CELLES (BE)
Quarry blast7 October 2022
- Magnitude
- 1.9ML
- Depth
- –
- Belgian time
- 12:58:472022-10-07
- UTC
- 10:58:472022-10-07
Main parameters
| Date and time | 2022-10-07 10:58:47 UTC 2022-10-07 12:58:47 Belgian time |
|---|---|
| Magnitude | ML 1.9 |
| Epicentral coordinates | 50.718° N, 3.444° E Uncertainty ± 9.5 km |
| Event ID | ROB 17315 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-10-11 11:20:25 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
- 9
- Epicentral distance
- 45.6 – 201.5km
- Mean velocity, P wave
- 5.9km/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 0.24 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 | |||||
| SKQSteenkerque | 45.6 | 99 | 10:58:55.08+7.93 s | 10:59:01.04+13.89 s | 5.96 |
| RQRRonquières | 56.6 | 102 | 10:58:56.85+9.70 s | – | – |
| SNFSeneffe | 63.8 | 111 | 10:58:57.48+10.33 s | 10:59:05.49+18.34 s | 8.01 |
| TGATangissart | 77.3 | 99 | 10:59:00.01+12.86 s | – | – |
| MRDMaredsous | 104.7 | 116 | 10:59:05.03+17.88 s | – | – |
| DOUDourbes | 107.3 | 130 | 10:59:05.31+18.16 s | 10:59:18.20+31.05 s | 12.89 |
| GESGesves | 122.2 | 107 | 10:59:07.60+20.45 s | – | – |
| CLAClavier | 135.8 | 103 | 10:59:11.15+24.00 s | – | – |
| KLBKalborn | 201.5 | 109 | 10:59:19.49+32.34 s | – | – |