MARCHE-EN-FAMENNE (BE)
Quarry blast10 August 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 13:22:582022-08-10
- UTC
- 11:22:582022-08-10
Main parameters
| Date and time | 2022-08-10 11:22:58 UTC 2022-08-10 13:22:58 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.177° N, 5.269° E Uncertainty ± 0.7 km |
| Event ID | ROB 16785 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-08-11 23:26:09 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
- 6
- Epicentral distance
- 3.9 – 60.6km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.5km/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: 6 measurements, root-mean-square deviation 0.16 s. S wave: 6 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)6 stations | |||||
| RCHRochefort | 3.9 | 231 | 11:22:59.03+0.81 s | 11:22:59.76+1.54 s | 0.73 |
| GESGesves | 26.5 | 331 | 11:23:03.13+4.91 s | 11:23:06.30+8.08 s | 3.17 |
| CLAClavier | 27.0 | 5 | 11:23:03.27+5.05 s | 11:23:06.95+8.73 s | 3.68 |
| MRDMaredsous | 38.4 | 291 | 11:23:04.93+6.71 s | 11:23:09.65+11.43 s | 4.72 |
| DOUDourbes | 49.1 | 260 | 11:23:06.85+8.63 s | 11:23:12.69+14.47 s | 5.84 |
| KLBKalborn | 60.6 | 98 | 11:23:09.12+10.90 s | 11:23:16.03+17.81 s | 6.91 |