PERUWELZ (BE)
Quarry blast15 November 2022
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 13:02:072022-11-15
- UTC
- 12:02:072022-11-15
Main parameters
| Date and time | 2022-11-15 12:02:07 UTC 2022-11-15 13:02:07 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.571° N, 3.574° E Uncertainty ± 5.4 km |
| Event ID | ROB 17725 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 14:44:28 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
- 13
- Epicentral distance
- 24.6 – 187.9km
- Mean velocity, P wave
- 5.7km/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: 6 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)13 stations | |||||
| LESLessines | 24.6 | 51 | 12:02:11.35+3.59 s | 12:02:15.51+7.75 s | 4.16 |
| SKQSteenkerque | 36.8 | 76 | 12:02:13.98+6.22 s | 12:02:19.12+11.36 s | 5.14 |
| TGATangissart | 67.2 | 86 | 12:02:18.72+10.96 s | – | – |
| DOUDourbes | 89.9 | 126 | 12:02:23.54+15.78 s | – | – |
| MRDMaredsous | 89.9 | 109 | 12:02:23.13+15.37 s | – | – |
| GESGesves | 109.3 | 100 | 12:02:26.26+18.50 s | – | – |
| CLAClavier | 123.8 | 97 | 12:02:29.68+21.92 s | – | – |
| MOLSMol | 128.1 | 56 | 12:02:30.51+22.75 s | – | – |
| MOL1Mol | 128.1 | 56 | 12:02:30.43+22.67 s | – | – |
| HOUHouvegnez | 174.3 | 97 | 12:02:36.46+28.70 s | – | – |
| MRGMont Rigi | 177.4 | 91 | 12:02:36.24+28.48 s | – | – |
| TNLTernell | 181.0 | 88 | 12:02:37.06+29.30 s | – | – |
| KLBKalborn | 187.9 | 105 | 12:02:38.17+30.41 s | – | – |