DINANT (BE)
Quarry blast4 October 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 10:30:322022-10-04
- UTC
- 08:30:322022-10-04
Main parameters
| Date and time | 2022-10-04 08:30:32 UTC 2022-10-04 10:30:32 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.279° N, 4.913° E Uncertainty ± 1.3 km |
| Event ID | ROB 17485 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-10-27 13:03:47 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
- 10.7 – 31.7km
- Mean velocity, P wave
- 5.9km/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 0.39 s. S wave: 5 measurements, root-mean-square deviation 0.14 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 | 10.7 | 284 | 08:30:34.66+1.92 s | 08:30:36.51+3.77 s | 1.85 |
| GESGesves | 17.1 | 46 | 08:30:35.96+3.22 s | 08:30:38.38+5.64 s | 2.42 |
| RCHRochefort | 26.3 | 122 | 08:30:36.73+3.99 s | 08:30:41.21+8.47 s | 4.48 |
| DOUDourbes | 30.6 | 228 | 08:30:38.54+5.80 s | 08:30:42.26+9.52 s | 3.72 |
| CLAClavier | 31.7 | 61 | 08:30:38.63+5.89 s | 08:30:42.88+10.14 s | 4.25 |