BRAIVES (BE)
Quarry blast12 December 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 14:03:372022-12-12
- UTC
- 13:03:372022-12-12
Main parameters
| Date and time | 2022-12-12 13:03:37 UTC 2022-12-12 14:03:37 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.589° N, 5.168° E Uncertainty ± 2.0 km |
| Event ID | ROB 18020 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-12-16 11:28:23 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
- 21.1 – 68.4km
- Mean velocity, P wave
- 5.2km/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 0.34 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 | |||||
| CLAClavier | 21.1 | 153 | 13:03:41.62+3.74 s | 13:03:44.80+6.92 s | 3.18 |
| GESGesves | 23.3 | 194 | 13:03:42.06+4.18 s | 13:03:45.16+7.28 s | 3.10 |
| MRDMaredsous | 42.7 | 222 | 13:03:45.13+7.25 s | – | – |
| RCHRochefort | 48.4 | 175 | 13:03:46.80+8.92 s | – | – |
| DOUDourbes | 68.4 | 217 | 13:03:51.00+13.12 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 57.4 | 70 | 13:03:47.98+10.10 s | 13:03:55.12+17.24 s | 7.14 |
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