BRAINE-LE-COMTE (BE)
Quarry blast3 March 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:04:552022-03-03
- UTC
- 13:04:552022-03-03
Main parameters
| Date and time | 2022-03-03 13:04:55 UTC 2022-03-03 14:04:55 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.589° N, 4.102° E Uncertainty ± 1.0 km |
| Event ID | ROB 15560 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-03-08 09:16:02 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
- 6.8 – 65.2km
- Mean velocity, P wave
- 6.1km/s
- Mean velocity, S wave
- 3.3km/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 0.13 s. S wave: 4 measurements, root-mean-square deviation 0.26 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)6 stations | |||||
| SKQSteenkerque | 6.8 | 347 | 13:04:56.54+1.22 s | 13:04:57.82+2.50 s | 1.28 |
| RQRRonquières | 8.9 | 78 | 13:04:57.17+1.85 s | – | – |
| BRQBracquegnies | 12.3 | 169 | 13:04:57.73+2.41 s | – | – |
| SNFSeneffe | 15.6 | 124 | 13:04:58.33+3.01 s | 13:05:00.90+5.58 s | 2.57 |
| TGATangissart | 29.8 | 86 | 13:05:00.49+5.17 s | 13:05:04.53+9.21 s | 4.04 |
| DOUDourbes | 65.2 | 147 | 13:05:06.46+11.14 s | 13:05:15.49+20.17 s | 9.03 |