BRAINE-LE-COMTE (BE)
Quarry blast16 February 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 13:10:402022-02-16
- UTC
- 12:10:402022-02-16
Main parameters
| Date and time | 2022-02-16 12:10:40 UTC 2022-02-16 13:10:40 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.608° N, 4.142° E Uncertainty ± 1.1 km |
| Event ID | ROB 15485 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-02-18 09:55:18 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
- 7
- Epicentral distance
- 5.9 – 65.6km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.4km/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 0.23 s. S wave: 4 measurements, root-mean-square deviation 0.38 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)7 stations | |||||
| RQRRonquières | 5.9 | 93 | 12:10:41.87+1.55 s | – | – |
| SKQSteenkerque | 6.3 | 316 | 12:10:41.59+1.27 s | – | – |
| BRQBracquegnies | 14.2 | 182 | 12:10:42.77+2.45 s | – | – |
| SNFSeneffe | 14.8 | 137 | 12:10:42.76+2.44 s | 12:10:45.56+5.24 s | 2.80 |
| TGATangissart | 26.9 | 91 | 12:10:44.99+4.67 s | 12:10:48.60+8.28 s | 3.61 |
| MRDMaredsous | 56.0 | 127 | 12:10:50.31+9.99 s | 12:10:57.60+17.28 s | 7.29 |
| DOUDourbes | 65.6 | 150 | 12:10:51.87+11.55 s | 12:10:59.71+19.39 s | 7.84 |