YVOIR (BE)
Quarry blast19 August 2022
- Magnitude
- 0.7ML
- Depth
- –
- Belgian time
- 15:58:292022-08-19
- UTC
- 13:58:292022-08-19
Main parameters
| Date and time | 2022-08-19 13:58:29 UTC 2022-08-19 15:58:29 Belgian time |
|---|---|
| Magnitude | ML 0.7 |
| Epicentral coordinates | 50.331° N, 4.885° E Uncertainty ± 1.3 km |
| Event ID | ROB 16885 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-08-19 18:49:40 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
- 8.9 – 33.4km
- Mean velocity, P wave
- 5.6km/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 0.17 s. S wave: 4 measurements, root-mean-square deviation 0.16 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 | 8.9 | 249 | 13:58:31.24+1.66 s | – | – |
| GESGesves | 15.6 | 67 | 13:58:32.51+2.93 s | 13:58:34.73+5.15 s | 2.22 |
| CLAClavier | 31.2 | 72 | 13:58:35.41+5.83 s | 13:58:39.64+10.06 s | 4.23 |
| RCHRochefort | 31.3 | 129 | 13:58:35.05+5.47 s | 13:58:39.29+9.71 s | 4.24 |
| DOUDourbes | 33.4 | 218 | 13:58:35.93+6.35 s | 13:58:40.01+10.43 s | 4.08 |