CELLES (BE)
Quarry blast17 October 2022
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 12:43:322022-10-17
- UTC
- 10:43:322022-10-17
Main parameters
| Date and time | 2022-10-17 10:43:32 UTC 2022-10-17 12:43:32 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.721° N, 3.446° E Uncertainty ± 6.2 km |
| Event ID | ROB 17405 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-10-22 18:54:29 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
- 9
- Epicentral distance
- 28.1 – 201.5km
- Mean velocity, P wave
- 6.5km/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: 7 measurements, root-mean-square deviation 0.32 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)9 stations | |||||
| LESLessines | 28.1 | 92 | 10:43:38.67+6.15 s | 10:43:42.26+9.74 s | 3.59 |
| SKQSteenkerque | 45.5 | 100 | 10:43:40.83+8.31 s | 10:43:46.00+13.48 s | 5.17 |
| BRQBracquegnies | 55.6 | 118 | 10:43:42.05+9.53 s | – | – |
| RQRRonquières | 56.5 | 103 | 10:43:42.55+10.03 s | – | – |
| SNFSeneffe | 63.7 | 111 | 10:43:43.13+10.61 s | – | – |
| TGATangissart | 77.2 | 99 | 10:43:45.82+13.30 s | – | – |
| DOUDourbes | 107.3 | 130 | 10:43:50.62+18.10 s | 10:44:04.43+31.91 s | 13.81 |
| GESGesves | 122.1 | 107 | 10:43:53.11+20.59 s | – | – |
| KLBKalborn | 201.5 | 109 | 10:44:05.16+32.64 s | – | – |