FERNELMONT (BE)
Quarry blast8 December 2021
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 14:26:362021-12-08
- UTC
- 13:26:362021-12-08
Main parameters
| Date and time | 2021-12-08 13:26:36 UTC 2021-12-08 14:26:36 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.525° N, 5.022° E Uncertainty ± 3.4 km |
| Event ID | ROB 14970 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-12-10 09:52:47 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
- 16.2 – 52.4km
- Mean velocity, P wave
- 6.2km/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: 6 measurements, root-mean-square deviation 0.28 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 | |||||
| GESGesves | 16.2 | 163 | 13:26:40.01+3.12 s | 13:26:41.32+4.43 s | 1.31 |
| CLAClavier | 23.1 | 121 | 13:26:41.89+5.00 s | 13:26:43.60+6.71 s | 1.71 |
| MRDMaredsous | 30.7 | 216 | 13:26:42.39+5.50 s | – | – |
| TGATangissart | 36.5 | 284 | 13:26:43.33+6.44 s | – | – |
| RCHRochefort | 43.6 | 160 | 13:26:44.91+8.02 s | 13:26:51.10+14.21 s | 6.19 |
| SNFSeneffe | 52.4 | 269 | 13:26:46.00+9.11 s | – | – |
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