BRAINE-LE-COMTE (BE)
Quarry blast19 May 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 12:20:312022-05-19
- UTC
- 10:20:312022-05-19
Main parameters
| Date and time | 2022-05-19 10:20:31 UTC 2022-05-19 12:20:31 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.580° N, 4.132° E Uncertainty ± 1.7 km |
| Event ID | ROB 16215 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-05-20 16:04:32 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
- 9
- Epicentral distance
- 7.2 – 63.2km
- Mean velocity, P wave
- 5.7km/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: 9 measurements, root-mean-square deviation 0.45 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)9 stations | |||||
| RQRRonquières | 7.2 | 66 | 10:20:33.28+1.77 s | – | – |
| SKQSteenkerque | 8.5 | 334 | 10:20:32.36+0.85 s | 10:20:37.70+6.19 s | 5.34 |
| BRQBracquegnies | 11.0 | 179 | 10:20:33.57+2.06 s | – | – |
| SNFSeneffe | 13.2 | 125 | 10:20:34.52+3.01 s | – | – |
| LESLessines | 25.1 | 306 | 10:20:36.36+4.85 s | – | – |
| TGATangissart | 27.8 | 84 | 10:20:36.73+5.22 s | – | – |
| UCCBUccle | 29.0 | 34 | 10:20:36.92+5.41 s | 10:20:40.21+8.70 s | 3.29 |
| MRDMaredsous | 54.7 | 124 | 10:20:41.90+10.39 s | – | – |
| DOUDourbes | 63.2 | 148 | 10:20:42.22+10.71 s | 10:20:48.92+17.41 s | 6.70 |
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