LEUZE-EN-HAINAUT (BE)
Quarry blast23 November 2022
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 13:00:232022-11-23
- UTC
- 12:00:232022-11-23
Main parameters
| Date and time | 2022-11-23 12:00:23 UTC 2022-11-23 13:00:23 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.587° N, 3.568° E Uncertainty ± 3.7 km |
| Event ID | ROB 17835 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-24 09:14:25 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
- 23.9 – 188.8km
- Mean velocity, P wave
- 5.8km/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: 8 measurements, root-mean-square deviation 0.22 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 | 23.9 | 54 | 12:00:27.54+4.53 s | – | – |
| SKQSteenkerque | 36.9 | 79 | 12:00:29.46+6.45 s | 12:00:34.62+11.61 s | 5.16 |
| BRQBracquegnies | 42.0 | 106 | 12:00:30.02+7.01 s | – | – |
| RQRRonquières | 46.6 | 87 | 12:00:31.09+8.08 s | – | – |
| SNFSeneffe | 51.5 | 99 | 12:00:31.79+8.78 s | – | – |
| TGATangissart | 67.6 | 88 | 12:00:34.39+11.38 s | – | – |
| DOUDourbes | 91.3 | 126 | 12:00:39.06+16.05 s | – | – |
| GESGesves | 110.1 | 101 | 12:00:42.03+19.02 s | – | – |
| KLBKalborn | 188.8 | 106 | 12:00:53.84+30.83 s | 12:01:15.69+52.68 s | 21.85 |