ANDENNE (BE)
Quarry blast22 February 2022
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:20:042022-02-22
- UTC
- 13:20:042022-02-22
Main parameters
| Date and time | 2022-02-22 13:20:04 UTC 2022-02-22 14:20:04 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.494° N, 4.987° E Uncertainty ± 1.1 km |
| Event ID | ROB 15500 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-02-25 18:36:28 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
- 8
- Epicentral distance
- 14.1 – 73.6km
- Mean velocity, P wave
- 5.7km/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: 8 measurements, root-mean-square deviation 0.46 s. S wave: 8 measurements, root-mean-square deviation 0.55 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 | 14.1 | 150 | 13:20:06.56+2.28 s | 13:20:08.78+4.50 s | 2.22 |
| CLAClavier | 23.9 | 110 | 13:20:08.51+4.23 s | 13:20:11.92+7.64 s | 3.41 |
| MRDMaredsous | 26.5 | 216 | 13:20:08.89+4.61 s | 13:20:12.87+8.59 s | 3.98 |
| TGATangissart | 35.2 | 291 | 13:20:10.16+5.88 s | 13:20:15.42+11.14 s | 5.26 |
| RCHRochefort | 41.4 | 156 | 13:20:11.82+7.54 s | 13:20:18.03+13.75 s | 6.21 |
| DOUDourbes | 52.5 | 212 | 13:20:13.84+9.56 s | 13:20:19.54+15.26 s | 5.70 |
| MEMHMembach | 73.6 | 80 | 13:20:18.29+14.01 s | 13:20:26.18+21.90 s | 7.89 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 73.3 | 65 | 13:20:16.94+12.66 s | 13:20:25.82+21.54 s | 8.88 |