BASTOGNE (BE)
Quarry blast27 June 2022
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 12:02:142022-06-27
- UTC
- 10:02:142022-06-27
Main parameters
| Date and time | 2022-06-27 10:02:14 UTC 2022-06-27 12:02:14 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.039° N, 5.820° E Uncertainty ± 1.4 km |
| Event ID | ROB 16510 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-30 16:35:25 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
- 29.8 – 121.4km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.2km/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: 5 measurements, root-mean-square deviation 0.17 s. S wave: 4 measurements, root-mean-square deviation 0.41 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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 | |||||
| VIAVianden | 29.8 | 113 | 10:02:19.55+5.28 s | 10:02:23.43+9.16 s | 3.88 |
| HOUHouvegnez | 37.4 | 21 | 10:02:20.50+6.23 s | 10:02:26.20+11.93 s | 5.70 |
| RCHRochefort | 44.3 | 287 | 10:02:21.75+7.48 s | 10:02:27.20+12.93 s | 5.45 |
| MRGMont Rigi | 55.5 | 19 | 10:02:24.02+9.75 s | 10:02:31.33+17.06 s | 7.31 |
| DOUDourbes | 87.9 | 274 | 10:02:29.74+15.47 s | – | – |
| SNFSeneffe | 121.4 | 296 | 10:02:35.89+21.62 s | – | – |