ANDENNE (BE)
Quarry blast18 August 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:39:162022-08-18
- UTC
- 12:39:162022-08-18
Main parameters
| Date and time | 2022-08-18 12:39:16 UTC 2022-08-18 14:39:16 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.504° N, 4.987° E Uncertainty ± 1.2 km |
| Event ID | ROB 16870 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-08-18 15:17:46 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
- 7
- Epicentral distance
- 15.0 – 91.7km
- Mean velocity, P wave
- 5.7km/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: 7 measurements, root-mean-square deviation 0.13 s. S wave: 6 measurements, root-mean-square deviation 0.39 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)7 stations | |||||
| GESGesves | 15.0 | 152 | 12:39:18.67+2.53 s | 12:39:20.17+4.03 s | 1.50 |
| CLAClavier | 24.3 | 113 | 12:39:20.73+4.59 s | 12:39:23.81+7.67 s | 3.08 |
| MRDMaredsous | 27.3 | 215 | 12:39:20.96+4.82 s | 12:39:25.16+9.02 s | 4.20 |
| TGATangissart | 34.8 | 289 | 12:39:22.25+6.11 s | 12:39:26.75+10.61 s | 4.50 |
| RCHRochefort | 42.4 | 156 | 12:39:23.80+7.66 s | 12:39:29.10+12.96 s | 5.30 |
| DOUDourbes | 53.4 | 212 | 12:39:25.58+9.44 s | 12:39:32.16+16.02 s | 6.58 |
| KLBKalborn | 91.7 | 119 | 12:39:32.38+16.24 s | – | – |