LIBRAMONT-CHEVIGNY (BE)
Quarry blast15 September 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 14:52:532022-09-15
- UTC
- 12:52:532022-09-15
Main parameters
| Date and time | 2022-09-15 12:52:53 UTC 2022-09-15 14:52:53 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 49.953° N, 5.345° E Uncertainty ± 2.2 km |
| Event ID | ROB 17140 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-09-26 13:26:43 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
- 7
- Epicentral distance
- 24.0 – 103.4km
- Mean velocity, P wave
- 5.7km/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: 7 measurements, root-mean-square deviation 0.32 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)6 stations | |||||
| RCHRochefort | 24.0 | 339 | 12:52:58.12+4.56 s | 12:53:00.84+7.28 s | 2.72 |
| CLAClavier | 51.9 | 357 | 12:53:03.13+9.57 s | – | – |
| DOUDourbes | 56.0 | 287 | 12:53:03.86+10.30 s | 12:53:09.89+16.33 s | 6.03 |
| KLBKalborn | 57.1 | 73 | 12:53:03.48+9.92 s | 12:53:09.48+15.92 s | 6.00 |
| HOUHouvegnez | 64.9 | 46 | 12:53:04.81+11.25 s | – | – |
| MRGMont Rigi | 81.0 | 40 | 12:53:07.59+14.03 s | – | – |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 103.4 | 41 | 12:53:12.33+18.77 s | – | – |
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