LA ROCHE-EN-ARDENNE (BE)
Quarry blast22 September 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 14:20:222022-09-22
- UTC
- 12:20:222022-09-22
Main parameters
| Date and time | 2022-09-22 12:20:22 UTC 2022-09-22 14:20:22 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.198° N, 5.596° E Uncertainty ± 1.0 km |
| Event ID | ROB 17205 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-09-26 13:30:15 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
- 26.8 – 72.4km
- 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: 8 measurements, root-mean-square deviation 0.18 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)7 stations | |||||
| RCHRochefort | 26.8 | 260 | 12:20:27.08+4.83 s | 12:20:30.47+8.22 s | 3.39 |
| CLAClavier | 32.3 | 320 | 12:20:28.14+5.89 s | – | – |
| HOUHouvegnez | 34.0 | 59 | 12:20:28.30+6.05 s | 12:20:32.65+10.40 s | 4.35 |
| KLBKalborn | 38.3 | 106 | 12:20:28.71+6.46 s | – | – |
| MRGMont Rigi | 48.8 | 44 | 12:20:30.93+8.68 s | – | – |
| VIAVianden | 52.3 | 124 | 12:20:31.79+9.54 s | – | – |
| DOUDourbes | 72.4 | 261 | 12:20:34.87+12.62 s | – | – |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 71.3 | 45 | 12:20:34.54+12.29 s | – | – |
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