ANDENNE (BE)
Quarry blast18 October 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 13:44:552022-10-18
- UTC
- 11:44:552022-10-18
Main parameters
| Date and time | 2022-10-18 11:44:55 UTC 2022-10-18 13:44:55 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.507° N, 4.976° E Uncertainty ± 0.9 km |
| Event ID | ROB 17420 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-10-22 18:56:32 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
- 15.7 – 95.8km
- Mean velocity, P wave
- 5.6km/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: 10 measurements, root-mean-square deviation 0.34 s. S wave: 7 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)8 stations | |||||
| GESGesves | 15.7 | 150 | 11:44:57.49+2.02 s | 11:44:59.11+3.64 s | 1.62 |
| CLAClavier | 25.1 | 113 | 11:45:00.03+4.56 s | 11:45:03.41+7.94 s | 3.38 |
| MRDMaredsous | 27.2 | 213 | 11:45:00.51+5.04 s | 11:45:04.03+8.56 s | 3.52 |
| TGATangissart | 34.0 | 289 | 11:45:01.23+5.76 s | 11:45:06.35+10.88 s | 5.12 |
| RCHRochefort | 43.0 | 155 | 11:45:03.17+7.70 s | 11:45:08.77+13.30 s | 5.60 |
| SNFSeneffe | 49.1 | 271 | 11:45:03.94+8.47 s | 11:45:10.26+14.79 s | 6.32 |
| MRGMont Rigi | 77.9 | 89 | 11:45:09.03+13.56 s | – | – |
| KLBKalborn | 92.5 | 119 | 11:45:12.18+16.71 s | – | – |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 95.8 | 80 | 11:45:12.49+17.02 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 73.4 | 67 | 11:45:07.82+12.35 s | 11:45:17.21+21.74 s | 9.39 |