MARCHE-EN-FAMENNE (BE)
Quarry blast12 May 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 12:07:052022-05-12
- UTC
- 10:07:052022-05-12
Main parameters
| Date and time | 2022-05-12 10:07:05 UTC 2022-05-12 12:07:05 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.172° N, 5.260° E Uncertainty ± 1.0 km |
| Event ID | ROB 16175 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-05-13 15:47:49 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
- 5
- Epicentral distance
- 3.1 – 61.2km
- 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: 5 measurements, root-mean-square deviation 0.14 s. S wave: 4 measurements, root-mean-square deviation 0.08 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)5 stations | |||||
| RCHRochefort | 3.1 | 231 | 10:07:06.67+0.73 s | 10:07:07.08+1.14 s | 0.41 |
| MRDMaredsous | 38.0 | 293 | 10:07:12.95+7.01 s | 10:07:17.25+11.31 s | 4.30 |
| DOUDourbes | 48.3 | 260 | 10:07:14.70+8.76 s | 10:07:20.38+14.44 s | 5.68 |
| HOUHouvegnez | 56.8 | 69 | 10:07:16.08+10.14 s | – | – |
| KLBKalborn | 61.2 | 97 | 10:07:16.58+10.64 s | 10:07:23.89+17.95 s | 7.31 |