WELLIN (BE)
Quarry blast27 June 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 13:19:342022-06-27
- UTC
- 11:19:342022-06-27
Main parameters
| Date and time | 2022-06-27 11:19:34 UTC 2022-06-27 13:19:34 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.073° N, 5.109° E Uncertainty ± 2.2 km |
| Event ID | ROB 16520 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-07-04 14:14:26 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
- 12.4 – 40.9km
- Mean velocity, P wave
- 6.2km/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 0.24 s. S wave: 4 measurements, root-mean-square deviation 0.20 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 | 12.4 | 43 | 11:19:36.31+2.25 s | 11:19:38.55+4.49 s | 2.24 |
| GESGesves | 34.7 | 357 | 11:19:39.75+5.69 s | 11:19:44.69+10.63 s | 4.94 |
| DOUDourbes | 36.8 | 274 | 11:19:40.65+6.59 s | 11:19:45.44+11.38 s | 4.79 |
| CLAClavier | 40.9 | 20 | 11:19:41.24+7.18 s | 11:19:46.86+12.80 s | 5.62 |