MONT-DE-L'ENCLUS (BE)
Quarry blast17 November 2022
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 12:32:162022-11-17
- UTC
- 11:32:162022-11-17
Main parameters
| Date and time | 2022-11-17 11:32:16 UTC 2022-11-17 12:32:16 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.746° N, 3.518° E Uncertainty ± 10.1 km |
| Event ID | ROB 17750 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 14:45:55 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
- 10
- Epicentral distance
- 41.2 – 197.7km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.4km/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 0.61 s. S wave: 4 measurements, root-mean-square deviation 0.62 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)10 stations | |||||
| SKQSteenkerque | 41.2 | 105 | 11:32:24.31+7.35 s | 11:32:30.04+13.08 s | 5.73 |
| RQRRonquières | 52.4 | 107 | 11:32:25.28+8.32 s | – | – |
| BRQBracquegnies | 52.8 | 124 | 11:32:25.53+8.57 s | – | – |
| SNFSeneffe | 60.2 | 115 | 11:32:26.67+9.71 s | – | – |
| TGATangissart | 72.7 | 102 | 11:32:29.11+12.15 s | – | – |
| MRDMaredsous | 101.5 | 119 | 11:32:35.42+18.46 s | 11:32:47.11+30.15 s | 11.69 |
| DOUDourbes | 105.4 | 133 | 11:32:35.88+18.92 s | 11:32:47.44+30.48 s | 11.56 |
| GESGesves | 118.2 | 109 | 11:32:36.81+19.85 s | 11:32:52.09+35.13 s | 15.28 |
| CLAClavier | 131.5 | 105 | 11:32:39.52+22.56 s | – | – |
| KLBKalborn | 197.7 | 110 | 11:32:48.59+31.63 s | – | – |