BRAINE-LE-COMTE (BE)
Quarry blast23 June 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 16:03:092022-06-23
- UTC
- 14:03:092022-06-23
Main parameters
| Date and time | 2022-06-23 14:03:09 UTC 2022-06-23 16:03:09 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.596° N, 4.109° E Uncertainty ± 2.0 km |
| Event ID | ROB 16480 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-24 11:20:29 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
- 6.3 – 152.6km
- Mean velocity, P wave
- 5.6km/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: 6 measurements, root-mean-square deviation 0.18 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 | 6.3 | 341 | 14:03:10.55+1.11 s | 14:03:11.70+2.26 s | 1.15 |
| RQRRonquières | 8.3 | 82 | 14:03:11.24+1.80 s | – | – |
| SNFSeneffe | 15.6 | 127 | 14:03:12.09+2.65 s | – | – |
| TGATangissart | 29.2 | 88 | 14:03:14.56+5.12 s | – | – |
| MRDMaredsous | 57.1 | 125 | 14:03:19.53+10.09 s | 14:03:26.43+16.99 s | 6.90 |
| DOUDourbes | 65.6 | 148 | 14:03:21.39+11.95 s | 14:03:29.00+19.56 s | 7.61 |
| MRGMont Rigi | 139.6 | 93 | 14:03:33.63+24.19 s | – | – |
| KLBKalborn | 152.6 | 110 | 14:03:35.65+26.21 s | 14:03:53.77+44.33 s | 18.12 |