WAIMES (BE)
Quarry blast19 October 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 11:32:472022-10-19
- UTC
- 09:32:472022-10-19
Main parameters
| Date and time | 2022-10-19 09:32:47 UTC 2022-10-19 11:32:47 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.424° N, 6.112° E Uncertainty ± 0.6 km |
| Event ID | ROB 17425 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-10-22 18:57:25 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
- 14
- Epicentral distance
- 10.0 – 146.2km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.5km/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: 13 measurements, root-mean-square deviation 0.29 s. S wave: 8 measurements, root-mean-square deviation 0.29 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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)11 stations | |||||
| MRGMont Rigi | 10.0 | 345 | 09:32:49.82+1.89 s | – | – |
| HOUHouvegnez | 10.9 | 224 | 09:32:49.92+1.99 s | 09:32:51.32+3.39 s | 1.40 |
| MEMSMembach | 21.8 | 341 | 09:32:52.02+4.09 s | 09:32:54.46+6.53 s | 2.44 |
| KLBKalborn | 36.0 | 180 | 09:32:54.53+6.60 s | 09:32:58.90+10.97 s | 4.37 |
| VIAVianden | 54.8 | 173 | 09:32:57.62+9.69 s | – | – |
| RCHRochefort | 69.8 | 245 | 09:33:01.09+13.16 s | 09:33:08.74+20.81 s | 7.65 |
| GESGesves | 73.0 | 267 | 09:33:00.63+12.70 s | – | – |
| MRDMaredsous | 96.6 | 262 | 09:33:04.98+17.05 s | – | – |
| DOUDourbes | 114.2 | 252 | 09:33:07.42+19.49 s | – | – |
| TGATangissart | 114.5 | 281 | 09:33:07.88+19.95 s | 09:33:21.18+33.25 s | 13.30 |
| SKQSteenkerque | 146.2 | 281 | 09:33:12.85+24.92 s | – | – |
| Dutch seismic network (KNMI)2 stations | |||||
| TERZTerziet | 39.8 | 339 | 09:32:55.11+7.18 s | 09:33:00.32+12.39 s | 5.21 |
| HGNHeimansgroeve | 39.9 | 341 | 09:32:55.27+7.34 s | 09:33:00.38+12.45 s | 5.11 |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 28.5 | 30 | 09:32:53.25+5.32 s | 09:32:56.88+8.95 s | 3.63 |