LA ROCHE-EN-ARDENNE (BE)
Quarry blast18 November 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 13:14:452022-11-18
- UTC
- 12:14:452022-11-18
Main parameters
| Date and time | 2022-11-18 12:14:45 UTC 2022-11-18 13:14:45 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.197° N, 5.596° E Uncertainty ± 0.7 km |
| Event ID | ROB 17770 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 14:47:08 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
- 16
- Epicentral distance
- 32.4 – 99.7km
- 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: 16 measurements, root-mean-square deviation 0.19 s.
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)12 stations | |||||
| CLAClavier | 32.4 | 320 | 12:14:50.77+5.70 s | 12:14:53.95+8.88 s | 3.18 |
| HOUHouvegnez | 34.0 | 59 | 12:14:51.05+5.98 s | 12:14:55.11+10.04 s | 4.06 |
| KLBKalborn | 38.2 | 106 | 12:14:51.98+6.91 s | – | – |
| GESGesves | 41.9 | 300 | 12:14:52.44+7.37 s | – | – |
| MRGMont Rigi | 48.9 | 44 | 12:14:53.57+8.50 s | – | – |
| VIAVianden | 52.3 | 124 | 12:14:54.59+9.52 s | 12:15:00.00+14.93 s | 5.41 |
| MEMSMembach | 54.5 | 33 | 12:14:54.73+9.66 s | – | – |
| MRDMaredsous | 60.2 | 282 | 12:14:55.45+10.38 s | – | – |
| EBNEben-Emael | 67.1 | 5 | 12:14:56.92+11.85 s | – | – |
| DOUDourbes | 72.4 | 261 | 12:14:57.19+12.12 s | – | – |
| TGATangissart | 88.8 | 301 | 12:15:00.35+15.28 s | – | – |
| SNFSeneffe | 99.7 | 291 | 12:15:02.47+17.40 s | – | – |
| Dutch seismic network (KNMI)3 stations | |||||
| TERZTerziet | 66.1 | 19 | 12:14:56.49+11.42 s | – | – |
| HGNHeimansgroeve | 67.5 | 21 | 12:14:56.84+11.77 s | – | – |
| VKBValkenburg | 75.8 | 10 | 12:14:58.44+13.37 s | – | – |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 71.4 | 45 | 12:14:57.38+12.31 s | – | – |
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