BRAINE-LE-COMTE (BE)
Quarry blast22 June 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 14:04:052022-06-22
- UTC
- 12:04:052022-06-22
Main parameters
| Date and time | 2022-06-22 12:04:05 UTC 2022-06-22 14:04:05 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.591° N, 4.098° E Uncertainty ± 1.7 km |
| Event ID | ROB 16450 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-23 10:45:19 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
- 8
- Epicentral distance
- 6.5 – 140.4km
- Mean velocity, P wave
- 5.8km/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: 7 measurements, root-mean-square deviation 0.26 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)8 stations | |||||
| SKQSteenkerque | 6.5 | 349 | 12:04:06.50+1.21 s | 12:04:07.62+2.33 s | 1.12 |
| RQRRonquières | 9.2 | 80 | 12:04:07.15+1.86 s | – | – |
| SNFSeneffe | 15.9 | 124 | 12:04:08.15+2.86 s | – | – |
| TGATangissart | 30.1 | 87 | 12:04:10.49+5.20 s | – | – |
| DOUDourbes | 65.6 | 147 | 12:04:17.37+12.08 s | 12:04:24.89+19.60 s | 7.52 |
| GESGesves | 73.9 | 108 | 12:04:18.24+12.95 s | – | – |
| CLAClavier | 87.6 | 102 | 12:04:20.32+15.03 s | – | – |
| MRGMont Rigi | 140.4 | 93 | 12:04:29.49+24.20 s | – | – |