BRAINE-LE-COMTE (BE)
Quarry blast8 December 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 11:32:072022-12-08
- UTC
- 10:32:072022-12-08
Main parameters
| Date and time | 2022-12-08 10:32:07 UTC 2022-12-08 11:32:07 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.636° N, 4.171° E Uncertainty ± 0.6 km |
| Event ID | ROB 17985 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-12-14 16:16:04 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
- 5
- Epicentral distance
- 5.1 – 67.3km
- Mean velocity, P wave
- 6.3km/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: 5 measurements, root-mean-square deviation 0.18 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 | |||||
| RQRRonquières | 5.1 | 131 | 10:32:09.30+1.73 s | – | – |
| SKQSteenkerque | 6.6 | 283 | 10:32:09.03+1.46 s | 10:32:09.78+2.21 s | 0.75 |
| UCCBUccle | 22.3 | 37 | 10:32:11.62+4.05 s | – | – |
| TGATangissart | 25.1 | 98 | 10:32:12.34+4.77 s | 10:32:15.20+7.63 s | 2.86 |
| DOUDourbes | 67.3 | 153 | 10:32:18.94+11.37 s | – | – |
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