WELLIN (BE)
Quarry blast5 December 2022
- Magnitude
- 0.8ML
- Depth
- –
- Belgian time
- 13:11:142022-12-05
- UTC
- 12:11:142022-12-05
Main parameters
| Date and time | 2022-12-05 12:11:14 UTC 2022-12-05 13:11:14 Belgian time |
|---|---|
| Magnitude | ML 0.8 |
| Epicentral coordinates | 50.082° N, 5.119° E Uncertainty ± 3.5 km |
| Event ID | ROB 17955 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-12-14 16:06:41 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
- 11.2 – 39.7km
- Mean velocity, P wave
- 6.4km/s
- Mean velocity, S wave
- 3.4km/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 0.56 s. S wave: 4 measurements, root-mean-square deviation 0.16 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 | 11.2 | 44 | 12:11:16.40+2.16 s | 12:11:18.20+3.96 s | 1.80 |
| GESGesves | 33.8 | 356 | 12:11:19.04+4.80 s | 12:11:24.85+10.61 s | 5.81 |
| DOUDourbes | 37.5 | 272 | 12:11:21.03+6.79 s | 12:11:25.74+11.50 s | 4.71 |
| CLAClavier | 39.7 | 19 | 12:11:21.31+7.07 s | 12:11:26.24+12.00 s | 4.93 |