DINANT (BE)
Quarry blast17 October 2022
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 10:30:092022-10-17
- UTC
- 08:30:092022-10-17
Main parameters
| Date and time | 2022-10-17 08:30:09 UTC 2022-10-17 10:30:09 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.275° N, 4.904° E Uncertainty ± 0.3 km |
| Event ID | ROB 17400 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-10-22 18:53:59 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
- 10.1 – 32.6km
- Mean velocity, P wave
- 6.0km/s
- Mean velocity, S wave
- 3.3km/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 0.10 s. S wave: 5 measurements, root-mean-square deviation 0.07 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 | |||||
| MRDMaredsous | 10.1 | 287 | 08:30:11.96+2.03 s | 08:30:13.48+3.55 s | 1.52 |
| GESGesves | 17.9 | 47 | 08:30:13.11+3.18 s | 08:30:15.77+5.84 s | 2.66 |
| RCHRochefort | 26.7 | 120 | 08:30:14.86+4.93 s | 08:30:18.31+8.38 s | 3.45 |
| DOUDourbes | 29.8 | 228 | 08:30:15.23+5.30 s | 08:30:19.29+9.36 s | 4.06 |
| CLAClavier | 32.6 | 60 | 08:30:15.82+5.89 s | 08:30:20.21+10.28 s | 4.39 |