DURBUY (BE)
Quarry blast25 August 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 12:45:312022-08-25
- UTC
- 10:45:312022-08-25
Main parameters
| Date and time | 2022-08-25 10:45:31 UTC 2022-08-25 12:45:31 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.363° N, 5.567° E Uncertainty ± 1.5 km |
| Event ID | ROB 16960 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-08-26 15:04:50 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
- 19.9 – 75.5km
- Mean velocity, P wave
- 5.6km/s
- Mean velocity, S wave
- 3.4km/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 0.38 s. S wave: 5 measurements, root-mean-square deviation 0.20 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 | |||||
| CLAClavier | 19.9 | 288 | 10:45:34.42+3.30 s | 10:45:37.45+6.33 s | 3.03 |
| HOUHouvegnez | 31.2 | 92 | 10:45:36.78+5.66 s | 10:45:40.49+9.37 s | 3.71 |
| RCHRochefort | 33.5 | 226 | 10:45:38.02+6.90 s | 10:45:41.31+10.19 s | 3.29 |
| MEMHMembach | 41.7 | 49 | 10:45:38.67+7.55 s | 10:45:44.12+13.00 s | 5.45 |
| DOUDourbes | 75.5 | 247 | 10:45:44.80+13.68 s | 10:45:53.70+22.58 s | 8.90 |