MONTIGNY-LE-TILLEUL (BE)
Quarry blast30 June 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 12:46:292022-06-30
- UTC
- 10:46:292022-06-30
Main parameters
| Date and time | 2022-06-30 10:46:29 UTC 2022-06-30 12:46:29 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.395° N, 4.369° E Uncertainty ± 4.2 km |
| Event ID | ROB 16515 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-07-01 11:34:20 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
- 3.0 – 128.3km
- Mean velocity, P wave
- 5.4km/s
- Mean velocity, S wave
- 3.0km/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 0.39 s. S wave: 4 measurements, root-mean-square deviation 0.34 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 | |||||
| TMLTMontigny-le-Tilleul | 3.0 | 182 | – | 10:46:29.65+0.19 s | – |
| SNFSeneffe | 14.3 | 335 | 10:46:31.64+2.18 s | 10:46:34.34+4.88 s | 2.70 |
| TGATangissart | 25.8 | 25 | 10:46:34.57+5.11 s | 10:46:37.63+8.17 s | 3.06 |
| MRDMaredsous | 30.2 | 110 | 10:46:34.42+4.96 s | – | – |
| DOUDourbes | 37.0 | 154 | 10:46:35.73+6.27 s | 10:46:41.23+11.77 s | 5.50 |
| KLBKalborn | 128.3 | 104 | 10:46:52.38+22.92 s | 10:47:01.92+32.46 s | 9.54 |