CELLES (BE)
Quarry blast14 September 2022
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 13:00:062022-09-14
- UTC
- 11:00:062022-09-14
Main parameters
| Date and time | 2022-09-14 11:00:06 UTC 2022-09-14 13:00:06 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.730° N, 3.414° E Uncertainty ± 8.9 km |
| Event ID | ROB 17130 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-09-26 13:25:54 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
- 8
- Epicentral distance
- 47.9 – 143.8km
- 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 0.23 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)8 stations | |||||
| SKQSteenkerque | 47.9 | 101 | 11:00:15.07+8.80 s | 11:00:20.87+14.60 s | 5.80 |
| BRQBracquegnies | 58.1 | 118 | 11:00:16.14+9.87 s | – | – |
| RQRRonquières | 59.0 | 103 | 11:00:16.44+10.17 s | – | – |
| SNFSeneffe | 66.2 | 111 | 11:00:17.51+11.24 s | 11:00:24.97+18.70 s | 7.46 |
| TGATangissart | 79.6 | 100 | 11:00:20.08+13.81 s | – | – |
| DOUDourbes | 109.7 | 130 | 11:00:25.20+18.93 s | 11:00:39.38+33.11 s | 14.18 |
| GESGesves | 124.6 | 107 | 11:00:27.40+21.13 s | 11:00:43.65+37.38 s | 16.25 |
| RCHRochefort | 143.8 | 116 | 11:00:31.05+24.78 s | – | – |