ANDENNE (BE)
Quarry blast23 June 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 13:43:522022-06-23
- UTC
- 11:43:522022-06-23
Main parameters
| Date and time | 2022-06-23 11:43:52 UTC 2022-06-23 13:43:52 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.478° N, 4.986° E Uncertainty ± 1.3 km |
| Event ID | ROB 16460 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-24 11:15:42 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
- 10
- Epicentral distance
- 12.6 – 90.4km
- Mean velocity, P wave
- 5.9km/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: 10 measurements, root-mean-square deviation 0.47 s. S wave: 8 measurements, root-mean-square deviation 0.60 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)9 stations | |||||
| GESGesves | 12.6 | 145 | 11:43:54.84+2.30 s | 11:43:56.26+3.72 s | 1.42 |
| CLAClavier | 23.4 | 106 | 11:43:57.09+4.55 s | 11:44:00.37+7.83 s | 3.28 |
| MRDMaredsous | 25.0 | 218 | 11:43:57.37+4.83 s | 11:43:59.70+7.16 s | 2.33 |
| TGATangissart | 35.8 | 293 | 11:43:58.81+6.27 s | 11:44:03.60+11.06 s | 4.79 |
| RCHRochefort | 39.9 | 154 | 11:44:00.26+7.72 s | 11:44:03.99+11.45 s | 3.73 |
| DOUDourbes | 50.9 | 213 | 11:44:02.23+9.69 s | 11:44:08.81+16.27 s | 6.58 |
| SKQSteenkerque | 66.9 | 287 | 11:44:03.50+10.96 s | – | – |
| MEMHMembach | 74.0 | 78 | 11:44:05.27+12.73 s | 11:44:14.90+22.36 s | 9.63 |
| KLBKalborn | 90.4 | 117 | 11:44:09.06+16.52 s | 11:44:18.56+26.02 s | 9.50 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 74.1 | 64 | 11:44:05.22+12.68 s | – | – |