BASTOGNE (BE)
Quarry blast20 July 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 15:11:162022-07-20
- UTC
- 13:11:162022-07-20
Main parameters
| Date and time | 2022-07-20 13:11:16 UTC 2022-07-20 15:11:16 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.037° N, 5.726° E Uncertainty ± 3.3 km |
| Event ID | ROB 16650 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-07-22 10:52:15 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
- 9
- Epicentral distance
- 28.3 – 82.1km
- Mean velocity, P wave
- 5.6km/s
- Mean velocity, S wave
- 3.5km/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: 9 measurements, root-mean-square deviation 0.55 s. S wave: 8 measurements, root-mean-square deviation 0.56 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)8 stations | |||||
| KLBKalborn | 28.3 | 76 | 13:11:21.15+5.07 s | 13:11:24.10+8.02 s | 2.95 |
| RCHRochefort | 38.0 | 290 | 13:11:21.79+5.71 s | 13:11:28.57+12.49 s | 6.78 |
| HOUHouvegnez | 40.5 | 29 | 13:11:23.48+7.40 s | 13:11:28.32+12.24 s | 4.84 |
| CLAClavier | 52.1 | 325 | 13:11:26.11+10.03 s | – | – |
| MRGMont Rigi | 58.3 | 25 | 13:11:27.19+11.11 s | 13:11:33.51+17.43 s | 6.32 |
| MEMHMembach | 66.7 | 18 | 13:11:28.53+12.45 s | 13:11:35.20+19.12 s | 6.67 |
| MEMSMembach | 66.7 | 18 | 13:11:28.56+12.48 s | 13:11:35.21+19.13 s | 6.65 |
| DOUDourbes | 81.3 | 275 | 13:11:30.51+14.43 s | 13:11:39.21+23.13 s | 8.70 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 82.1 | 10 | 13:11:31.24+15.16 s | 13:11:39.65+23.57 s | 8.41 |