
- Epicentral distance
- 5.4 – 56.9km
- Mean velocity, P wave
- 5.8km/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: 6 measurements, root-mean-square deviation 0.37 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)6 stations | |||||
| SKQSteenkerque | 5.4 | 307 | 13:14:16.41+0.88 s | 13:14:17.67+2.14 s | 1.26 |
| RQRRonquières | 6.2 | 105 | 13:14:17.10+1.57 s | – | – |
| BRQBracquegnies | 15.5 | 181 | 13:14:17.54+2.01 s | – | – |
| SNFSeneffe | 15.8 | 140 | 13:14:18.06+2.53 s | 13:14:21.12+5.59 s | 3.06 |
| TGATangissart | 27.1 | 93 | 13:14:20.51+4.98 s | – | – |
| MRDMaredsous | 56.9 | 128 | 13:14:25.29+9.76 s | – | – |
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