MARCHE-EN-FAMENNE (BE)
Quarry blast13 April 2022
- Magnitude
- 0.9ML
- Depth
- –
- Belgian time
- 10:51:532022-04-13
- UTC
- 08:51:532022-04-13
Main parameters
| Date and time | 2022-04-13 08:51:53 UTC 2022-04-13 10:51:53 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.162° N, 5.273° E Uncertainty ± 6.1 km |
| Event ID | ROB 15965 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-04-15 08:53:33 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
- 3.4 – 49.1km
- Mean velocity, P wave
- 5.4km/s
- Mean velocity, S wave
- 3.2km/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: 4 measurements, root-mean-square deviation 0.11 s. S wave: 5 measurements, root-mean-square deviation 0.10 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 | 3.4 | 257 | 08:51:54.18+0.44 s | 08:51:54.44+0.70 s | 0.26 |
| GESGesves | 28.2 | 332 | 08:51:58.91+5.17 s | 08:52:02.20+8.46 s | 3.29 |
| CLAClavier | 28.7 | 4 | 08:51:58.94+5.20 s | 08:52:02.59+8.85 s | 3.65 |
| MRDMaredsous | 39.3 | 294 | – | 08:52:05.68+11.94 s | – |
| DOUDourbes | 49.1 | 262 | 08:52:02.48+8.74 s | 08:52:08.76+15.02 s | 6.28 |