LA ROCHE-EN-ARDENNE (BE)
Quarry blast4 February 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 15:03:462022-02-04
- UTC
- 14:03:462022-02-04
Main parameters
| Date and time | 2022-02-04 14:03:46 UTC 2022-02-04 15:03:46 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.194° N, 5.590° E Uncertainty ± 0.6 km |
| Event ID | ROB 15400 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-02-07 09:27:14 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
- 11
- Epicentral distance
- 26.3 – 72.0km
- 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: 11 measurements, root-mean-square deviation 0.17 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)10 stations | |||||
| RCHRochefort | 26.3 | 261 | 14:03:51.43+4.78 s | 14:03:54.86+8.21 s | 3.43 |
| CLAClavier | 32.3 | 321 | 14:03:52.43+5.78 s | – | – |
| HOUHouvegnez | 34.5 | 59 | 14:03:52.58+5.93 s | – | – |
| KLBKalborn | 38.6 | 106 | 14:03:53.57+6.92 s | 14:03:58.25+11.60 s | 4.68 |
| GESGesves | 41.6 | 301 | 14:03:54.14+7.49 s | – | – |
| MRGMont Rigi | 49.3 | 44 | 14:03:55.59+8.94 s | – | – |
| VIAVianden | 52.5 | 123 | 14:03:56.24+9.59 s | – | – |
| MEMSMembach | 54.9 | 33 | 14:03:56.19+9.54 s | 14:04:02.26+15.61 s | 6.07 |
| MEMHMembach | 54.9 | 33 | 14:03:56.30+9.65 s | – | – |
| DOUDourbes | 72.0 | 262 | 14:03:59.01+12.36 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 67.8 | 21 | 14:03:58.41+11.76 s | – | – |
Did you feel an earthquake?The inquiry takes just a few minutes. Every report helps seismologists assess the effects of the earthquake.
Take the inquiry