LA ROCHE-EN-ARDENNE (BE)
Quarry blast2 September 2022
- Magnitude
- 1.9ML
- Depth
- –
- Belgian time
- 15:35:252022-09-02
- UTC
- 13:35:252022-09-02
Main parameters
| Date and time | 2022-09-02 13:35:25 UTC 2022-09-02 15:35:25 Belgian time |
|---|---|
| Magnitude | ML 1.9 |
| Epicentral coordinates | 50.200° N, 5.589° E Uncertainty ± 0.5 km |
| Event ID | ROB 17045 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-09-07 09:46:07 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
- 15
- Epicentral distance
- 26.3 – 118.3km
- Mean velocity, P wave
- 5.8km/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: 15 measurements, root-mean-square deviation 0.25 s. S wave: 7 measurements, root-mean-square deviation 0.23 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 | |||||
| RCHRochefort | 26.3 | 259 | 13:35:30.27+4.67 s | 13:35:33.82+8.22 s | 3.55 |
| CLAClavier | 31.8 | 320 | 13:35:31.32+5.72 s | 13:35:35.46+9.86 s | 4.14 |
| HOUHouvegnez | 34.2 | 60 | 13:35:31.49+5.89 s | 13:35:35.65+10.05 s | 4.16 |
| KLBKalborn | 38.8 | 107 | 13:35:32.44+6.84 s | 13:35:37.20+11.60 s | 4.76 |
| GESGesves | 41.2 | 300 | 13:35:33.01+7.41 s | – | – |
| MRGMont Rigi | 48.9 | 45 | 13:35:33.99+8.39 s | – | – |
| VIAVianden | 52.9 | 124 | 13:35:34.83+9.23 s | 13:35:41.38+15.78 s | 6.55 |
| MEMHMembach | 54.4 | 33 | 13:35:35.15+9.55 s | 13:35:41.91+16.31 s | 6.76 |
| TNLTernell | 57.6 | 42 | 13:35:35.73+10.13 s | – | – |
| DOUDourbes | 72.0 | 261 | 13:35:38.04+12.44 s | – | – |
| MOLSMol | 118.1 | 343 | 13:35:47.03+21.43 s | – | – |
| SKQSteenkerque | 118.3 | 296 | 13:35:45.96+20.36 s | 13:36:00.24+34.64 s | 14.28 |
| Dutch seismic network (KNMI)2 stations | |||||
| TERZTerziet | 65.9 | 20 | 13:35:37.22+11.62 s | – | – |
| HGNHeimansgroeve | 67.2 | 21 | 13:35:37.42+11.82 s | – | – |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 71.4 | 46 | 13:35:37.89+12.29 s | – | – |