DINANT (BE)
Quarry blast12 December 2022
- Magnitude
- 0.5ML
- Depth
- –
- Belgian time
- 09:30:082022-12-12
- UTC
- 08:30:082022-12-12
Main parameters
| Date and time | 2022-12-12 08:30:08 UTC 2022-12-12 09:30:08 Belgian time |
|---|---|
| Magnitude | ML 0.5 |
| Epicentral coordinates | 50.279° N, 4.897° E Uncertainty ± 3.4 km |
| Event ID | ROB 17940 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-12-12 10:17:55 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
- 9.5 – 63.9km
- Mean velocity, P wave
- 6.0km/s
- Mean velocity, S wave
- 3.2km/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: 5 measurements, root-mean-square deviation 0.22 s. S wave: 4 measurements, root-mean-square deviation 0.17 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 | |||||
| MRDMaredsous | 9.5 | 285 | 08:30:10.12+1.60 s | 08:30:11.56+3.04 s | 1.44 |
| GESGesves | 17.9 | 49 | 08:30:11.09+2.57 s | 08:30:14.13+5.61 s | 3.04 |
| RCHRochefort | 27.3 | 120 | – | 08:30:16.70+8.18 s | – |
| DOUDourbes | 29.8 | 227 | 08:30:13.73+5.21 s | – | – |
| CLAClavier | 32.7 | 62 | 08:30:14.03+5.51 s | 08:30:18.82+10.30 s | 4.79 |
| LCHLa Chartreuse | 63.9 | 51 | 08:30:19.08+10.56 s | – | – |