MARCHE-EN-FAMENNE (BE)
Quarry blast26 April 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 11:29:112022-04-26
- UTC
- 09:29:112022-04-26
Main parameters
| Date and time | 2022-04-26 09:29:11 UTC 2022-04-26 11:29:11 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.161° N, 5.277° E Uncertainty ± 1.5 km |
| Event ID | ROB 16000 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-04-26 15:58:51 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
- 7
- Epicentral distance
- 3.6 – 72.1km
- Mean velocity, P wave
- 6.4km/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: 7 measurements, root-mean-square deviation 0.58 s. S wave: 5 measurements, root-mean-square deviation 0.25 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)7 stations | |||||
| RCHRochefort | 3.6 | 259 | 09:29:12.65+0.75 s | – | – |
| GESGesves | 28.3 | 332 | 09:29:17.35+5.45 s | 09:29:20.64+8.74 s | 3.29 |
| CLAClavier | 28.7 | 4 | 09:29:17.43+5.53 s | 09:29:20.99+9.09 s | 3.56 |
| MRDMaredsous | 39.5 | 294 | 09:29:18.86+6.96 s | 09:29:23.53+11.63 s | 4.67 |
| DOUDourbes | 49.3 | 262 | 09:29:20.58+8.68 s | 09:29:27.06+15.16 s | 6.48 |
| KLBKalborn | 59.9 | 96 | 09:29:22.85+10.95 s | 09:29:29.59+17.69 s | 6.74 |
| MEMHMembach | 72.1 | 46 | 09:29:22.87+10.97 s | – | – |