PHILIPPEVILLE (BE)
Quarry blast6 December 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 16:21:052022-12-06
- UTC
- 15:21:052022-12-06
Main parameters
| Date and time | 2022-12-06 15:21:05 UTC 2022-12-06 16:21:05 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.221° N, 4.512° E Uncertainty ± 3.9 km |
| Event ID | ROB 17975 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-12-14 16:08:27 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
- 15.2 – 117.5km
- 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: 4 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)3 stations | |||||
| DOUDourbes | 15.2 | 157 | 15:21:08.82+2.91 s | 15:21:10.99+5.08 s | 2.17 |
| MRDMaredsous | 20.3 | 64 | 15:21:09.26+3.35 s | 15:21:12.29+6.38 s | 3.03 |
| RCHRochefort | 51.6 | 98 | 15:21:15.08+9.17 s | 15:21:21.73+15.82 s | 6.65 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 117.5 | 58 | 15:21:26.28+20.37 s | – | – |
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