MARCHE-EN-FAMENNE (BE)
Quarry blast2 February 2022
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 12:37:202022-02-02
- UTC
- 11:37:202022-02-02
Main parameters
| Date and time | 2022-02-02 11:37:20 UTC 2022-02-02 12:37:20 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.190° N, 5.248° E Uncertainty ± 5.4 km |
| Event ID | ROB 15345 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-02-07 09:24:29 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 – 47.9km
- Mean velocity, P wave
- 5.7km/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 0.17 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 | 201 | 11:37:21.03+0.64 s | 11:37:22.02+1.63 s | 0.99 |
| CLAClavier | 25.7 | 9 | 11:37:25.13+4.74 s | – | – |
| MRDMaredsous | 36.4 | 290 | 11:37:27.00+6.61 s | – | – |
| DOUDourbes | 47.9 | 257 | 11:37:28.66+8.27 s | – | – |
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