MARCHE-EN-FAMENNE (BE)
Quarry blast11 April 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 12:04:502022-04-11
- UTC
- 10:04:502022-04-11
Main parameters
| Date and time | 2022-04-11 10:04:50 UTC 2022-04-11 12:04:50 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.186° N, 5.260° E Uncertainty ± 1.0 km |
| Event ID | ROB 15920 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-04-13 08:20:36 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
- 4
- Epicentral distance
- 4.2 – 56.3km
- Mean velocity, P wave
- 5.8km/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 0.07 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)4 stations | |||||
| RCHRochefort | 4.2 | 214 | 10:04:51.70+0.80 s | 10:04:52.54+1.64 s | 0.84 |
| CLAClavier | 26.1 | 7 | 10:04:55.66+4.76 s | 10:04:59.40+8.50 s | 3.74 |
| DOUDourbes | 48.6 | 258 | 10:04:59.36+8.46 s | 10:05:05.55+14.65 s | 6.19 |
| HOUHouvegnez | 56.3 | 70 | 10:05:00.69+9.79 s | – | – |
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